1 // Copyright 2017 The TensorFlow Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 // ============================================================================= 15 #ifndef TENSORFLOW_CONTRIB_BOOSTED_TREES_LIB_LEARNER_COMMON_PARTITIONERS_EXAMPLE_PARTITIONER_H_ 16 #define TENSORFLOW_CONTRIB_BOOSTED_TREES_LIB_LEARNER_COMMON_PARTITIONERS_EXAMPLE_PARTITIONER_H_ 17 18 #include <vector> 19 #include "tensorflow/contrib/boosted_trees/lib/trees/decision_tree.h" 20 #include "tensorflow/contrib/boosted_trees/lib/utils/batch_features.h" 21 #include "tensorflow/core/lib/core/threadpool.h" 22 23 namespace tensorflow { 24 namespace boosted_trees { 25 namespace learner { 26 27 // Partitions examples based on the path through the current tree. 28 class ExamplePartitioner { 29 public: 30 // Updates partitions from previous set using the current tree structure by 31 // traversing sub-roots for each example. This method can be optionally 32 // parallelized using the passed thread pool. 33 static void UpdatePartitions(const trees::DecisionTreeConfig& tree_config, 34 const utils::BatchFeatures& features, 35 int desired_parallelism, 36 thread::ThreadPool* const thread_pool, 37 int32* example_partition_ids); 38 39 // Partitions examples using the current tree structure by traversing from 40 // root for each example. This method can be optionally parallelized using 41 // the passed thread pool. 42 static void PartitionExamples(const trees::DecisionTreeConfig& tree_config, 43 const utils::BatchFeatures& features, 44 int desired_parallelism, 45 thread::ThreadPool* const thread_pool, 46 int32* example_partition_ids); 47 }; 48 49 } // namespace learner 50 } // namespace boosted_trees 51 } // namespace tensorflow 52 53 #endif // TENSORFLOW_CONTRIB_BOOSTED_TREES_LIB_LEARNER_COMMON_PARTITIONERS_EXAMPLE_PARTITIONER_H_ 54
