h2oai/h2o-3

#Recent Changes

##H2O-Dev

###Severi (0.2.2.15) - 4/25/15

####New Features The following features have been added since the last release:

#####Python

added min, max, sum, median for H2OVecs and respective pyunit (github)
added min(), max(), and sum() functionality on H2OFrames and respective pyunits (github)

#####Web UI

View POJO in Flow (PUBDEV-781)
help > about page or add version on main page for easy bug reporting. (PUBDEV-804)
POJO generation: GLM (PUBDEV-712) (github)
GLM model output, details in Flow (HEXDEV-96)

####Enhancements The following changes are improvements to existing features (which includes changed default values):

#####Algorithms

K means output clean up (HEXDEV-187)
Add FNR/TNR/FPR/TPR to threshold tables, remove recall, specificity (github)
Add accessor for variable importances for DL (github)
Relax CM error tolerance for F1-optimal threshold now that AUC2 doesn't necessarily create consistent thresholds with its own CMs. (github)
Added scoring history to glm (github)
Added model summary to glm (github)
Add flag to support reading data from S3N (github)
Added degrees of freedom to GLM metrics schemas (github)
Allow DL scoring_history to be unlimited in length (github)
add plotting for binomial models (github)
Ignore certain parameters that are not applicable (class balancing, max CM size, etc.) (github)
Updated glm scoring, fill training/validation metrics in model output (github)
Rename gbm loss parameter to distribution (github)
Fix GBM naming: loss -> distribution (github)
GLM LBFGS update (github)
na.rm for quantile is default behavior (github)
GLM update: enabled max_predictors in REST, updated lbfgs (github)
Remove keep_cross_validation_splits for now from DL (github)
Get rid of sigma in the model metrics, instead show r2 (github)
Don't show score_every_iteration for DL (github)
Don't print too large confusion matrices in Tree models (github)

#####API

publish h2o-model.jar via REST API (PUBDEV-779)
move all schemas and endpoints to v3 (PUBDEV-471)
clean up routes (remove AddToNavbar, fix /Quantiles, etc) (PUBDEV-618) (github)
More data in chunk_homes call. Add num_chunks_per_vec. Add num_vec. (github)
Added chunk_homes route for frames (github)
Update to use /3 routes (github)

#####Python

Python client should check that version number == server version number (PUBDEV-799)
Add asfactor for month (github)
in Expr.show() only show 10 or less rows. remove locate from runit test because full path used (github)
change nulls to () (github)
sigma is no longer part of ModelMetricsRegressionV3 (github)

#####R

Fix integer -> int in R (github)
add autoencoder show method (github)
accessor is $ not @ (github)
add hit_ratio_table and varimp calls to R (github)
add h2o.predict as alternative (github)
update model output in R (github)

#####System

Port MissingValueInserter EndPoint to h2o-dev. (PUBDEV-465)
Rapids: require a (put "key" %frame) (PUBDEV-868)
Need pojo base model jar file embedded in h2o-dev via build process (PUBDEV-780) (github)
Make .json the default (PUBDEV-619) (github)
Rename class for clarification (github)
Classifies all NA columns as numeric. Also improves preview sampling accuracy by trimming partial lines at end of chunk. (github)
Implements sampling of files within the ParseSetup preview. This prevents poor column type guesses from only sampling the beginning of a file. (github).
Rename fields drop_na20_col (github)
allow for many deletes as final statements in a block (github)
rename initF -> init_f, dropNA20Cols -> drop_na20_cols (github)
Removed tweedie param (github)
thresholds -> threshold (github)
JSON of TwoDimTable with all null values in the first column (no row headers) now doesn't have an empty column for of "" or nulls. (github)
move H2O_Load, fix all the timezone functions (github)
Add extra verbose printout in case Frames don't match identically (github)
allow delayed column lookup (github)
add mixed type list (github)
Added WaterMeterIo to count persist info (github)
Remove special setChunkSize code in HDFS and NFS file vec (github)
add check for Frame on string parse (github)
Disable Memory Cleaner (github)
Handle '<' chars in Keys when swapping (github)
allow for colnames in slicing (github)
Adjusts parse type detection. If column is all one string value, declare it an enum (github)

#####Web UI

nice algo names in the Flow dropdown (full word names) (PUBDEV-707)
Compute and Display Hit Ratios (PUBDEV-630)
Limit POJO preview to 1000 lines (github)

####Bug Fixes

The following changes are to resolve incorrect software behavior:

#####Algorithms

GLM: lasso i.e alpha =1 seems to be giving wrong answers (PUBDEV-769)
AUC: h2o reports .5 auc when actual auc is 1 (PUBDEV-879)
h2o.glm: No output displayed for the model (PUBDEV-858)
h2o.glm model object output needs a fix (PUBDEV-815)
h2o.glm model object says : fill me in GLMModelOutputV2; I think I'm redundant [1] FALSE (PUBDEV-765)
GLM : Build GLM Model => Java Assertion error (PUBDEV-686)
GLM :=> Progress shows -100% (PUBDEV-861)
GBM: Negative sign missing in initF value for ad dataset (PUBDEV-880)
K-Means takes a validation set but doesn't use it (PUBDEV-826)
Absolute_MCC is NaN (sometimes) (PUBDEV-848) (github)
GBM: A proper error msg should be thrown when the user sets the max depth =0 (PUBDEV-838) (github)
DRF Regression Assertion Error (PUBDEV-824)
h2o.randomForest: if h2o is not returning the mse for the 0th tree then it should not be reported in the model object (PUBDEV-811)
GBM: Got exception class java.lang.AssertionError with msg null java.lang.AssertionError at hex.tree.gbm.GBM$GBMDriver$GammaPass.map (PUBDEV-693)
GBM: Got exception class java.lang.AssertionError with msg null java.lang.AssertionError at hex.ModelMetricsMultinomial$MetricBuildMultinomial.perRow (HEXDEV-248)
GBM get java.lang.AssertionError: Coldata 2199.0 out of range C17:5086.0-19733.0 step=57.214844 nbins=256 isInt=1 (HEXDEV-241)
GLM: glmnet objective function better than h2o.glm (PUBDEV-749)
GLM: get AIOOB:-36 at hex.glm.GLMTask$GLMIterationTask.postGlobal(GLMTask.java:733) (PUBDEV-894) (github)
Fixed glm behavior in case no rows are left after filtering out NAs (github)
Fix memory leak in validation scoring in K-Means (github)

#####API

API unification: DataFrame should be able to accept URI referencing file on local filesystem (PUBDEV-709) (github)

#####Python

Python: describe returning all zeros (PUBDEV-875)
python/R & merge() (PUBDEV-834)
python Expr min, max, median, sum bug (PUBDEV-845) (github)

#####R

(R and Python) clients must not pass response to DL AutoEncoder model builder (PUBDEV-897) (github)
h2o.varimp, h2o.hit_ratio_table missing in R (PUBDEV-842)
GLM: No help for h2o.glm from R (PUBDEV-732)
h2o.confusionMatrix not working for binary response (PUBDEV-782) (github)
h2o.splitframe complains about destination keys (PUBDEV-783)
h2o.assign does not work (PUBDEV-784) (github)
H2oR: should display only first few entries of the variable importance in model object (PUBDEV-850)
R: h2o.confusion matrix needs formatting (PUBDEV-764)
R: h2o.confusionMatrix => No Confusion Matrices for H2ORegressionMetrics (PUBDEV-710)
h2o.deeplearning: model object output needs a fix (PUBDEV-821)
h2o.varimp, h2o.hit_ratio_table missing in R (PUBDEV-842)
force gc more frequently (github)

