H2o

Download at: <a href='http://h2o-release.s3.amazonaws.com/h2o/rel-3.44.0/3/index.html'>http://h2o-release.s3.amazonaws.com/h2o/rel-3.44.0/3/index.html</a>

Bug Fix
- [[15958]](https://github.com/h2oai/h2o-3/issues/15958) - Fixed maximum likelihood dispersion estimation for GLM tweedie family producing the wrong result for a specific dataset.
- [[15936]](https://github.com/h2oai/h2o-3/issues/15936) - Added data frame transformations using polars since datatable cannot be installed on Python 3.10+.
- [[15894]](https://github.com/h2oai/h2o-3/issues/15894) - Ensured that the functions that are supposed to be exported in the R package are exported.
- [[15891]](https://github.com/h2oai/h2o-3/issues/15891) - Corrected sign in AIC calculation to fix problem with tweedie dispersion parameter estimation, AIC, and loglikelihood.
- [[15887]](https://github.com/h2oai/h2o-3/issues/15887) - Allowed Python H2OFrame constructor to accept an existing H2OFrame.
- [[6725]](https://github.com/h2oai/h2o-3/issues/6725) - Fixed LoggerFactory slf4j related regression.

Improvement
- [[15937]](https://github.com/h2oai/h2o-3/issues/15937) - Exposed `gainslift_bins` parameter for Deep Learning, GAM, GLM, and Stacked Ensemble algorithms.
- [[15916]](https://github.com/h2oai/h2o-3/issues/15916) - Sped up computation of Friedman-Popescu’s H statistic.

New Feature
- [[15927]](https://github.com/h2oai/h2o-3/issues/15927) - Added anomaly score metric to be used as a `sort_by` metric when sorting grid model performances for Isolation Forest with grid search.
- [[15780]](https://github.com/h2oai/h2o-3/issues/15780) - Added `weak_learner_params` parameter for AdaBoost.
- [[15779]](https://github.com/h2oai/h2o-3/issues/15779) - Added `weak_learner="deep_learning"` option for AdaBoost.
- [[7118]](https://github.com/h2oai/h2o-3/issues/7118) - Implemented scoring and scoring history for Extended Isolation Forest by adding `score_each_iteration` and `score_tree_interval`.

Docs
- [[15817]](https://github.com/h2oai/h2o-3/issues/15817) - Improved default threshold API and documentation for binomial classification.

Security
- [[15754]](https://github.com/h2oai/h2o-3/issues/15754) - Addressed CVE-2022-21230 by replacing nanohttpd.

Download at: <a href='http://h2o-release.s3.amazonaws.com/h2o/rel-3.44.0/2/index.html'>http://h2o-release.s3.amazonaws.com/h2o/rel-3.44.0/2/index.html</a>

Bug Fix
- [[15906]](https://github.com/h2oai/h2o-3/issues/15906) - Fixed `learning_curve_plot` for CoxPH with specified metric = 'loglik'.
- [[15889]](https://github.com/h2oai/h2o-3/issues/15889) - Fixed inability to call `thresholds_and_metric_scores()` with binomial models and metrics.
- [[15861]](https://github.com/h2oai/h2o-3/issues/15861) - Fixed the warning message that caused `as_data_frame` to fail due to not having datatable installed.
- [[15860]](https://github.com/h2oai/h2o-3/issues/15860) - Fixed `force_col_type` not working with `skipped_columns` when parsing parquet files.
- [[15832]](https://github.com/h2oai/h2o-3/issues/15832) - Fixed UpliftDRF MOJO API and updated the documentation.
- [[15761]](https://github.com/h2oai/h2o-3/issues/15761) - Fixed `relevel_by_frequency` resetting the values of the column.

Improvement
- [[15893]](https://github.com/h2oai/h2o-3/issues/15893) - Renamed the `data` parameter of the `partial_plot` function to `frame`.

