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  1. 21 Mar, 2021 2 commits
    • Nikita Titov's avatar
      store all CMake files in one place (#4087) · a9d9b119
      Nikita Titov authored
      a9d9b119
    • Alberto Ferreira's avatar
      [SWIG] Add streaming data support + cpp tests (#3997) · 4ded1342
      Alberto Ferreira authored 
      * [feature] Add ChunkedArray to SWIG

* Add ChunkedArray
* Add ChunkedArray_API_extensions.i
* Add SWIG class wrappers

* Address some review comments

* Fix linting issues

* Move test to tests/test_ChunkedArray_manually.cpp

* Add test note

* Move ChunkedArray to include/LightGBM/utils/

* Declare more explicit types of ChunkedArray in the SWIG API.

* Port ChunkedArray tests to googletest

* Please C++ linter

* Address StrikerRUS' review comments

* Update SWIG doc & disable ChunkedArray<int64_t>

* Use CHECK_EQ instead of assert

* Change include order (linting)

* Rename ChunkedArray -> chunked_array files

* Change header guards

* Address last comments from StrikerRUS
      4ded1342
  3. 19 Mar, 2021 1 commit
  5. 17 Mar, 2021 1 commit
    • ashok-ponnuswami-msft's avatar
      Range check for DCG position discount lookup (#4069) · 4580393f
      ashok-ponnuswami-msft authored 
      * Add check to prevent out of index lookup in the position discount table. Add debug logging to report number of queries found in the data.

* Change debug logging location so that we can print the data file name as well.

* Revert "Change debug logging location so that we can print the data file name as well."

This reverts commit 3981b34bd6e0530f89c4733e78e6b6603bf50d48.

* Add data file name to debug logging.

* Move log line to a place where it is output even when query IDs are read from a separate file.

* Also add the out-of-range check to rank metrics.

* Perform check after number of queries is initialized.

* Update
      4580393f
  7. 16 Mar, 2021 4 commits
  9. 15 Mar, 2021 4 commits
  11. 14 Mar, 2021 1 commit
  13. 12 Mar, 2021 2 commits
  15. 11 Mar, 2021 2 commits
  17. 10 Mar, 2021 5 commits
  19. 09 Mar, 2021 2 commits
  21. 05 Mar, 2021 1 commit
  23. 04 Mar, 2021 2 commits
  25. 03 Mar, 2021 1 commit
  27. 02 Mar, 2021 2 commits
  29. 24 Feb, 2021 6 commits
  31. 23 Feb, 2021 2 commits
  33. 22 Feb, 2021 1 commit
  35. 21 Feb, 2021 1 commit
    • mjmckp's avatar
      Fix evalution of linear trees with a single leaf. (#3987) · 605c97b5
      mjmckp authored 
      

* Fix index out-of-range exception generated by BaggingHelper on small datasets.

Prior to this change, the line "score_t threshold = tmp_gradients[top_k - 1];" would generate an exception, since tmp_gradients would be empty when the cnt input value to the function is zero.

* Update goss.hpp

* Update goss.hpp

* Add API method LGBM_BoosterPredictForMats which runs prediction on a data set given as of array of pointers to rows (as opposed to existing method LGBM_BoosterPredictForMat which requires data given as contiguous array)

* Fix incorrect upstream merge

* Add link to LightGBM.NET

* Fix indenting to 2 spaces

* Dummy edit to trigger CI

* Dummy edit to trigger CI

* remove duplicate functions from merge

* Fix evalution of linear trees with a single leaf.

Note that trees without linear models at the leaf always handle num_leaves = 1 as a special case and directly output the leaf value.  Linear trees were missing this special case handling, and hence would have the following issues:
 * Calling Tree::Predict or Tree::PredictByMap would cause an access violation exception attempting to access the first value of the empty split_feature_ array in GetLeaf.
 * PredictionFunLinear would either cause an access violation or go into an infinite loop when attempting to do the equivalent of GetLeaf.

Note also that PredictionFun does not need the same changes as PredictionFunLinear, since both are only called by Tree::AddPredictionToScore, which has a special case for (!is_linear_ && num_leaves_ <= 1) that precludes calling PredictionFun.
Co-authored-by: default avatarmatthew-peacock <matthew.peacock@whiteoakam.com>
Co-authored-by: default avatarGuolin Ke <guolin.ke@outlook.com>
      605c97b5