(chibi xgboost)

(xgb-create-booster dmat [ls])

(dmatrix? obj)

(booster? obj)

(xgb-get-last-error)

(xgb-create-matrix f32vector bst_ulong bst_ulong float int)

(xgb-create-matrix/csr u64vector u32vector f32vector size_t size_t)

(xgb-create-matrix-from-file string boolean)

(xgb-matrix-num-rows DMatrixHandle)

(xgb-matrix-num-cols DMatrixHandle)

(%xgb-booster-create DMatrixHandle)

(xgb-booster-set-param! BoosterHandle string string)

(xgb-booster-update-one-iter BoosterHandle int DMatrixHandle)

(xgb-booster-eval-one-iter BoosterHandle int DMatrixHandle [const string])

(xgb-booster-boost-one-iter BoosterHandle DMatrixHandle f32vector f32vector)

(xgb-booster-predict BoosterHandle DMatrixHandle int unsigned)

(xgb-matrix-float-info DMatrixHandle string)