Docs
- [[15881]](https://github.com/h2oai/h2o-3/issues/15881) - Added security note that Kubernetes images don’t apply security settings by default.
- [[15851]](https://github.com/h2oai/h2o-3/issues/15851) - Added the 3.44 major release blog to the user guide.
- [[15842]](https://github.com/h2oai/h2o-3/issues/15842) - Introduced *Known Bug* section to the release notes.
- [[15840]](https://github.com/h2oai/h2o-3/issues/15840) - Fixed the release notes UI not loading by making them smaller by putting all release notes prior to 3.28.0.1 into a separate file.
- [[6570]](https://github.com/h2oai/h2o-3/issues/6570) - Added information on the Friedman and Popescu H Statistic to XGBoost and GBM.

Security
- [[15865]](https://github.com/h2oai/h2o-3/issues/15865) - Upgraded org.python.jython to CWE-416 of com.github.jnr:jnr-posix.

Download at: <a href='http://h2o-release.s3.amazonaws.com/h2o/rel-3.44.0/1/index.html'>http://h2o-release.s3.amazonaws.com/h2o/rel-3.44.0/1/index.html</a>


Bug Fix
- [[15743]](https://github.com/h2oai/h2o-3/issues/15743) - Fixed`shap_summary_plot` for H2O Explainability Interface failing when one column was full of zeroes or NaN values.
- [[15669]](https://github.com/h2oai/h2o-3/issues/15669) - Fixed R package to ensure it downloads the fixed version of H2O.
- [[15651]](https://github.com/h2oai/h2o-3/issues/15651) - Upgraded the minimal supported version of `ggplot2` to 3.3.0 to remove the deprecated dot-dot notation.

Improvement
- [[15801]](https://github.com/h2oai/h2o-3/issues/15801) - Updated Friedman and Popescu’s H statistic calculation to include missing values support.
- [[15741]](https://github.com/h2oai/h2o-3/issues/15741) - Implemented ability for force column types during parsing.
- [[15713]](https://github.com/h2oai/h2o-3/issues/15713) - Improved the default threshold API for binomial classification.
- [[15582]](https://github.com/h2oai/h2o-3/issues/15582) - Renamed prediction table header for UpliftDRF to be more user-friendly.
- [[12678]](https://github.com/h2oai/h2o-3/issues/12678) - Added check to `mojo_predict_df` to look for a valid R dataframe.
- [[7079]](https://github.com/h2oai/h2o-3/issues/7079) - Added verbosity to H2O initialization. `h2oconn.clust.show_status()` is now guarded and will only be shown when `verbose=True` during initialization.
- [[6768]](https://github.com/h2oai/h2o-3/issues/6768) - Enabled categorical features for single decision tree.

New Feature
- [[15773]](https://github.com/h2oai/h2o-3/issues/15773) - Implemented `make_metrics` with custom AUUC thresholds for UpliftDRF.
- [[15565]](https://github.com/h2oai/h2o-3/issues/15565) - Implemented custom metric for AutoML.
- [[15559]](https://github.com/h2oai/h2o-3/issues/15559) - Implemented custom metric for Stacked Ensemble.
- [[15556]](https://github.com/h2oai/h2o-3/issues/15556) - Implemented MOJO support for UpliftDRF.
- [[15535]](https://github.com/h2oai/h2o-3/issues/15535) - Implemented Python 3.10 and 3.11 support.
- [[6784]](https://github.com/h2oai/h2o-3/issues/6784) - Implemented custom metric for Deep Learning.
- [[6783]](https://github.com/h2oai/h2o-3/issues/6783) - Implemented custom metric functionalities and the ATE, ATT, and ATC metrics for UpliftDRF.
- [[6779]](https://github.com/h2oai/h2o-3/issues/6779) - Implemented custom metric for leaderboard.
- [[6723]](https://github.com/h2oai/h2o-3/issues/6723) - Implemented new AdaBoost algorithm for binary classification.
- [[6698]](https://github.com/h2oai/h2o-3/issues/6698) - Implemented Shapley values support for ensemble models.

