xwei-datageek/spark — pull request #1 by BaiGang (2014-06-30 10:25:36+00:00)
Title: LBFGS optimier and new test cases

* 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.