#####System

MapR FS loads are too slow (PUBDEV-927)
ensure that HDFS works from Windows (PUBDEV-812)
Summary: on a time column throws,'null' is not an object (evaluating 'column.domain[level.index]') in Flow (PUBDEV-867)
Parse: An enum column gets parsed as int for the attached file (PUBDEV-606)
Parse => 40Mx1_uniques => class java.lang.RuntimeException (PUBDEV-729)
if there are fewer than 5 unique values in a dataset column, mins/maxs reports e+308 values (PUBDEV-150) (github)
Sparkling water - DataFrame[T_UUID] to SchemaRDD[StringType] (PUDEV-771)
Sparkling water - DataFrame[T_NUM(Long)] to SchemaRDD[LongType] (PUBDEV-767)
Sparkling water - DataFrame[T_ENUM] to SchemaRDD[StringType] (PUBDEV-766)
Inconsistency in row and col slicing (HEXDEV-265) (github)
rep_len expects literal length only (HEXDEV-268) (github)
cbind and = don't work within a single rapids block (HEXDEV-237)
Rapids response for c(value) does not have frame key (HEXDEV-252)
S3 parse takes forever (PUBDEV-876)
Parse => Enum unification fails in multi-node parse (PUBDEV-718) (github)
All nodes are not getting updated with latest status of each other nodes info (PUBDEV-768)
Cluster creation is sometimes rejecting new nodes (post jenkins-master-1128+) (PUBDEV-807)
Parse => Multiple files 1 zip/ 1 csv gives Array index out of bounds (PUBDEV-840)
Parse => failed for X5MRows6KCols ==> OOM => Cluster dies (PUBDEV-836)
/frame/foo pagination weirded out (HEXDEV-277) (github)
Removed code that flipped enums to strings (github)

#####Web UI

Flow: It would be really useful to have the mse plots back in GBM (PUBDEV-889)
State change in Flow is not fully validated (PUBDEV-919)
Flows : Not able to load saved flows from hdfs (PUBDEV-872)
Save Function in Flow crashes (PUBDEV-791) (github)
Flow: should throw a proper error msg when user supplied response have more categories than algo can handle (PUBDEV-866)
Flow display of a summary of a column with all missing values fails. (HEXDEV-230)
Split frame UI improvements (HEXDEV-275)
Flow : Decimal point precisions to be consistent to 4 as in h2o1 (PUBDEV-844)
Flow: Prediction frame is outputing junk info (PUBDEV-825)
EC2 => Cluster of 16 nodes => Water Meter => shows blank page (PUBDEV-831)
Flow: Predict - "undefined is not an object (evaluating prediction.thresholds_and_metric_scores.name) (PUBDEV-559)
Flow: inspect getModel for PCA returns error (PUBDEV-610)
Flow, RF: Can't get Predict results; "undefined is not an object (evaluating prediction.confusion_matrices.length)" (PUBDEV-695)
Flow, GBM: getModel is broken -Error processing GET /3/Models.json/gbm-b1641e2dc3-4bad-9f69-a5f4b67051ba null is not an object (evaluating source.length) (PUBDEV-800)

###Severi (0.2.2.1) - 4/10/15

####New Features

#####R

Implement /3/Frames/<my_frame>/summary (PUBDEV-6) (github)
add allparameters slot to allow default values to be shown (github)
add log loss accessor (github)

####Enhancements

#####Algorithms

POJO generation: GBM (PUBDEV-713)
POJO generation: DRF (PUBDEV-714)
Compute and Display Hit Ratios (PUBDEV-630) (github)
Add DL POJO scoring (PUBDEV-585)
Allow validation dataset for AutoEncoder (PUDEV-581)
PUBDEV-580: Add log loss to binomial and multinomial model metric (github)
Port MissingValueInserter EndPoint to h2o-dev (PUBDEV-465)
increase tolerance to 2e-3 (was 1e-3 ..failed with 0.001647 relative difference (github)
change tolerance to 1e-3 (github)
Add option to export weights and biases to REST API / Flow. (github)
Add scree plot for H2O PCA models and fix Runit test. (github)
Remove quantiles from the model builders list. (github)
GLM update: added row filtering argument to line search task, fixed issues with dfork/asyncExec (github)
Updated rho-setting in GLM. (github)
No threshold 0.5; use the default (max F1) instead (github)
GLM update: updated initilization, NA row filtering, default lambda is now empty, will be picked based on the fraction of lambda_max. (github)
Updated ADMM solver. (github)
Added makeGLMModel call. (github)
Start with classification error NaN at t=0 for DL, not with 1. (github)
Relax DL POJO relative tolerance to 1e-2. (github)
Override nfeatures() method in DLModelOutput. (github)
Renaming of fields in GLM (github)
GLM: Take out Balance Classes (PUBDEV-795)

#####API

schema metadata for Map fields should include the key and value types (PUBDEV-753) (github)
schema metadata should include the superclass (PUBDEV-754)
rest api naming convention: n_folds vs ntrees (PUBDEV-737)
schema metadata for Map fields should include the key and value types (PUBDEV-753)
Create REST Endpoint for exposing .java pojo models (PUBDEV-778)

#####Python

Run GLM from Python (including LBFGS) (HEXDEV-92)
added H2OFrame show(), as_list(), and slicing pyunits (github)
changed solver parameter to "L_BFGS" (github)
added multidimensional slicing of H2OFrames and Exprs. (github)
add h2o.groupby to python interface (github)
added H2OModel.confusionMatrix() to return confusion matrix of a prediction (github)

#####R

PUBDEV-578, PUBDEV-541, PUBDEV-566. -R client now sends the data frame column names and data types to ParseSetup. -R client can get column names from a parsed frame or a list. -Respects client request for column data types (github)
R: Cannot create new columns through R (PUBDEV-571)
H2O-R: it would be more useful if h2o.confusion matrix reports the actual class labels instead of [,1] and [,2] (PUBDEV-553)
Support both multinomial and binomial CM (github)

#####System

Flow: Standardize max_iters/max_iterations parameters (PUBDEV-447) (github)
Add ERROR logging level for too-many-retries case (PUBDEV-146) (github)
Simplify checking of cluster health. Just report the status immediately. (github)
reduce timeout (github)
strings can have ' or " beginning (github)
Throw a validation error in flow if any training data cols are non-numeric (github)
Add getHdfsHomeDirectory(). (github)
Added --verbose. (github)

#####Web UI

PUBDEV-707: nice algo names in the Flow dropdown (full word names) (github)
Unbreak Flow's ConfusionMatrix display. (github)
POJO generation: DL (PUBDEV-715)