Security
- [[15815]](https://github.com/h2oai/h2o-3/issues/15815) - Addressed CVE-2023-36478 by upgrading Jetty server.
- [[15805]](https://github.com/h2oai/h2o-3/issues/15805) - Addressed CVE-2023-42503 by upgrading commons-compress to 1.24.0 in Standalone Jars.
- [[15802]](https://github.com/h2oai/h2o-3/issues/15802) - Addressed CVE-2023-39410 by upgrading org.apache.avro:avro to 1.11.3.
- [[15799]](https://github.com/h2oai/h2o-3/issues/15799) - Addressed CVE-2023-43642 by upgrading snappy-java in Standalone Jars to 1.1.10.5.
- [[15759]](https://github.com/h2oai/h2o-3/issues/15759) - Addressed CVE-202-13949, CVE-2019-0205, CVE-2018-1320, and CVE-2018-11798 by excluding org.apache.thrift:libthrift from dependencies of Main Standalone Jar.
- [[15757]](https://github.com/h2oai/h2o-3/issues/15757) - Addressed CVE-2020-29582 and CVE-2022-24329 by upgrading org.jetbrains.kotlin:kotlin-stdlib to 1.6.21 in Main and Steam Standalone Jars.
- [[15755]](https://github.com/h2oai/h2o-3/issues/15755) - Addressed CVE-2023-3635 by upgrading com.squareup.okio:okio to 3.5.0 in Main and Steam Standalone Jars.
- [[15752]](https://github.com/h2oai/h2o-3/issues/15752) - Addressed CVE-2023-34455, CVE-2023-34454, and CVE-2023-34453 by upgrading snappy-java to 1.1.10.3 in Main and Steam Standalone Jars.
- [[15750]](https://github.com/h2oai/h2o-3/issues/15750) - Addressed CVE-2023-1370 by upgrading json-smart to 2.4.10 in Main standalone Jar.
- [[15746]](https://github.com/h2oai/h2o-3/issues/15746) - Addressed CVE-2023-1436, CVE-2022-40149, CVE-2022-40150, CVE-2022-45685, and CVE-2022-45693 by upgrading org.codehaus.jettison:jettison to 1.5.4 in Main Standalone Jar.
- [[15744]](https://github.com/h2oai/h2o-3/issues/15744) - Addressed CVE-2017-12197 by upgrading libpam4j to 1.11.
- [[15706]](https://github.com/h2oai/h2o-3/issues/15706) - Addressed CVE-2023-40167 and CVE-2023-36479 by upgrading the Jetty server.
- [[15470]](https://github.com/h2oai/h2o-3/issues/15470) - Upgraded Hadoop Libraries in Main Standalone Jar to address high and critical vulnerabilities.

*Known Bug*
*(The list of bugs introduced by the changes in this release)*

- [[15832]](https://github.com/h2oai/h2o-3/issues/15832) - Broken Python and R API for UpliftDRF MOJO models. *Resolved in 3.44.0.2.*

Download at: <a href='http://h2o-release.s3.amazonaws.com/h2o/rel-3.42.0/4/index.html'>http://h2o-release.s3.amazonaws.com/h2o/rel-3.42.0/4/index.html</a>

Bug Fix
- [[15729]](https://github.com/h2oai/h2o-3/issues/15729) - Implemented multi-thread `as_data_frame` by using Datatable to speedup the conversion process.
- [[15643]](https://github.com/h2oai/h2o-3/issues/15643) - Fixed validation of `include_explanation` and `exclude_explanation` parameters

Improvement
- [[15719]](https://github.com/h2oai/h2o-3/issues/15719) - Implemented warnings in python and R for accessing `model.negative_log_likelihood()`
- [[13859]](https://github.com/h2oai/h2o-3/issues/13859) - Improved K-Means testing.

