Hi YiZhi, Thank you for mentioning the jira. I will add a note to the jira.
Meihua On Mon, Oct 26, 2015 at 6:16 PM, YiZhi Liu <javeli...@gmail.com> wrote: > There's an xgboost exploration jira SPARK-8547. Can it be a good start? > > 2015-10-27 7:07 GMT+08:00 DB Tsai <dbt...@dbtsai.com>: >> Also, does it support categorical feature? >> >> Sincerely, >> >> DB Tsai >> ---------------------------------------------------------- >> Web: https://www.dbtsai.com >> PGP Key ID: 0xAF08DF8D >> >> >> On Mon, Oct 26, 2015 at 4:06 PM, DB Tsai <dbt...@dbtsai.com> wrote: >>> Interesting. For feature sub-sampling, is it per-node or per-tree? Do >>> you think you can implement generic GBM and have it merged as part of >>> Spark codebase? >>> >>> Sincerely, >>> >>> DB Tsai >>> ---------------------------------------------------------- >>> Web: https://www.dbtsai.com >>> PGP Key ID: 0xAF08DF8D >>> >>> >>> On Mon, Oct 26, 2015 at 11:42 AM, Meihua Wu >>> <rotationsymmetr...@gmail.com> wrote: >>>> Hi Spark User/Dev, >>>> >>>> Inspired by the success of XGBoost, I have created a Spark package for >>>> gradient boosting tree with 2nd order approximation of arbitrary >>>> user-defined loss functions. >>>> >>>> https://github.com/rotationsymmetry/SparkXGBoost >>>> >>>> Currently linear (normal) regression, binary classification, Poisson >>>> regression are supported. You can extend with other loss function as >>>> well. >>>> >>>> L1, L2, bagging, feature sub-sampling are also employed to avoid >>>> overfitting. >>>> >>>> Thank you for testing. I am looking forward to your comments and >>>> suggestions. Bugs or improvements can be reported through GitHub. >>>> >>>> Many thanks! >>>> >>>> Meihua >>>> >>>> --------------------------------------------------------------------- >>>> To unsubscribe, e-mail: user-unsubscr...@spark.apache.org >>>> For additional commands, e-mail: user-h...@spark.apache.org >>>> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: user-unsubscr...@spark.apache.org >> For additional commands, e-mail: user-h...@spark.apache.org >> > > > > -- > Yizhi Liu > Senior Software Engineer / Data Mining > www.mvad.com, Shanghai, China --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@spark.apache.org For additional commands, e-mail: dev-h...@spark.apache.org