####Bug Fixes

#####Algorithms

GLM : Build GLM model with nfolds brings down the cloud => FATAL: unimplemented (PUBDEV-731) (github)
DL : Build DL Model => FATAL: unimplemented: n_folds >= 2 is not (yet) implemented => SHUTSDOWN CLOUD (PUBDEV-727) (github)
GBM => Build GBM model => No enum constant hex.tree.gbm.GBMModel.GBMParameters.Family.AUTO (PUBDEV-723)
GBM: When run with loss = auto with a numeric column get- error :No enum constant hex.tree.gbm.GBMModel.GBMParameters.Family.AUTO (PUBDEV-708) (github)
gbm: does not complain when min_row >dataset size (PUBDEV-694) (github)
GLM: reports wrong residual degrees of freedom (PUBDEV-668)
H2O dev reports less accurate aucs than H2O (PUBDEV-602)
GLM : Build GLM model fails => ArrayIndexOutOfBoundsException (PUBDEV-601)
divide by zero in modelmetrics for deep learning (PUBDEV-568)
GBM: reports 0th tree mse value for the validation set, different than the train set ,When only train sets is provided (PUDEV-561)
GBM: Initial mse in bernoulli seems to be off (PUBDEV-515)
GLM : Build Model fails with Array Index Out of Bound exception (PUBDEV-454) (github)
Custom Functions don't work in apply() in R (PUBDEV-436)
GLM failure: got NaNs and/or Infs in beta on airlines (PUBDEV-362)
MetricBuilderMultinomial.perRow AssertionError while running GBM (HEXDEV-240)
Problems during Train/Test adaptation between Enum/Numeric (HEXDEV-229)
DRF/GBM balance_classes=True throws unimplemented exception (HEXDEV-226) (github)
AUC reported on training data is 0, but should be 1 (HEXDEV-223) (github)
glm pyunit intermittent failure (HEXDEV-199)
Inconsistency in GBM results:Gives different results even when run with the same set of params (HEXDEV-194)
get rid of nfolds= param since it's not supported in GLM yet (github)
Fixed degrees of freedom (off by 1) in glm, added test. (github)
GLM fix: fix filtering of rows with NAs and fix in sparse handling. (github)
Fix GLM job fail path to call Job.fail(). (github)
Full AUC computation, bug fixes (github)
Fix ADMM for upper/lower bounds. (updated rho settings + update u-vector in ADMM for intercept) (github)
Few glm fixes (github)
DL : KDD Algebra data set => Build DL model => ArrayIndexOutOfBoundsException (PUBDEV-696)
GBm: Dev vs H2O for depth 5, minrow=10, on prostate, give different trees (PUBDEV-759)
GBM param min_rows doesn't throw exception for negative values (PUBDEV-697)
GBM : Build GBM Model => Too many levels in response column! (java.lang.IllegalArgumentException) => Should display proper error message (PUBDEV-698)
GBM:Got exception 'class java.lang.AssertionError', with msg 'Something is wrong with GBM trees since returned prediction is Infinity (PUBDEV-722)

#####API

Cannot adapt numeric response to factors made from numbers (PUBDEV-620)
not specifying response_column gets NPE (deep learning build_model()) I think other algos might have same thing (PUBDEV-131)
NPE response has null msg, exception_msg and dev_msg (HEXDEV-225)
Flow :=> Save Flow => On Mac and Windows 8.1 => NodePersistentStorage failure while attempting to overwrite (?) a flow (HEXDEV-202) (github)
the can_build field in ModelBuilderSchema needs values[] to be set (PUBDEV-755)
value field in the field metadata isn't getting serialized as its native type (PUBDEV-756)

#####Python

python api asfactor() on -1/1 column issue (HEXDEV-203)

#####R

Rapids: Operations %/% and %% returns Illegal Argument Exception in R (PUBDEV-736)
quantile: H2oR displays wrong quantile values when call the default quantile without specifying the probs (PUBDEV-689)(github)
as.factor: If a user reruns as.factor on an already factor column, h2o should not show an exception (PUBDEV-622)
as.factor works only on positive integers (PUBDEV-617) (github)
H2O-R: model detail lists three mses, the first MSE slot does not contain any info about the model and hence, should be removed from the model details (PUBDEV-605) (github)
H2O-R: Strings: While slicing get Error From H2O: water.DException$DistributedException (PUBDEV-592)
R: h2o.confusionMatrix should handle both models and model metric objects (PUBDEV-590)
R: as.Date not functional with H2O objects (PUBDEV-583) (github)
R: some apply functions don't work on H2OFrame objects (PUBDEV-579) (github)
h2o.confusionMatrices for multinomial does not work (PUBDEV-577)
R: slicing issues (PUBDEV-573)
R: length and is.factor don't work in h2o.ddply (PUBDEV-572) (github)
R: apply(hex, c(1,2), ...) doesn't properly raise an error (PUBDEV-570) (github)
R: Slicing negative indices to negative indices fails (PUBDEV-569) (github)
h2o.ddply: doesn't accept anonymous functions (PUBDEV-567) (github)
ifelse() cannot return H2OFrames in R (PUBDEV-543)
as.h2o loses track of headers (PUBDEV-541)
H2O-R not showing meaningful error msg (PUBDEV-502)
H2O.fail() had better fail (PUBDEV-470) (github)
fix issue in toEnum (github)
fix colnames and new col creation (github)
R: h2o.init() is posting warning messages of an unhealthy cluster when the cluster is fine. (PUBDEV-734)
h2o.split frame is failing (PUBDEV-560)

#####System

key type failure should fail the request, not the cloud (PUBDEV-739) (github)
Parse => Import Medicare supplier file => Parse = > Illegal argument for field: column_names of schema: ParseV2: string and key arrays' values must be quoted, but the client sent: " (PUBDEV-719)
Overwriting a constant vector with strings fails (PUBDEV-702)
H2O - gets stuck while calculating quantile,no error msg, just keeps running a job that normally takes less than a sec (PUBDEV-685)
Summary and quantile on a column with all missing values should not throw an exception (PUBDEV-673) (github)
View Logs => class java.lang.RuntimeException: java.lang.IllegalArgumentException: File /home2/hdp/yarn/usercache/neeraja/appcache/application_1427144101512_0039/h2ologs/h2o_172.16.2.185_54321-3-info.log does not exist (PUBDEV-600)
Parse: After parsing Chicago crime dataset => Not able to build models or Get frames (PUBDEV-576)
Parse: Numbers completely parsed wrong (PUBDEV-574)
Flow: converting a column to enum while parsing does not work (PUBDEV-566)
Parse: Fail gracefully when asked to parse a zip file with different files in it (PUBDEV-540)(github)
toDataFrame doesn't support sequence format schema (array, vectorUDT) (PUBDEV-457)
Parse : Parsing random crap gives java.lang.ArrayIndexOutOfBoundsException: 13 (PUBDEV-428)
The quote stripper for column names should report when the stripped chars are not the expected quotes (PUBDEV-424)
import directory with large files,then Frames..really slow and disk grinds. Files are unparsed. Shouldn't be grinding (PUBDEV-98)
NodePersistentStorage gets wiped out when hadoop cluster is restarted (HEXDEV-185)
h2o.exec won't be supported (github)
fixed import issue (github)
fixed init param (github)
fix repeat as.factor NPE (github)
startH2O set to False in init (github)
hang on glm job removal (PUBDEV-726)
Flow - changed column types need to be reflected in parsed data (HEXDEV-189)
water.DException$DistributedException while running kmeans in multinode cluster (PUBDEV-691)
Frame inspection prior to file parsing, corrupts parsing (PUBDEV-425)

#####Web UI

Flow, DL: Need better fail message if "Autoencoder" and "use_all_factor_levels" are both selected (PUBDEV-724)
When select AUTO while building a gbm model get ERROR FETCHING INITIAL MODEL BUILDER STATE (PUBDEV-595)
Flow : Build h2o-dev-0.1.17.1009 : Building GLM model gives java.lang.ArrayIndexOutOfBoundsException: (PUBDEV-205 (github)
Flow:Summary on flow broken for a long time (PUBDEV-785)

Serre (0.2.1.1) - 3/18/15

####New Features

#####Algorithms

Naive Bayes in H2O-dev (PUBDEV-158)
GLM model output, details from R (HEXDEV-94)
Run GLM Regression from Flow (including LBFGS) (HEXDEV-110)
PCA (PUBDEV-157)
Port Random Forest to h2o-dev (PUBDEV-455)
Enable DRF model output (github)
Add DRF to Flow (Model Output) (PUBDEV-533)
Grid for GBM (github)
Run Deep Learning Regression from Flow (HEXDEV-109)

