mindspore-ci-bot
5 years ago
committed by
Gitee
commit
2e3d55ed87
@ -0,0 +1,85 @@
|
|||||||
|
/**
|
||||||
|
* Copyright 2019 Huawei Technologies Co., Ltd
|
||||||
|
*
|
||||||
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||||
|
* you may not use this file except in compliance with the License.
|
||||||
|
* You may obtain a copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
*
|
||||||
|
* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||||
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||||
|
* See the License for the specific language governing permissions and
|
||||||
|
* limitations under the License.
|
||||||
|
*/
|
||||||
|
#include "dataset/engine/datasetops/source/sampler/subset_sampler.h"
|
||||||
|
|
||||||
|
#include <memory>
|
||||||
|
#include <string>
|
||||||
|
|
||||||
|
#include "dataset/core/config_manager.h"
|
||||||
|
#include "dataset/core/global_context.h"
|
||||||
|
|
||||||
|
namespace mindspore {
|
||||||
|
namespace dataset {
|
||||||
|
// Constructor.
|
||||||
|
SubsetSampler::SubsetSampler(int64_t start_index, int64_t subset_size)
|
||||||
|
: Sampler(subset_size), start_index_(start_index), subset_size_(subset_size), current_id_(0) {}
|
||||||
|
|
||||||
|
Status SubsetSampler::InitSampler() {
|
||||||
|
CHECK_FAIL_RETURN_UNEXPECTED(subset_size_ > 0, "subset_size_ <= 0\n");
|
||||||
|
CHECK_FAIL_RETURN_UNEXPECTED(start_index_ >= 0, "start_index < 0\n");
|
||||||
|
CHECK_FAIL_RETURN_UNEXPECTED(start_index_ < num_rows_, "start_index >= num_rows_\n");
|
||||||
|
CHECK_FAIL_RETURN_UNEXPECTED(start_index_ + subset_size_ - 1 < num_rows_, "Final index out of bounds.\n");
|
||||||
|
|
||||||
|
num_samples_ = subset_size_;
|
||||||
|
|
||||||
|
return Status::OK();
|
||||||
|
}
|
||||||
|
|
||||||
|
Status SubsetSampler::Reset() {
|
||||||
|
current_id_ = 0;
|
||||||
|
|
||||||
|
if (HasChildSampler()) {
|
||||||
|
RETURN_IF_NOT_OK(child_[0]->Reset());
|
||||||
|
}
|
||||||
|
|
||||||
|
return Status::OK();
|
||||||
|
}
|
||||||
|
|
||||||
|
Status SubsetSampler::GetNextBuffer(std::unique_ptr<DataBuffer> *out_buffer) {
|
||||||
|
if (current_id_ > subset_size_) {
|
||||||
|
RETURN_STATUS_UNEXPECTED("SubsetSampler Internal Error");
|
||||||
|
} else if (current_id_ == subset_size_) {
|
||||||
|
(*out_buffer) = std::make_unique<DataBuffer>(0, DataBuffer::kDeBFlagEOE);
|
||||||
|
} else {
|
||||||
|
if (HasChildSampler()) {
|
||||||
|
RETURN_IF_NOT_OK(child_[0]->GetNextBuffer(&child_ids_));
|
||||||
|
}
|
||||||
|
|
||||||
|
(*out_buffer) = std::make_unique<DataBuffer>(0, DataBuffer::kDeBFlagNone);
|
||||||
|
std::shared_ptr<Tensor> sampled_ids;
|
||||||
|
RETURN_IF_NOT_OK(CreateSamplerTensor(&sampled_ids, subset_size_));
|
||||||
|
|
||||||
|
int64_t *sampled_ids_start_addr = reinterpret_cast<int64_t *>(sampled_ids->GetMutableBuffer());
|
||||||
|
|
||||||
|
while (current_id_ < subset_size_) {
|
||||||
|
int64_t sampled_id = start_index_ + current_id_;
|
||||||
|
if (HasChildSampler()) {
|
||||||
|
RETURN_IF_NOT_OK(GetAssociatedChildId(&sampled_id, sampled_id));
|
||||||
|
}
|
||||||
|
|
||||||
|
*(sampled_ids_start_addr + current_id_) = sampled_id;
|
||||||
|
current_id_++;
|
||||||
|
}
|
||||||
|
|
||||||
|
TensorRow sampled_ids_row(1, sampled_ids);
|
||||||
|
(*out_buffer)->set_tensor_table(std::make_unique<TensorQTable>(1, sampled_ids_row));
|
||||||
|
}
|
||||||
|
|
||||||
|
return Status::OK();
|
||||||
|
}
|
||||||
|
|
||||||
|
} // namespace dataset
|
||||||
|
} // namespace mindspore
|
||||||
@ -0,0 +1,58 @@
|
|||||||
|
/**
|
||||||
|
* Copyright 2019 Huawei Technologies Co., Ltd
|
||||||
|
*
|
||||||
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||||
|
* you may not use this file except in compliance with the License.
|
||||||
|
* You may obtain a copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
*
|
||||||
|
* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||||
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||||
|
* See the License for the specific language governing permissions and
|
||||||
|
* limitations under the License.
|
||||||
|
*/
|
||||||
|
#ifndef DATASET_ENGINE_DATASETOPS_SOURCE_SAMPLER_SUBSET_SAMPLER_H_
|
||||||
|
#define DATASET_ENGINE_DATASETOPS_SOURCE_SAMPLER_SUBSET_SAMPLER_H_
|
||||||
|
|
||||||
|
#include <memory>
|
||||||
|
#include <vector>
|
||||||
|
|
||||||
|
#include "dataset/engine/datasetops/source/sampler/sampler.h"
|
||||||
|
|
||||||
|
namespace mindspore {
|
||||||
|
namespace dataset {
|
||||||
|
|
||||||
|
class SubsetSampler : public Sampler {
|
||||||
|
public:
|
||||||
|
// Constructor.
|
||||||
|
// @param start_index The index we start sampling from.
|
||||||
|
explicit SubsetSampler(int64_t start_index, int64_t subset_size);
|
||||||
|
|
||||||
|
// Destructor.
|
||||||
|
~SubsetSampler() = default;
|
||||||
|
|
||||||
|
// Initialize the sampler.
|
||||||
|
// @return Status
|
||||||
|
Status InitSampler() override;
|
||||||
|
|
||||||
|
// Reset the internal variable to the initial state and reshuffle the indices.
|
||||||
|
// @return Status
|
||||||
|
Status Reset() override;
|
||||||
|
|
||||||
|
// Get the sample ids.
|
||||||
|
// @param[out] out_buffer The address of a unique_ptr to DataBuffer where the sample ids will be placed.
|
||||||
|
// @note the sample ids (int64_t) will be placed in one Tensor.
|
||||||
|
Status GetNextBuffer(std::unique_ptr<DataBuffer> *out_buffer) override;
|
||||||
|
|
||||||
|
private:
|
||||||
|
int64_t start_index_;
|
||||||
|
int64_t subset_size_;
|
||||||
|
int64_t current_id_;
|
||||||
|
};
|
||||||
|
|
||||||
|
} // namespace dataset
|
||||||
|
} // namespace mindspore
|
||||||
|
|
||||||
|
#endif // DATASET_ENGINE_DATASETOPS_SOURCE_SAMPLER_SUBSET_SAMPLER_H_
|
||||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
Loading…
Reference in new issue