h2oai/h2o-3

#Recent Changes

##H2O-Dev

###0.1.26.1051 - 2/13/15

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

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

####Enhancements

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

#####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)

####Bug Fixes

These changes are to resolve incorrect software behavior:

#####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 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.
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)

###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)