#####Python

Add Python wrapper for DRF (PUBDEV-534)

#####R

Add R wrapper for DRF (PUBDEV-530)

#####System

Include uploadFile (PUBDEV-299) (github)
Added -flow_dir to hadoop driver (github)

#####Web UI

Add Flow packs (HEXDEV-190) (PUBDEV-247)
Integrate H2O Help inside Help panel (PUBDEV-108) (github)
Add quick toggle button to show/hide the sidebar (github)
Add New, Open toolbar buttons (github)
Auto-refresh data preview when parse setup input parameters are changed (PUBDEV-532)
Flow: Add playbar with Run, Continue, Pause, Progress controls (HEXDEV-192)
You can now stop/cancel a running flow

####Enhancements

#####Algorithms

Display GLM coefficients only if available (PUBDEV-466)
Add random chance line to RoC chart (HEXDEV-168)
Speed up DLSpiral test. Ignore Neurons test (MatVec) (github)
Use getRNG for Dropout (github)
PUBDEV-598: Add tests for determinism of RNGs (github)
PUBDEV-598: Implement Chi-Square test for RNGs (github)
Add DL model output toString() (github)
Add LogLoss to MultiNomial ModelMetrics (PUBDEV-580)
Print number of categorical levels once we hit >1000 input neurons. (github)
Updated the loss behavior for GBM. When loss is set to AUTO, if the response is an integer with 2 levels, then bernoullli (rather than gaussian) behavior is chosen. As a result, the do_classification flag is no longer necessary in Flow, since the loss completely specifies the desired behavior, and R users no longer to use as.factor() in their response to get the desired bernoulli behavior. The score_each_iteration flag has been removed as well. (github)
Fully remove _convert_to_enum in all algos (github)
Port MissingValueInserter EndPoint to h2o-dev. (PUBDEV-465)

#####API

Display point layer for tree vs mse plots in GBM output (PUBDEV-504)
Rename API inputs/outputs (github)
Rename Inf to Infinity (github)

#####Python

added H2OFrame.setNames(), H2OFrame.cbind(), H2OVec.cbind(), h2o.cbind(), and pyunit_cbind.py (github)
Make H2OVec.levels() return the levels (github)
H2OFrame.dim(), H2OFrame.append(), H2OVec.setName(), H2OVec.isna() additions. demo pyunit addition (github)

#####System

Customize H2O web UI port (PUBDEV-483)
Make parse setup interactive (PUBDEV-532)
Added --verbose (github)
Adds some H2OParseExceptions. Removes all H2O.fail in parse (no parse issues should cause a fail)(github)
Allows parse to specify check_headers=HAS_HEADERS, but not provide column names (github)
Port MissingValueInserter EndPoint to h2o-dev (PUBDEV-465)

#####Web UI

Add 'Clear cell' and 'Run all cells' toolbar buttons (github)
Add 'Clear cell' and 'Clear all cells' commands (PUBDEV-493) (github)
'Run' button selects next cell after running
ModelMetrics by model category: Clustering (PUBDEV-416)
ModelMetrics by model category: Regression (PUBDEV-415)
ModelMetrics by model category: Multinomial (PUBDEV-414)
ModelMetrics by model category: Binomial (PUBDEV-413)
Add ability to select and delete multiple models (github)
Add ability to select and delete multiple frames (github)
Flows now stop running when an error occurs
Print full number of mismatches during POJO comparison check. (github)
Make Grid multi-node safe (github)
Beautify the vertical axis labels for Flow charts/visualization (more) (PUBDEV-329)

####Bug Fixes

#####Algorithms

GBM only populates either MSE_train or MSE_valid but displays both (PUBDEV-350)
GBM: train error increases after hitting zero on prostate dataset (PUBDEV-513)
GBM : Variable importance displays 0's for response param => should not display response in table at all (PUBDEV-430)
GLM : R/Flow ==> Build GLM Model hangs at 4% (PUBDEV-456)
Import file from R hangs at 75% for 15M Rows/2.2 K Columns (HEXDEV-179)
Flow: GLM - 'model.output.coefficients_magnitude.name' not found, so can't view model (PUBDEV-466)
GBM predict fails without response column (PUBDEV-478)
GBM: When validation set is provided, gbm should report both mse_valid and mse_train (PUBDEV-499)
PCA Assertion Error during Model Metrics (PUBDEV-548) (github)
KMeans: Size of clusters in Model Output is different from the labels generated on the training set (PUBDEV-542) (github)
Inconsistency in GBM results:Gives different results even when run with the same set of params (HEXDEV-194)
PUBDEV-580: Fix some numerical edge cases (github)
Fix two missing float -> double conversion changes in tree scoring. (github)
Flow: HIDDEN_DROPOUT_RATIOS for DL does not show default value (PUBDEV-285)
Old GLM Parameters Missing (PUBDEV-431)
GLM: R/Flow ==> Build GLM Model hangs at 4% (PUBDEV-456)

#####API

SplitFrame on String column produce C0LChunk instead of CStrChunk (PUBDEV-468)
Error in node$h2o$node : $ operator is invalid for atomic vectors (PUBDEV-348)
Response from /ModelBuilders don't conform to standard error json shape when there are errors (HEXDEV-121) (github)

#####Python

fix python syntax error (github)
Fixes handling of None in python for a returned na_string. (github)

#####R

R : Inconsistency - Train set name with and without quotes work but Validation set name with quotes does not work (PUBDEV-491)
h2o.confusionmatrices does not work (PUBDEV-547)
How do i convert an enum column back to integer/double from R? (PUBDEV-546)
Summary in R is faulty (PUBDEV-539)
R: as.h2o should preserve R data types (PUBDEV-578)
NPE in GBM Prediction with Sliced Test Data (HEXDEV-207) (github)
Import file from R hangs at 75% for 15M Rows/2.2 K Columns (HEXDEV-179)
Custom Functions don't work in apply() in R (PUBDEV-436)
got water.DException$DistributedException and then got java.lang.RuntimeException: Categorical renumber task (HEXDEV-195)
H2O-R: as.h2o parses column name as one of the row entries (PUBDEV-591)
R-H2O Managing Memory in a loop (PUB-1125)
h2o.confusionMatrices for multinomial does not work (PUBDEV-577)
H2O-R not showing meaningful error msg

#####System

Flow: When balance class = F then flow should not show max_after_balance_size = 5 in the parameter listing (PUBDEV-503)
3 jvms, doing ModelMetrics on prostate, class water.KeySnapshot$GlobalUKeySetTask; class java.lang.AssertionError: *** Attempting to block on task (class water.TaskGetKey) with equal or lower priority. Can lead to deadlock! 122 <= 122 (PUBDEV-495)
Not able to start h2o on hadoop (PUBDEV-487)
one row (one col) dataset seems to get assertion error in parse setup request (PUBDEV-96)
Parse : Import file (move.com) => Parse => First row contains column names => column names not selected (HEXDEV-171) (github)
The NY0 parse rule, in summary. Doesn't look like it's counting the 0's as NAs like h2o (PUBDEV-154)
0 / Y / N parsing (PUBDEV-229)
NodePersistentStorage gets wiped out when laptop is restarted. (HEXDEV-167)
Building a model and making a prediction accepts invalid frame types (PUBDEV-83)
Flow : Import file 15M rows 2.2 Cols => Parse => Error fetching job on UI =>Console : ERROR: Job was not successful Exiting with nonzero exit status (HEXDEV-55)
Flow : Build GLM Model => Family tweedy => class hex.glm.LSMSolver$ADMMSolver$NonSPDMatrixException', with msg 'Matrix is not SPD, can't solve without regularization (PUBDEV-211)
Flow : Import File : File doesn't exist on all the hdfs nodes => Fails without valid message (PUBDEV-313)
Check reproducibility on multi-node vs single-node (PUBDEV-557)
Parse : After parsing Chicago crime dataset => Not able to build models or Get frames (PUBDEV-576)

