add aclImdb preprocess example
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This example is used to read data from aclImdb dataset and generate mindrecord. It just transfers the aclImdb dataset to mindrecord without any data preprocessing. You can modify the example or follow the example to implement your own example.
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This example is used to read data from aclImdb dataset and generate mindrecord. It just transfers the aclImdb dataset to mindrecord without any data preprocessing. You can modify the example or follow the example to implement your own example.
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1. run.sh: generate MindRecord entry script.
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1. run.sh: generate MindRecord entry script.
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- gen_mindrecord.py : read the aclImdb data and tranfer it to mindrecord.
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- gen_mindrecord.py : read the aclImdb data and transfer it to mindrecord.
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2. run_read.py: create MindDataset by MindRecord entry script.
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2. run_read.py: create MindDataset by MindRecord entry script.
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- create_dataset.py: use MindDataset to read MindRecord to generate dataset.
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- create_dataset.py: use MindDataset to read MindRecord to generate dataset.
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## How to use the example to generate MindRecord
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## How to use the example to generate MindRecord
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Download aclImdb dataset, tranfer it to mindrecord, use MindDataset to read mindrecord.
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Download aclImdb dataset, transfer it to mindrecord, use MindDataset to read mindrecord.
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### Download aclImdb dataset and unzip
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### Download aclImdb dataset and unzip
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# Guideline to Preprocess Large Movie Review Dataset - aclImdb to MindRecord
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<!-- TOC -->
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- [What does the example do](#what-does-the-example-do)
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- [How to use the example to generate MindRecord](#how-to-use-the-example-to-generate-mindrecord)
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- [Download aclImdb dataset and unzip](#download-aclimdb-dataset-and-unzip)
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- [Generate MindRecord](#generate-mindrecord)
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- [Create MindDataset By MindRecord](#create-minddataset-by-mindrecord)
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<!-- /TOC -->
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## What does the example do
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This example is used to read data from aclImdb dataset, preprocess it and generate mindrecord. The preprocessing process mainly uses vocab file to convert the training set text into dictionary sequence, which can be further used in the subsequent training process.
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1. run.sh: generate MindRecord entry script.
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- gen_mindrecord.py : read the aclImdb data, preprocess it and transfer it to mindrecord.
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2. run_read.py: create MindDataset by MindRecord entry script.
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- create_dataset.py: use MindDataset to read MindRecord to generate dataset.
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## How to use the example to generate MindRecord
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Download aclImdb dataset, transfer it to mindrecord, use MindDataset to read mindrecord.
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### Download aclImdb dataset and unzip
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1. Download the training data zip.
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> [aclImdb dataset download address](http://ai.stanford.edu/~amaas/data/sentiment/) **-> Large Movie Review Dataset v1.0**
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2. Unzip the training data to dir example/nlp_to_mindrecord/aclImdb_preprocess/data.
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```
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tar -zxvf aclImdb_v1.tar.gz -C {your-mindspore}/example/nlp_to_mindrecord/aclImdb_preprocess/data/
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```
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### Generate MindRecord
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1. Run the run.sh script.
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```bash
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bash run.sh
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```
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2. Output like this:
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```
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...
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>> begin generate mindrecord by train data
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>> transformed 256 record...
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>> transformed 512 record...
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>> transformed 768 record...
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>> transformed 1024 record...
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...
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>> transformed 25000 record...
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[INFO] MD(6553,python):2020-05-14-16:10:44.947.617 [mindspore/ccsrc/mindrecord/io/shard_writer.cc:227] Commit] Write metadata successfully.
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[INFO] MD(6553,python):2020-05-14-16:10:44.948.193 [mindspore/ccsrc/mindrecord/io/shard_index_generator.cc:59] Build] Init header from mindrecord file for index successfully.
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[INFO] MD(6553,python):2020-05-14-16:10:44.974.544 [mindspore/ccsrc/mindrecord/io/shard_index_generator.cc:600] DatabaseWriter] Init index db for shard: 0 successfully.
