xwei-datageek/spark — pull request #2 by BaiGang (2014-06-30 10:39:06+00:00)
Title: LBFGS optimier and new test cases for Poisson and Gamma regression

* Add LBFGS optimizer to both Poisson and Gamma regression models.
* Add real-world data set to the test suites.
* Modify the ``generatePoissonInput()’’ method in test suite to generate multi-dimensional test data.