#####Web UI

Flow : Build Model => Parameters => shows meta text for some params (PUBDEV-505)
Flow: K-Means - "None" option should not appear in "Init" parameters (PUBDEV-459)
Flow: PCA - "None" option appears twice in "Transform" list (HEXDEV-186)
GBM Model : Params in flow show two times (PUBDEV-440)
Flow multinomial confusion matrix visualization (HEXDEV-204)
Flow: It would be good if flow can report the actual distribution, instead of just reporting "Auto" in the model parameter listing (PUBDEV-509)
Unimplemented algos should be taken out from drop down of build model (PUBDEV-511)
[MapR] unable to give hdfs file name from Flow (PUBDEV-409)

###Selberg (0.2.0.1) - 3/6/15 ####New Features

#####Algorithms

Naive Bayes in H2O-dev (PUBDEV-158)
GLM model output, details from R (HEXDEV-94)
Run GLM Regression from Flow (including LBFGS) (HEXDEV-110)
PCA (PUBDEV-157)
Port Random Forest to h2o-dev (PUBDEV-455)
Enable DRF model output (github)
Add DRF to Flow (Model Output) (PUBDEV-533)
Grid for GBM (github)
Run Deep Learning Regression from Flow (HEXDEV-109)

#####Python

Add Python wrapper for DRF (PUBDEV-534)

#####R

Add R wrapper for DRF (PUBDEV-530)

#####System

Include uploadFile (PUBDEV-299) (github)
Added -flow_dir to hadoop driver (github)

#####Web UI

Add Flow packs (HEXDEV-190) (PUBDEV-247)
Integrate H2O Help inside Help panel (PUBDEV-108) (github)
Add quick toggle button to show/hide the sidebar (github)
Add New, Open toolbar buttons (github)
Auto-refresh data preview when parse setup input parameters are changed (PUBDEV-532) -Flow: Add playbar with Run, Continue, Pause, Progress controls (HEXDEV-192)
You can now stop/cancel a running flow

####Enhancements

The following changes are improvements to existing features (which includes changed default values):

#####Algorithms

Display GLM coefficients only if available (PUBDEV-466)
Add random chance line to RoC chart (HEXDEV-168)
Allow validation dataset for AutoEncoder (PUDEV-581)
Speed up DLSpiral test. Ignore Neurons test (MatVec) (github)
Use getRNG for Dropout (github)
PUBDEV-598: Add tests for determinism of RNGs (github)
PUBDEV-598: Implement Chi-Square test for RNGs (github)
PUBDEV-580: Add log loss to binomial and multinomial model metric (github)
Add DL model output toString() (github)
Add LogLoss to MultiNomial ModelMetrics (PUBDEV-580)
Port MissingValueInserter EndPoint to h2o-dev (PUBDEV-465)
Print number of categorical levels once we hit >1000 input neurons. (github)
Updated the loss behavior for GBM. When loss is set to AUTO, if the response is an integer with 2 levels, then bernoullli (rather than gaussian) behavior is chosen. As a result, the do_classification flag is no longer necessary in Flow, since the loss completely specifies the desired behavior, and R users no longer to use as.factor() in their response to get the desired bernoulli behavior. The score_each_iteration flag has been removed as well. (github)
Fully remove _convert_to_enum in all algos (github)
Add DL POJO scoring (PUBDEV-585)

#####API

Display point layer for tree vs mse plots in GBM output (PUBDEV-504)
Rename API inputs/outputs (github)
Rename Inf to Infinity (github)

#####Python

added H2OFrame.setNames(), H2OFrame.cbind(), H2OVec.cbind(), h2o.cbind(), and pyunit_cbind.py (github)
Make H2OVec.levels() return the levels (github)
H2OFrame.dim(), H2OFrame.append(), H2OVec.setName(), H2OVec.isna() additions. demo pyunit addition (github)

#####R

PUBDEV-578, PUBDEV-541, PUBDEV-566. -R client now sends the data frame column names and data types to ParseSetup. -R client can get column names from a parsed frame or a list. -Respects client request for column data types (github)

#####System

Customize H2O web UI port (PUBDEV-483)
Make parse setup interactive (PUBDEV-532)
Added --verbose (github)
Adds some H2OParseExceptions. Removes all H2O.fail in parse (no parse issues should cause a fail)(github)
Allows parse to specify check_headers=HAS_HEADERS, but not provide column names (github)
Port MissingValueInserter EndPoint to h2o-dev (PUBDEV-465)

#####Web UI

Add 'Clear cell' and 'Run all cells' toolbar buttons (github)
Add 'Clear cell' and 'Clear all cells' commands (PUBDEV-493) (github)
'Run' button selects next cell after running
ModelMetrics by model category: Clustering (PUBDEV-416)
ModelMetrics by model category: Regression (PUBDEV-415)
ModelMetrics by model category: Multinomial (PUBDEV-414)
ModelMetrics by model category: Binomial (PUBDEV-413)
Add ability to select and delete multiple models (github)
Add ability to select and delete multiple frames (github)
Flows now stop running when an error occurs
Print full number of mismatches during POJO comparison check. (github)
Make Grid multi-node safe (github)
Beautify the vertical axis labels for Flow charts/visualization (more) (PUBDEV-329)

####Bug Fixes The following changes are to resolve incorrect software behavior:

#####Algorithms

GBM only populates either MSE_train or MSE_valid but displays both (PUBDEV-350)
GBM: train error increases after hitting zero on prostate dataset (PUBDEV-513)
GBM : Variable importance displays 0's for response param => should not display response in table at all (PUBDEV-430)
Inconsistency in GBM results:Gives different results even when run with the same set of params (HEXDEV-194)
GLM : R/Flow ==> Build GLM Model hangs at 4% (PUBDEV-456)
Import file from R hangs at 75% for 15M Rows/2.2 K Columns (HEXDEV-179)
Flow: GLM - 'model.output.coefficients_magnitude.name' not found, so can't view model (PUBDEV-466)
GBM predict fails without response column (PUBDEV-478)
GBM: When validation set is provided, gbm should report both mse_valid and mse_train (PUBDEV-499)
PCA Assertion Error during Model Metrics (PUBDEV-548) (github)
KMeans: Size of clusters in Model Output is different from the labels generated on the training set (PUBDEV-542) (github)
Inconsistency in GBM results:Gives different results even when run with the same set of params (HEXDEV-194)
divide by zero in modelmetrics for deep learning (PUBDEV-568)
AUC reported on training data is 0, but should be 1 (HEXDEV-223) (github)
GBM: reports 0th tree mse value for the validation set, different than the train set ,When only train sets is provided (PUDEV-561)
PUBDEV-580: Fix some numerical edge cases (github)
Fix two missing float -> double conversion changes in tree scoring. (github)
Problems during Train/Test adaptation between Enum/Numeric (HEXDEV-229)
DRF/GBM balance_classes=True throws unimplemented exception (HEXDEV-226)
Flow: HIDDEN_DROPOUT_RATIOS for DL does not show default value (PUBDEV-285)
Old GLM Parameters Missing (PUBDEV-431)
GLM: R/Flow ==> Build GLM Model hangs at 4% (PUBDEV-456)
GBM: Initial mse in bernoulli seems to be off (PUBDEV-515)