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[INFO] MD(6553,python):2020-05-14-16:10:46.110.119 [mindspore/ccsrc/mindrecord/io/shard_index_generator.cc:549] ExecuteTransaction] Insert 25000 rows to index db.
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[INFO] MD(6553,python):2020-05-14-16:10:46.128.212 [mindspore/ccsrc/mindrecord/io/shard_index_generator.cc:620] DatabaseWriter] Generate index db for shard: 0 successfully.
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[INFO] ME(6553:139716072798016,MainProcess):2020-05-14-16:10:46.130.596 [mindspore/mindrecord/filewriter.py:313] The list of mindrecord files created are: ['output/aclImdb_train.mindrecord'], and the list of index files are: ['output/aclImdb_train.mindrecord.db']
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>> begin generate mindrecord by test data
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>> transformed 256 record...
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>> transformed 512 record...
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>> transformed 768 record...
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>> transformed 1024 record...
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...
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[INFO] MD(6553,python):2020-05-14-16:10:55.047.633 [mindspore/ccsrc/mindrecord/io/shard_index_generator.cc:600] DatabaseWriter] Init index db for shard: 0 successfully.
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[INFO] MD(6553,python):2020-05-14-16:10:56.092.477 [mindspore/ccsrc/mindrecord/io/shard_index_generator.cc:549] ExecuteTransaction] Insert 25000 rows to index db.
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[INFO] MD(6553,python):2020-05-14-16:10:56.107.799 [mindspore/ccsrc/mindrecord/io/shard_index_generator.cc:620] DatabaseWriter] Generate index db for shard: 0 successfully.
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[INFO] ME(6553:139716072798016,MainProcess):2020-05-14-16:10:56.111.193 [mindspore/mindrecord/filewriter.py:313] The list of mindrecord files created are: ['output/aclImdb_test.mindrecord'], and the list of index files are: ['output/aclImdb_test.mindrecord.db']
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```
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3. Generate mindrecord files
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```
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$ ls output/
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aclImdb_test.mindrecord aclImdb_test.mindrecord.db aclImdb_train.mindrecord aclImdb_train.mindrecord.db README.md
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```
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### Create MindDataset By MindRecord
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1. Run the run_read.sh script.
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```bash
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bash run_read.sh
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```
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2. Output like this:
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```
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example 24992: {'input_ids': array([ -1, -1, 65, 0, 89, 0, 367, 0, -1,
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-1, -1, -1, 488, 0, 0, 0, 206, 0,
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816, 0, -1, -1, 16, 0, -1, -1, 11998,
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0, 0, 0, 852, 0, 1, 0, 111, 0,
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-1, -1, -1, -1, 765, 0, 9, 0, 17,
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0, 35, 0, 72, 0, -1, -1, -1, -1,
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40, 0, 895, 0, 41, 0, 0, 0, 6952,
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0, 170, 0, -1, -1, -1, -1, 3, 0,
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28, 0, -1, -1, 0, 0, 111, 0, 58,
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0, 110, 0, 569, 0, -1, -1, -1, -1,
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-1, -1, 0, 0, 24512, 0, 3, 0, 0,
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0], dtype=int32), 'id': array(8045, dtype=int32), 'input_mask': array([1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0], dtype=int32), 'segment_ids': array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], dtype=int32), 'score': array(1, dtype=int32), 'label': array(1, dtype=int32)}
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example 24993: {'input_ids': array([ -1, -1, 11, 0, 7400, 0, 189, 0, 4, 0, 1247,
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0, 9, 0, 17, 0, 29, 0, 0, 0, -1, -1,
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-1, -1, -1, -1, 1, 0, -1, -1, 218, 0, 131,
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0, 10, 0, -1, -1, 52, 0, 72, 0, 488, 0,
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6, 0, -1, -1, -1, -1, -1, -1, 1749, 0, 0,
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0, -1, -1, 42, 0, 21, 0, 65, 0, 6895, 0,
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-1, -1, -1, -1, -1, -1, 11, 0, 52, 0, 72,
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0, 1498, 0, 10, 0, 21, 0, 65, 0, 19, 0,
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-1, -1, -1, -1, 36, 0, 130, 0, 88, 0, 210,
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0], dtype=int32), 'id': array(9903, dtype=int32), 'input_mask': array([1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0], dtype=int32), 'segment_ids': array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], dtype=int32), 'score': array(7, dtype=int32), 'label': array(0, dtype=int32)}
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```
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- id : the id "3219" is from review docs like **3219**_10.txt.
