Export Python Interface for external memory. (#7070)

* Add Python iterator interface. * Add tests. * Add demo. * Add documents. * Handle empty dataset.
2021-07-22 15:15:53 +08:00
parent e64ee6592f
commit e6088366df
34 changed files with 961 additions and 200 deletions
--- a/src/tree/updater_colmaker.cc
+++ b/src/tree/updater_colmaker.cc
@@ -444,7 +444,7 @@ class ColMaker: public TreeUpdater {
    }

    // update the solution candidate
-    virtual void UpdateSolution(const SparsePage &batch,
+    virtual void UpdateSolution(const SortedCSCPage &batch,
                                const std::vector<bst_feature_t> &feat_set,
                                const std::vector<GradientPair> &gpair,
                                DMatrix*) {