#####API

SplitFrame on String column produce C0LChunk instead of CStrChunk (PUBDEV-468)
Error in node$h2o$node : $ operator is invalid for atomic vectors (PUBDEV-348)
Response from /ModelBuilders don't conform to standard error json shape when there are errors (HEXDEV-121)

#####Python

fix python syntax error (github)
Fixes handling of None in python for a returned na_string. (github)

#####R

R : Inconsistency - Train set name with and without quotes work but Validation set name with quotes does not work (PUBDEV-491)
h2o.confusionmatrices does not work (PUBDEV-547)
How do i convert an enum column back to integer/double from R? (PUBDEV-546)
Summary in R is faulty (PUBDEV-539)
Custom Functions don't work in apply() in R (PUBDEV-436)
R: as.h2o should preserve R data types (PUBDEV-578)
as.h2o loses track of headers (PUBDEV-541)
NPE in GBM Prediction with Sliced Test Data (HEXDEV-207) (github)
Import file from R hangs at 75% for 15M Rows/2.2 K Columns (HEXDEV-179)
Custom Functions don't work in apply() in R (PUBDEV-436)
got water.DException$DistributedException and then got java.lang.RuntimeException: Categorical renumber task (HEXDEV-195)
h2o.confusionMatrices for multinomial does not work (PUBDEV-577)
R: h2o.confusionMatrix should handle both models and model metric objects (PUBDEV-590)
H2O-R: as.h2o parses column name as one of the row entries (PUBDEV-591)

#####System

Flow: When balance class = F then flow should not show max_after_balance_size = 5 in the parameter listing (PUBDEV-503)
3 jvms, doing ModelMetrics on prostate, class water.KeySnapshot$GlobalUKeySetTask; class java.lang.AssertionError: *** Attempting to block on task (class water.TaskGetKey) with equal or lower priority. Can lead to deadlock! 122 <= 122 (PUBDEV-495)
Not able to start h2o on hadoop (PUBDEV-487)
one row (one col) dataset seems to get assertion error in parse setup request (PUBDEV-96)
Parse : Import file (move.com) => Parse => First row contains column names => column names not selected (HEXDEV-171) (github)
The NY0 parse rule, in summary. Doesn't look like it's counting the 0's as NAs like h2o (PUBDEV-154)
0 / Y / N parsing (PUBDEV-229)
NodePersistentStorage gets wiped out when laptop is restarted. (HEXDEV-167)
Parse : Parsing random crap gives java.lang.ArrayIndexOutOfBoundsException: 13 (PUBDEV-428)
Flow: converting a column to enum while parsing does not work (PUBDEV-566)
Parse: Numbers completely parsed wrong (PUBDEV-574)
NodePersistentStorage gets wiped out when hadoop cluster is restarted (HEXDEV-185)
Parse: Fail gracefully when asked to parse a zip file with different files in it (PUBDEV-540)(github)
Building a model and making a prediction accepts invalid frame types (PUBDEV-83)
Flow : Import file 15M rows 2.2 Cols => Parse => Error fetching job on UI =>Console : ERROR: Job was not successful Exiting with nonzero exit status (HEXDEV-55)
Flow : Build GLM Model => Family tweedy => class hex.glm.LSMSolver$ADMMSolver$NonSPDMatrixException', with msg 'Matrix is not SPD, can't solve without regularization (PUBDEV-211)
Flow : Import File : File doesn't exist on all the hdfs nodes => Fails without valid message (PUBDEV-313)
Check reproducibility on multi-node vs single-node (PUBDEV-557)
Parse: After parsing Chicago crime dataset => Not able to build models or Get frames (PUBDEV-576)

#####Web UI

Flow : Build Model => Parameters => shows meta text for some params (PUBDEV-505)
Flow: K-Means - "None" option should not appear in "Init" parameters (PUBDEV-459)
Flow: PCA - "None" option appears twice in "Transform" list (HEXDEV-186)
GBM Model : Params in flow show two times (PUBDEV-440)
Flow multinomial confusion matrix visualization (HEXDEV-204)
Flow: It would be good if flow can report the actual distribution, instead of just reporting "Auto" in the model parameter listing (PUBDEV-509)
Unimplemented algos should be taken out from drop down of build model (PUBDEV-511)
[MapR] unable to give hdfs file name from Flow (PUBDEV-409)

###Selberg (0.2.0.1) - 3/6/15 ####New Features

#####Web UI

Flow: Delete functionality to be available for import files, jobs, models, frames (PUBDEV-241)
Implement "Download Flow" (PUBDEV-407)
Flow: Implement "Run All Cells" (PUBDEV-110)

#####API

Create python package (PUBDEV-181)
as.h2o in Python (HEXDEV-72)

#####System

Add a README.txt to the hadoop zip files (github)
Build a cdh5.2 version of h2o (github)

####Enhancements

#####Web UI

Flow: Job view should have info on start and end time (PUBDEV-267)
Flow: Implement 'File > Open' (PUBDEV-408)
Display IP address in ADMIN -> Cluster Status (HEXDEV-159)
Flow: Display alternate UI for splitFrames() (PUBDEV-399)

#####Algorithms

Added K-Means scoring (github)
Flow: Implement model output for Deep Learning (PUBDEV-118)
Flow: Implement model output for GLM (PUBDEV-120)
Deep Learning model output (HEXDEV-89, Flow),(HEXDEV-88, Python),(HEXDEV-87, R)
Run GLM Binomial from Flow (including LBFGS) (HEXDEV-90)
Flow: Display confusion matrices for multinomial models (PUBDEV-397)
During PCA, missing values in training data will be replaced with column mean (github)
Update parameters for best model scan (github)
Change Quantiles to match h2o-1; both Quantiles and Rollups now have the same default percentiles (github)
Massive cleanup and removal of old PCA, replacing with quadratically regularized PCA based on alternating minimization algorithm in GLRM (github)
Add model run time to DL Model Output (github)
Don't gather Neurons/Weights/Biases statistics (github)
Only store best model if override_with_best_model is enabled (github)
beta_eps added, passing tests changed (github)
For GLM, default values for max_iters parameter were changed from 1000 to 50.
For quantiles, probabilities are displayed.
Run Deep Learning Multinomial from Flow (HEXDEV-108)

#####API

Expose DL weights/biases to clients via REST call (PUBDEV-344)
Flow: Implement notification bar/API (PUBDEV-359)
Variable importance data in REST output for GLM (PUBDEV-359)
Add extra DL parameters to R API (average_activation, sparsity_beta, max_categorical_features, reproducible) (github)
Update GLRM API model output (github)
h2o.anomaly missing in R (PUBDEV-434)
No method to get enum levels (PUBDEV-432)

#####System

Improve memory footprint with latest version of h2o-dev (github)
For now, let model.delete() of DL delete its best models too. This allows R code to not leak when only calling h2o.rm() on the main model. (github)
Bind both TCP and UDP ports before clustering (github)
Round summary row#. Helps with pctiles for very small row counts. Add a test to check for getting close to the 50% percentile on small rows. (github)
Increase Max Value size in DKV to 256MB (github)
Flow: make parseRaw() do both import and parse in sequence (HEXDEV-184)
Remove notion of individual job/job tracking from Flow (PUBDEV-449)
Capability to name prediction results Frame in flow (PUBDEV-233)