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- label : indicates whether the review is positive or negative, positive: 0, negative: 1.
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- score : the score "10" is from review docs like 3219_**10**.txt.
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- input_ids : the input_ids are from the review dos's content which mapped by imdb.vocab file.
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- input_mask : the input_mask are from the review dos's content which mapped by imdb.vocab file.
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- segment_ids : the segment_ids are from the review dos's content which mapped by imdb.vocab file.
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# Copyright 2020 Huawei Technologies Co., Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ============================================================================
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"""create MindDataset by MindRecord"""
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import mindspore.dataset as ds
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def create_dataset(data_file):
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"""create MindDataset"""
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num_readers = 4
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data_set = ds.MindDataset(dataset_file=data_file,
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num_parallel_workers=num_readers,
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shuffle=True)
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index = 0
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for item in data_set.create_dict_iterator():
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print("example {}: {}".format(index, item))
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index += 1
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if index % 1000 == 0:
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print(">> read rows: {}".format(index))
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print(">> total rows: {}".format(index))
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if __name__ == '__main__':
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create_dataset('output/aclImdb_train.mindrecord')
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create_dataset('output/aclImdb_test.mindrecord')
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## The input dataset
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# Copyright 2020 Huawei Technologies Co., Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ============================================================================
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"""get data from aclImdb and write the data to mindrecord file"""
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import collections
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import os
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import re
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import string
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import numpy as np
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from mindspore.mindrecord import FileWriter
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ACLIMDB_DIR = "data/aclImdb"
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MINDRECORD_FILE_NAME_TRAIN = "output/aclImdb_train.mindrecord"
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MINDRECORD_FILE_NAME_TEST = "output/aclImdb_test.mindrecord"
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def inputs(vectors, maxlen=50):
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"""generate input_ids, mask, segemnt"""
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length = len(vectors)
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if length > maxlen:
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return vectors[0:maxlen], [1]*maxlen, [0]*maxlen
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input_ = vectors+[0]*(maxlen-length)
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mask = [1]*length + [0]*(maxlen-length)
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segment = [0]*maxlen
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return input_, mask, segment
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def get_nlp_data(data_dir, vocab_dict):
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"""get data from dir like aclImdb/train"""
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dir_list = [os.path.join(data_dir, "pos"),
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os.path.join(data_dir, "neg")]
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for index, exact_dir in enumerate(dir_list):
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if not os.path.exists(exact_dir):
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raise IOError("dir {} not exists".format(exact_dir))
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vocab_dict = load_vocab(os.path.join(data_dir, "../imdb.vocab"))
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for item in os.listdir(exact_dir):
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data = {}
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# file name like 4372_2.txt, we will get id: 4372, score: 2
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id_score = item.split("_", 1)
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score = id_score[1].split(".", 1)
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review_file = open(os.path.join(exact_dir, item), "r")
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review = review_file.read()
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review_file.close()
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vectors = []
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vectors += [vocab_dict.get(i) if i in vocab_dict else -1
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for i in re.findall(r"[\w']+|[{}]".format(string.punctuation), review)]
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input_, mask, segment = inputs(vectors)
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input_ids = np.reshape(np.array(input_), [1, -1])
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input_mask = np.reshape(np.array(mask), [1, -1])
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segment_ids = np.reshape(np.array(segment), [1, -1])
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data = {
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"label": int(index), # indicate pos: 0, neg: 1
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"id": int(id_score[0]),
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"score": int(score[0]),
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"input_ids": input_ids, # raw content convert it
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"input_mask": input_mask, # raw content convert it
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"segment_ids": segment_ids # raw content convert it
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}
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yield data
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def convert_to_uni(text):
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"""convert bytes to text"""
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if isinstance(text, str):
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return text
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if isinstance(text, bytes):
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return text.decode('utf-8', 'ignore')
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raise Exception("The type %s does not convert!" % type(text))
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def load_vocab(vocab_file):
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"""load vocabulary to translate statement."""
