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xgboost/tests/cpp/linear/test_linear.cc
Rory Mitchell 088bb4b27c Prevent multiclass Hessian approaching 0 (#3304) 
* Prevent Hessian in multiclass objective becoming zero

* Set default learning rate to 0.5 for "coord_descent" linear updater
2018-05-09 20:25:51 +12:00

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