####Bug Fixes

#####Algorithms

GLM binomial prediction failing (PUBDEV-403)
DL: Predict with auto encoder enabled gives Error processing error (PUBDEV-433)
balance_classes in Deep Learning intermittent poor result (PUBDEV-437)
Flow: Building GLM model fails (PUBDEV-186)
summary returning incorrect 0.5 quantile for 5 row dataset (PUBDEV-95)
GBM missing variable importance and balance-classes (PUBDEV-309)
H2O Dev GBM first tree differs from H2O 1 (PUBDEV-421)
get glm model from flow fails to find coefficient name field (PUBDEV-394)
GBM/GLM build model fails on Hadoop after building 100% => Failed to find schema for version: 3 and type: GBMModel (PUBDEV-378)
Parsing KDD wrong (PUBDEV-393)
GLM AIOOBE (PUBDEV-199)
Flow : Build GLM Model with family poisson => java.lang.ArrayIndexOutOfBoundsException: 1 at hex.glm.GLM$GLMLambdaTask.needLineSearch(GLM.java:359) (PUBDEV-210)
Flow : GLM Model Error => Enum conversion only works on small integers (PUBDEV-365)
GLM binary response, do_classfication=FALSE, family=binomial, prediction error (PUBDEV-339)
Epsilon missing from GLM parameters (PUBDEV-354)
GLM NPE (PUBDEV-395)
Flow: GLM bug (or incorrect output) (PUBDEV-252)
GLM binomial prediction failing (PUBDEV-403)
GLM binomial on benign.csv gets assertion error in predict (PUBDEV-132)
current summary default_pctiles doesn't have 0.001 and 0.999 like h2o1 (PUBDEV-94)
Flow: Build GBM/DL Model: java.lang.IllegalArgumentException: Enum conversion only works on integer columns (PUBDEV-213) (github)
ModelMetrics on cup98VAL_z dataset has response with many nulls (PUBDEV-214)
GBM : Predict model category output/inspect parameters shows as Regression when model is built with do classification enabled (PUBDEV-441)
Fix double-precision DRF bugs (github)

#####System

Null columnTypes for /smalldata/arcene/arcene_train.data (PUBDEV-406) (github)
Flow: Waiting for -1 responses after starting h2o on hadoop cluster of 5 nodes (PUBDEV-419)
Parse: airlines_all.csv => Airtime type shows as ENUM instead of Integer (PUBDEV-426) (github)
Flow: Typo - "Time" option displays twice in column header type menu in Parse (PUBDEV-446)
Duplicate validation messages in k-means output (PUBDEV-305) (github)
Fixes Parse so that it returns to supplying generic column names when no column names exist (github)
Flow: Import File: File doesn't exist on all the hdfs nodes => Fails without valid message (PUBDEV-313)
Flow: Parse => 1m.svm hangs at 42% (HEXDEV-174)
Prediction NFE (PUBDEV-308)
NPE doing Frame to key before it's fully parsed (PUBDEV-79)
h2o_master_DEV_gradle_build_J8 #351 hangs for past 17 hrs (PUBDEV-239)
Sparkling water - container exited due to unavailable port (PUBDEV-357)

#####API

Flow: Splitframe => java.lang.ArrayIndexOutOfBoundsException (PUBDEV-410) (github)
Incorrect dest.type, description in /CreateFrame jobs (PUBDEV-404)
space in windows filename on python (PUBDEV-444) (github)
Python end-to-end data science example 1 runs correctly (PUBDEV-182)
3/NodePersistentStorage.json/foo/id should throw 404 instead of 500 for 'not-found' (HEXDEV-163)
POST /3/NodePersistentStorage.json should handle Content-Type:multipart/form-data (HEXDEV-165)
by class water.KeySnapshot$GlobalUKeySetTask; class java.lang.AssertionError: *** Attempting to block on task (class water.TaskGetKey) with equal or lower priority. Can lead to deadlock! 122 <= 122 (PUBDEV-92)
Sparkling water : val train:DataFrame = prostateRDD => Fails with ArrayIndexOutOfBoundsException (PUBDEV-392)
Flow : getModels produces error: Error calling GET /3/Models.json (PUBDEV-254)
Flow : Splitframe => java.lang.ArrayIndexOutOfBoundsException (PUBDEV-410)
ddply 'Could not find the operator' (HEXDEV-162) (github)
h2o.table AIOOBE during NewChunk creation (HEXDEV-161) (github)
Fix warning in h2o.ddply when supplying multiple grouping columns (github)

###0.1.26.1051 - 2/13/15

####New Features

Flow: Display alternate UI for splitFrames() (PUBDEV-399)

####Enhancements

#####System

Embedded H2O config can now provide flat file (needed for Hadoop) (github)
Don't logging GET of individual jobs to avoid filling up the logs (github)

#####Algorithms

Increase GBM/DRF factor binning back to historical levels. Had been capped accidentally at nbins (typically 20), was intended to support a much higher cap. (github)
Tweaked rho heuristic in glm (github)
Enable variable importances for autoencoders (github)
Removed group_split option from GBM
Flow: display varimp for GBM output (PUBDEV-398)
variable importance for GBM (github)
GLM in H2O-Dev may provide slightly different coefficient values when applying an L1 penalty in comparison with H2O1.

####Bug Fixes

#####Algorithms

Fixed bug in GLM exception handling causing GLM jobs to hang (github)
Fixed a bug in kmeans input parameter schema where init was always being set to Furthest (github)
Fixed mean computation in GLM (github)
Fixed kmeans.R (github)
Flow: Building GBM model fails with Error executing javascript (PUBDEV-396)

#####System

DataFrame propagates absolute path to parser (github)
Fix flow shutdown bug (github)

###0.1.26.1032 - 2/6/15

####New Features

#####General Improvements

better model output
support for Python client
support for Maven
support for Sparkling Water
support for REST API schema
support for Hadoop CDH5 (github)

#####UI

Display summary visualizations by default in column summary output cells (PUBDEV-337)
Display AUC curve by default in binomial prediction output cells (PUBDEV-338)
Flow: Implement About H2O/Flow with version information (PUBDEV-111)
Add UI for CreateFrame (PUBDEV-218)
Flow: Add ability to cancel running jobs (PUBDEV-373)
Flow: warn when user navigates away while having unsaved content (PUBDEV-322)

#####Algorithms

Implement splitFrame() in Flow (PUBDEV-356)
Variable importance graph in Flow for GLM (PUBDEV-360)
Flow: Implement model building form init and validation (PUBDEV-102)
Added a shuffle-and-split-frame function; Use it to build a saner model on time-series data (github)
Added binomial model metrics (github)
Run KMeans from R (HEXDEV-105)
Be able to create a new GLM model from an existing one with updated coefficients (HEXDEV-48)
Run KMeans from Python (HEXDEV-106)
Run Deep Learning Binomial from Flow (HEXDEV-83)
Run KMeans from Flow (HEXDEV-104)
Run Deep Learning from Python (HEXDEV-85)
Run Deep Learning from R (HEXDEV-84)
Run Deep Learning Multinomial from Flow (HEXDEV-108)
Run Deep Learning Regression from Flow (HEXDEV-109)

#####API

Flow: added REST API documentation to the web ui (PUBDEV-60)
Flow: Implement visualization API (PUBDEV-114)

#####System

Dataset inspection from Flow (HEXDEV-66)
Basic data munging (Rapids) from R (HEXDEV-70)
Implement stack operator/stacking in Lightning (HEXDEV-128)