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vocab = collections.OrderedDict()
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vocab.setdefault('blank', 2)
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index = 0
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with open(vocab_file) as reader:
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while True:
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tmp = reader.readline()
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if not tmp:
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break
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token = convert_to_uni(tmp)
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token = token.strip()
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vocab[token] = index
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index += 1
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return vocab
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def gen_mindrecord(data_type):
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||||||
|
"""gen mindreocrd according exactly schema"""
|
||||||
|
if data_type == "train":
|
||||||
|
fw = FileWriter(MINDRECORD_FILE_NAME_TRAIN)
|
||||||
|
else:
|
||||||
|
fw = FileWriter(MINDRECORD_FILE_NAME_TEST)
|
||||||
|
|
||||||
|
schema = {"id": {"type": "int32"},
|
||||||
|
"label": {"type": "int32"},
|
||||||
|
"score": {"type": "int32"},
|
||||||
|
"input_ids": {"type": "int32", "shape": [-1]},
|
||||||
|
"input_mask": {"type": "int32", "shape": [-1]},
|
||||||
|
"segment_ids": {"type": "int32", "shape": [-1]}}
|
||||||
|
fw.add_schema(schema, "aclImdb preprocessed dataset")
|
||||||
|
fw.add_index(["id", "label", "score"])
|
||||||
|
|
||||||
|
vocab_dict = load_vocab(os.path.join(ACLIMDB_DIR, "imdb.vocab"))
|
||||||
|
|
||||||
|
get_data_iter = get_nlp_data(os.path.join(ACLIMDB_DIR, data_type), vocab_dict)
|
||||||
|
|
||||||
|
batch_size = 256
|
||||||
|
transform_count = 0
|
||||||
|
while True:
|
||||||
|
data_list = []
|
||||||
|
try:
|
||||||
|
for _ in range(batch_size):
|
||||||
|
data_list.append(get_data_iter.__next__())
|
||||||
|
transform_count += 1
|
||||||
|
fw.write_raw_data(data_list)
|
||||||
|
print(">> transformed {} record...".format(transform_count))
|
||||||
|
except StopIteration:
|
||||||
|
if data_list:
|
||||||
|
fw.write_raw_data(data_list)
|
||||||
|
print(">> transformed {} record...".format(transform_count))
|
||||||
|
break
|
||||||
|
|
||||||
|
fw.commit()
|
||||||
|
|
||||||
|
def main():
|
||||||
|
# generate mindrecord for train
|
||||||
|
print(">> begin generate mindrecord by train data")
|
||||||
|
gen_mindrecord("train")
|
||||||
|
|
||||||
|
# generate mindrecord for test
|
||||||
|
print(">> begin generate mindrecord by test data")
|
||||||
|
gen_mindrecord("test")
|
||||||
|
|
||||||
|
if __name__ == "__main__":
|
||||||
|
main()
|
||||||
|
|
@ -0,0 +1 @@
|
||||||
|
## Output the mindrecord
|
||||||
|
|
@ -0,0 +1,20 @@
|
||||||
|
#!/bin/bash
|
||||||
|
# Copyright 2020 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.
|
||||||
|
# ============================================================================
|
||||||
|
|
||||||
|
rm -f output/aclImdb_train.mindrecord*
|
||||||
|
rm -f output/aclImdb_test.mindrecord*
|
||||||
|
|
||||||
|
python gen_mindrecord.py
|
||||||
|
|
@ -0,0 +1,17 @@
|
||||||
|
#!/bin/bash
|
||||||
|
# Copyright 2020 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.
|
||||||
|
# ============================================================================
|
||||||
|
|
||||||
|
python create_dataset.py
|
||||||
Loading…
Reference in New Issue