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Updated Recent Changes with updates for Nunes and Novikov
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jessica0xdata committed Mar 21, 2015
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#Noether Release (2.8.4.1) - 1/30/15
# Nunes Release (2.8.6.2) - 3/16/15

####Enhancements
(*includes changes from Novikov release [2.8.5.3] - 3/7/15)

####New Features
These changes represent features that have been added since the previous release:

- Create mechanism to move VMs between Hypervisor [(HEX-1965)](https://0xdata.atlassian.net/browse/HEX-1965)


####Enhancements

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

#####Algorithms
- Enforce `min_rows` input parameter for leaf nodes in tree builder [(github)](https://github.com/h2oai/h2o/commit/ff6b7f024e642acf05a8e34d0bb8fcd900644a4c)
- Enable variable importances for autoencoder [(github)](https://github.com/h2oai/h2o/commit/4f392e8afcd61083c3e553a044480ff5853e5ad6)
- GLM coefficient constraints [(HEX-1961)](https://0xdata.atlassian.net/browse/HEX-1961)
- added grid search across all relevant parameters that might be affected by beta constraints [(github)](https://github.com/h2oai/h2o/commit/c481f40dd422d7fdca3959b355af789168d93b0f)
- added stricter threshold in checkmodel, and added higher accuracy by default [(github)](https://github.com/h2oai/h2o/commit/f17c7ee41f239596e2f67fd7e3d5d268bff6f397)
- Added proximal penalty to objective value used in line search [(github)](https://github.com/h2oai/h2o/commit/d8605e76f4566dc5fbe33bd9c61c37efbbe76904)
- try different setting for importance [(github)](https://github.com/h2oai/h2o/commit/cfbcf3479fca79111f5c4a2ef86b421ba8e01f79)
- add some tolerance [(github)](https://github.com/h2oai/h2o/commit/c3f6ce942010b7f4613aa32340edae2a5e42b86c)
- Write trees to individual files for easier debugging [(github)](https://github.com/h2oai/h2o/commit/9ba0e12332115857d296a9b3042a03d9bf6f303a)

#####API
- Add h2o.setMaxLastValue() [(github)](https://github.com/h2oai/h2o/commit/c4f64c4682f02293a0d7ecca46e8c49619cef9d0)
- adding as.numeric mehtod to R package [(github)](https://github.com/h2oai/h2o/commit/67f4295a86e4fd4e656a85c83001566f34b2cae3)

#####System
- add UUID field to generated POJOs in h2o1 [(HEX-2014)](https://0xdata.atlassian.net/browse/HEX-2014) [(github)](https://github.com/h2oai/h2o/commit/903f229eae8df9f7781edbada530fbc5d28c2e54)
- allow column type setting [(HEX-1291)](https://0xdata.atlassian.net/browse/HEX-1291)
- Need a way to set a specific level on a factor col [(PUB-1153)](https://0xdata.atlassian.net/browse/PUB-1153)[(github)](https://github.com/h2oai/h2o/commit/69515ebe5915f6266a840ca0914d36bfd9bfed98)
- Bind both TCP and UDP ports before clustering [(github)](https://github.com/h2oai/h2o/commit/b9fd80f339cf7727142d6a3a71a9651f2ea1845f)
- Removes all GA messages [(github)](https://github.com/h2oai/h2o/commit/7e6c7c98693b55b3fa1999bf59e1725a963fc686)


####Bug Fixes
These changes are to resolve incorrect software behavior:

#####Algorithms
- GLM : the proximal penalty was not being added to the objective value used during line-search, which would cause line search to stop the solver prematurely. [(HEX-2028)](https://0xdata.atlassian.net/browse/HEX-2028)
- GLM : With some Bayesian priors, the coeff estimates are off from our expectation: [(HEX-2026)](https://0xdata.atlassian.net/browse/HEX-2026)
- GLM : Modeling with constraints delivers unexpected results [(HEX-2025)](https://0xdata.atlassian.net/browse/HEX-2025)
- GLM in R: h2o.glm with Beta Constraints overwrites input training frame [(HEX-2021)](https://0xdata.atlassian.net/browse/HEX-2021)
- GLM: linear regression fails to run with beta constraints [(HEX-2020)](https://0xdata.atlassian.net/browse/HEX-2020) [(github)](https://github.com/h2oai/h2o/commit/a4fedfd0d61756b051afd3c5261322ff50ff0952)
- java.lang.ArrayIndexOutOfBoundsException while running GBM [(HEX-2011)](https://0xdata.atlassian.net/browse/HEX-2011)
- i pass "do_classification: True" parameter to ModelBuilders/gbm. no error. but it's not echoed and the result is regression [(PUB-1134)](https://0xdata.atlassian.net/browse/PUB-1134)
- Fixed proximal interface in glm [(github)](https://github.com/h2oai/h2o/commit/3562bd7091b457e94ee8e975034eae8ed92b495d)
- GLM bug fix [(github)](https://github.com/h2oai/h2o/commit/b28566e8d2d415e8c3cc57d3d4a78adb53c319a8)
- Bug fix in glm to protect against (throw IAE) user supplying beta_given but no vector of penalties in the beta_constraints [(github)](https://github.com/h2oai/h2o/commit/8e0e38300d5bdd9b293f3872b799502619d216aa)
- fixed LR beta constraints, took out beta given since no rho is given [(github)](https://github.com/h2oai/h2o/commit/7fab0264492b383de5f36008f608f6f7ad8ddbb9)
- Fix in GLM [(github)](https://github.com/h2oai/h2o/commit/5617c6e95885dd3dd2d30bb3bf7cfd6d2e0aec8d)



#####API
- as.h2o() broken, cannot import date column into h2o [(HEX-2027)](https://0xdata.atlassian.net/browse/HEX-2027) [(github)](https://github.com/h2oai/h2o/commit/c27f9a3c152f3c17c4fbfb6e7fb16534779488d5)
- R: as.numeric missing from R package [(HEX-2024)](https://0xdata.atlassian.net/browse/HEX-2024)
- Fix bug in as.h2o. h2o.exec call (for turning cols into enums) was somehow overwriting h2odataset object in outer scope. [(github)](https://github.com/h2oai/h2o/commit/b63c42b6838b630a5e9ad042737c4d00b61597b0)


#####System

- handle GA not able to call home gracefully [(HEX-2030)](https://0xdata.atlassian.net/browse/HEX-2030)
- Rapids apply: java.lang.AssertionError at water.fvec.Frame.<init>(Frame.java:100) at water.fvec.Frame.<init>(Frame.java:72) at water.rapids.ASTApply.apply(ASTApply.java:63) at water.rapids.AST.treeWalk(AST.java:50) [(PUB-1145)](https://0xdata.atlassian.net/browse/PUB-1145)
- NPE in fvec parse on 164 on multiple gz files [(PUB-441)](https://0xdata.atlassian.net/browse/PUB-441)
-



#Noether Release (2.8.4.1) - 1/30/15

####Enhancements

#####UI

- Java POJO scoring implemented for unsupervised models (especially DL Autoencoder) [(PUB-1118)](https://0xdata.atlassian.net/browse/PUB-1118)
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####Bug Fixes

These changes are to resolve incorrect software behavior:

#####UI
- Fixed a bug in an example due to createFrame change [(github)](https://github.com/h2oai/h2o/commit/afc93a9734ea22efa9afcec46bbc7e26b2faee98)
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