5 Commits

Author	SHA1	Message	Date
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
Rory Mitchell	a185ddfe03	Implement GPU accelerated coordinate descent algorithm (#3178) ... * Implement GPU accelerated coordinate descent algorithm. * Exclude external memory tests for GPU	2018-04-20 14:56:35 +12:00
Rory Mitchell	ccf80703ef	Clang-tidy static analysis (#3222) ... * Clang-tidy static analysis * Modernise checks * Google coding standard checks * Identifier renaming according to Google style	2018-04-19 18:57:13 +12:00
Vadim Khotilovich	706be4e5d4	Additional improvements for gblinear (#3134) ... * fix rebase conflict * [core] additional gblinear improvements * [R] callback for gblinear coefficients history * force eta=1 for gblinear python tests * add top_k to GreedyFeatureSelector * set eta=1 in shotgun test * [core] fix SparsePage processing in gblinear; col-wise multithreading in greedy updater * set sorted flag within TryInitColData * gblinear tests: use scale, add external memory test * fix multiclass for greedy updater * fix whitespace * fix typo	2018-03-13 01:27:13 -05:00
Rory Mitchell	10eb05a63a	Refactor linear modelling and add new coordinate descent updater (#3103) ... * Refactor linear modelling and add new coordinate descent updater * Allow unsorted column iterator * Add prediction cacheing to gblinear	2018-02-17 09:17:01 +13:00