Method CopyTreeRange

catboost/libs/model/model.h:1231–1238

* Truncate model to contain only trees from [begin; end) interval. * @param begin * @param end * @return model copy that contains only needed trees */

     * @return model copy that contains only needed trees
     */
    TFullModel CopyTreeRange(size_t begin, size_t end) const {
        TFullModel result = *this;
        if (CtrProvider) {
            result.CtrProvider = CtrProvider->Clone();
        }
        result.Truncate(begin, end);
        return result;
    }

    /**
     * Evaluate indexes of leafs at which object are mapped by trees from interval [treeStart, treeEnd).