New Feature
- [[15727]](https://github.com/h2oai/h2o-3/issues/15727) - Implemented new `write_checksum` parameter that allows you to disable default Hadoop Parquet writer systematically writing a `.crc` checksum file for each written data file.

Security
- [[15766]](https://github.com/h2oai/h2o-3/issues/15766) - Addressed CVE-2023-40167 and CVE-2023-36479 in Steam Jar

Download at: <a href='http://h2o-release.s3.amazonaws.com/h2o/rel-3.42.0/3/index.html'>http://h2o-release.s3.amazonaws.com/h2o/rel-3.42.0/3/index.html</a>

Bug Fix
- [[15679]](https://github.com/h2oai/h2o-3/issues/15679) - Fixed GBM invalid tree index feature interaction.
- [[15666]](https://github.com/h2oai/h2o-3/issues/15666) - Updated test to showcase GBM checkpointing.
- [[6605]](https://github.com/h2oai/h2o-3/issues/6605) - Fixed `h2o.feature_interaction` failing on cross-validation models with early stopping.

Improvement
- [[6707]](https://github.com/h2oai/h2o-3/issues/6707) - Added extended message to `h2o.init()` to help users get around version mismatch error.

Docs
- [[15694]](https://github.com/h2oai/h2o-3/issues/15694) - Added `custom_metric_func` and `upload_custom_metric` to GLM.
- [[15680]](https://github.com/h2oai/h2o-3/issues/15680) - Added security installation disclaimer in documentation and on the download page.
- [[15598]](https://github.com/h2oai/h2o-3/issues/15598) - Updated `import_file` description and added Google Storage support note.

Security
- [[15687]](https://github.com/h2oai/h2o-3/issues/15687) - Replaced dependencies on no.priv.garshol.duke:duke:1.2 by extracting string comparators from Duke library.

Download at: <a href='http://h2o-release.s3.amazonaws.com/h2o/rel-3.42.0/2/index.html'>http://h2o-release.s3.amazonaws.com/h2o/rel-3.42.0/2/index.html</a>

Bug Fix
- [[15637]](https://github.com/h2oai/h2o-3/issues/15637) - Fixed AUCPR plot assigning incorrect values to the variable recalls and precisions.
- [[6545]](https://github.com/h2oai/h2o-3/issues/6545) - Fixed out of memory error on multi-node sorting stage or sorted frame generation process.

New Feature
- [[15614]](https://github.com/h2oai/h2o-3/issues/15614) - Enabled H2OFrame to pandas DataFrame using multi-thread from datatable to speed-up the conversion process.
- [[15597]](https://github.com/h2oai/h2o-3/issues/15597) - Added support for EMR 6.10.

Engineering Task
- [[15626]](https://github.com/h2oai/h2o-3/issues/15626) - Updated Jira links in H2O Flow UI with GH issue links.

Docs
- [[15629]](https://github.com/h2oai/h2o-3/issues/15629) - Fixed typo on Hadoop introduction page.
- [[15606]](https://github.com/h2oai/h2o-3/issues/15606) - Updated major release blog for user guide.
- [[15580]](https://github.com/h2oai/h2o-3/issues/15580) - Added information on UniformRobust method for `histogram_type` and created an accompanying blog post.
- [[15563]](https://github.com/h2oai/h2o-3/issues/15563) - Updated out of date copyright year in user guide and python guide.
- [[6574]](https://github.com/h2oai/h2o-3/issues/6574) - Added a warning to Infogram user guide that it should not be used to remove correlated columns.
- [[6554]](https://github.com/h2oai/h2o-3/issues/6554) - Updated `nfolds` parameter description for AutoML in Python guide.

Security
- [[15634]](https://github.com/h2oai/h2o-3/issues/15634) - Addressed CVE-2019-10086 by upgrading MOJO2 lib.