####Enhancements

#####UI

Added better message when h2o.init() not yet called (No active connection to an H2O cluster. Try calling "h2o.init()") (github)

#####Algorithms

Updated column-based gradient task to use sparse interface (github)
Updated LBFGS (added progress monitor interface, updated some default params), added progress and job support to GLM lbfgs (github)
Added pretty print (github)
Added AutoEncoder to R model categories (github)
Added Coefficients table to GLM model (github)
Updated glm lbfgs to allow for efficient lambda-search (l2 penalty only) (github)
Removed splitframe shuffle parameter (github)
Simplified model builders and added deeplearning model builder (github)
Add DL model outputs to Flow (PUBDEV-372)
Flow: Deep Learning: Expert Mode (PUBDEV-284)
Flow: Display multinomial and regression DL model outputs (PUBDEV-383)
Display varimp details for DL models (PUBDEV-381)
Make binomial response "0" and "1" by default (github)
Add Coefficients table to GLM model (github)
Removed splitframe shuffle parameter (github)
Update R GBM demos to reflect new input parameter names (github)
Rename GLM variable importance to normalized coefficient magnitudes (github)

#####API

Changed key to destination_key (github)
Cleaned up REST API schema interface (github)
Changed method name, cleaned setup, added a pyunit runner (github)

#####System

Allow changing column types during parse-setup (PUBDEV-376)
Display %NAs in model builder column lists (PUBDEV-375)
Figure out how to add H2O to PyPl (PUBDEV-178)

####Bug Fixes

#####UI

Flow: Parse => 1m.svm hangs at 42% (PUBDEV-345)
cup98 Dataset has columns that prevent validation/prediction (PUBDEV-349)
Flow: predict step failed to function (PUBDEV-217)
Flow: Arrays of numbers (ex. hidden in deeplearning)require brackets (PUBDEV-303)
Flow v.0.1.26.1030: StackTrace was broken (PUBDEV-371)
Flow: Import files -> Search -> Parse these files -> null pointer exception (PUBDEV-170)
Flow: "getJobs" not working (PUBDEV-320)
Thresholds x Metrics and Max Criteria x Metrics tables were flipped in flow (HEXDEV-155)
Flow v.0.1.26.1030: StackTrace is broken (PUBDEV-348)
flow: getJobs always shows "Your H2O cloud has no jobs" (PUBDEV-243)
Flow: First and last characters deleted from ignored columns (PUBDEV-300)
Sparkling water => Flow => Menu buttons for cell do not show up (PUBDEV-294)

#####Algorithms

Flow: Build K Means model with default K value gives error "Required field k not specified" (PUBDEV-167)
Slicing out a specific data point is broken (PUBDEV-280)
Flow: SplitFrame and grep in algorithms for flow and loops back onto itself (PUBDEV-272)
Fixed the predict method (github)
Refactor ModelMetrics into a different class for Binomial (github)
/Predictions.json did not cache predictions (HEXDEV-119)
Flow, DL: Error after changing hidden layer size (PUBDEV-323)
Error in node$h2o#node: $ operator is invalid for atomic vectors (PUBDEV-348)
Fixed K-means predict (PUBDEV-321)
Flow: DL build mode fails => as it's missing adding quotes to parameter (PUBDEV-301)
Flow: Build K means model with training/validation frames => unknown error (PUBDEV-185)
Flow: Build quantile mode=> Click goes in loop (PUBDEV-188)

#####API

Sparkling Water/Flow: Failed to find version for schema (PUBDEV-367)
Cloud.json returns odd node name (PUBDEV-259)

#####System

guesser needs to send types to parse (PUBDEV-279)
Got h2o.clusterStatus function working in R. (github)
Parse: Using R => java.lang.NullPointerException (PUBDEV-380)
Flow: Jobs => click on destination key => unimplemented: Unexpected val class for Inspect: class water.fvec.DataFrame (PUBDEV-363)
Column assignment in R exposes NullPointerException in Rollup (PUBDEV-155)
import from hdfs doesn't add files (PUBDEV-260)
AssertionError: ERROR: got tcp resend with existing in-progress task (PUBDEV-219)
HDFS parse fails when H2O launched on Spark CDH5 (PUBDEV-138)
Flow: Parse failure => java.lang.ArrayIndexOutOfBoundsException (PUBDEV-296)
"predict" step is not working in flow (PUBDEV-202)
Flow: Frame finishes parsing but comes up as null in flow (PUBDEV-270)
scala >flightsToORD.first() fails with "not serializable result" (PUBDEV-304)
DL throws NPE for bad column names (PUBDEV-15)
Flow: Build model: Not able to build KMeans/Deep Learning model (PUBDEV-297)
Flow: Col summary for NA/Y cols breaks (PUBDEV-325)
Sparkling Water : util.SparkUncaughtExceptionHandler: Uncaught exception in thread Thread NanoHTTPD Session,9,main (PUBDEV-346)
toDataFrame doesn't support sequence format schema (array, vectorUDT) (PUBDEV-457)

###0.1.20.1019 - 1/19/15

####New Features

#####UI

Added various documentation links to the build page (github)

#####Algorithms

Ported matrix multiply over and connected it to rapids (github)

####Enhancements

#####UI

Allow user to specify (the log of) the number of rows per chunk for a new constant chunk; use this new function in CreateFrame (github)
Make CreateFrame non-blocking, now displays progress bar in Flow (github)
Add row and column count to H2OFrame show method (github)
Admin watermeter page (PUBDEV-234)
Admin stack trace (PUBDEV-228)
Admin profile (PUBDEV-227)
Flow: Add download logs in UI (PUBDEV-204)
Need shutdown, minimally like h2o (PUBDEV-74)

#####API

Changed 2 to 3 for JSON requests (github)
Rename some more fields per consistency (max_iters changed to max_iterations, _iters to _iterations, _ncats to _categorical_column_count, _centersraw to centers_raw, _avgwithinss to avg_within_ss, _withinmse to within_mse) (github)
Changed K-Means output parameters (withinmse to within_mse, avgss to avg_ss, avgbetweenss to avg_between_ss) (github)
Remove default field values from DeepLearning parameters schema, since they come from the backing class (github)
Add @API help annotation strings to JSON model output (PUBDEV-216)

#####Algorithms

Minor fix in rapids matrix multiplicaton (github)
Updated sparse chunk to cut off binary search for prefix/suffix zeros (github)
Updated L_BFGS for GLM - warm-start solutions during lambda search, correctly pass current lambda value, added column-based gradient task (github)
Fix model parameters' default values in the metadata (github)
Set default value of k = number of clusters to 1 for K-Means (PUBDEV-251)

#####System

Reject any training data with non-numeric values from KMeans model building (github)

####Bug Fixes

#####API

Fixed isSparse call for constant chunks (github)
Fixed sparse interface of constant chunks (no nonzero if const 1= 0) (github)

#####System

Typeahead for folder contents apparently requires trailing "/" (github)
Fix build and instructions for R install.packages() style of installation; Note we only support source installs now (github)
Fixed R test runner h2o package install issue that caused it to fail to install on dev builds (github)

###0.1.18.1013 - 1/14/15

####New Features

#####UI

Admin timeline (PUBDEV-226)
Admin cluster status (PUBDEV-225)
Markdown cells should auto run when loading a saved Flow notebook (PUBDEV-87)
Complete About page to include info about the H2O version (PUBDEV-223)

####Enhancements

#####Algorithms

Flow: Implement model output for GBM (PUBDEV-119)

###0.1.20.1016 - 12/28/14

Added ip_port field in node json output for Cloud query (github)