corpusit


Namecorpusit JSON
Version 0.1.3 PyPI version JSON
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home_pageNone
SummaryNone
upload_time2022-12-07 02:38:09
maintainerNone
docs_urlNone
authorXin Du
requires_python>=3.6
licenseNone
keywords natural language modeling corpus skipgram
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requirements No requirements were recorded.
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            # Corpusit
`corpusit` provides easy-to-use dataset iterators for natural language modeling
tasks, such as SkipGram.

It is written in rust to enable fast multi-threading random sampling with
deterministic results. So you dont have to worry about the speed /
reproducibility.

Corpusit does not provide tokenization functionalities. So please use `corpusit`
on tokenized corpus files (plain texts).

# Environment

Python >= 3.6

# Installation

```bash
$ pip install corpusit
```

## On Windows and MacOS

Please install [rust](https://www.rust-lang.org/tools/install) compiler before
executing `pip install corpusit`. 

# Usage

## SkipGram

Each line in the corpus file is a document, and the tokens should be separated by whitespace.

```python
import corpusit

corpus_path = 'corpusit/data/corpus.txt'
vocab = corpusit.Vocab.build(corpus_path, min_count=1, unk='<unk>')

dataset = corpusit.SkipGramDataset(
    path_to_corpus=corpus_path,
    vocab=vocab,
    win_size=10,
    sep=" ",
    mode="onepass",       # onepass | repeat | shuffle
    subsample=1e-3,
    power=0.75,
    n_neg=1,
)

it = dataset.positive_sampler(batch_size=100, seed=0, num_threads=4)

for i, pair in enumerate(it):
    print(f'Iter {i:>4d}, shape={pair.shape}. First pair: '
          f'{pair[0,0]:>5} ({vocab.i2s[pair[0,0]]:>10}), '
          f'{pair[0,1]:>5} ({vocab.i2s[pair[0,1]]:>10})')

# Return:
# Iter    0, shape=(100, 2). First pair:    14 (        is),    10 ( anarchism)
# Iter    1, shape=(100, 2). First pair:     8 (        to),   540 (      and/)
# Iter    2, shape=(100, 2). First pair:   775 (constitutes),    34 (anarchists)
# Iter    3, shape=(100, 2). First pair:    72 (     other),   214 (  criteria)
# Iter    4, shape=(100, 2). First pair:   650 (  defining),   487 ( companion)
# ...
```


## SkipGram with negative sampling
```python
it = dataset.sampler(100, seed=0, num_threads=4)

for i, res in enumerate(it):
    pair, label = res
    print(f'Iter {i:>4d}, shape={pair.shape}. First pair: '
          f'{pair[0,0]:>5} ({vocab.i2s[pair[0,0]]:>10}), '
          f'{pair[0,1]:>5} ({vocab.i2s[pair[0,1]]:>10}), '
          f'label = {label[0]}')

# Returns:
# Iter    0, shape=(200, 2). First pair:    15 (        is),    10 ( anarchism), label = True
# Iter    1, shape=(200, 2). First pair:     9 (        to),   722 (      and/), label = True
# Iter    2, shape=(200, 2). First pair:   389 (constitutes),    34 (anarchists), label = True
# Iter    3, shape=(200, 2). First pair:    73 (     other),   212 (  criteria), label = True
# Iter    4, shape=(200, 2). First pair:   445 (  defining),   793 ( companion), label = True
# ...
```

# Roadmap
- GloVe


# License
MIT

            

Raw data

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    "description": "# Corpusit\n`corpusit` provides easy-to-use dataset iterators for natural language modeling\ntasks, such as SkipGram.\n\nIt is written in rust to enable fast multi-threading random sampling with\ndeterministic results. So you dont have to worry about the speed /\nreproducibility.\n\nCorpusit does not provide tokenization functionalities. So please use `corpusit`\non tokenized corpus files (plain texts).\n\n# Environment\n\nPython >= 3.6\n\n# Installation\n\n```bash\n$ pip install corpusit\n```\n\n## On Windows and MacOS\n\nPlease install [rust](https://www.rust-lang.org/tools/install) compiler before\nexecuting `pip install corpusit`. \n\n# Usage\n\n## SkipGram\n\nEach line in the corpus file is a document, and the tokens should be separated by whitespace.\n\n```python\nimport corpusit\n\ncorpus_path = 'corpusit/data/corpus.txt'\nvocab = corpusit.Vocab.build(corpus_path, min_count=1, unk='<unk>')\n\ndataset = corpusit.SkipGramDataset(\n    path_to_corpus=corpus_path,\n    vocab=vocab,\n    win_size=10,\n    sep=\" \",\n    mode=\"onepass\",       # onepass | repeat | shuffle\n    subsample=1e-3,\n    power=0.75,\n    n_neg=1,\n)\n\nit = dataset.positive_sampler(batch_size=100, seed=0, num_threads=4)\n\nfor i, pair in enumerate(it):\n    print(f'Iter {i:>4d}, shape={pair.shape}. First pair: '\n          f'{pair[0,0]:>5} ({vocab.i2s[pair[0,0]]:>10}), '\n          f'{pair[0,1]:>5} ({vocab.i2s[pair[0,1]]:>10})')\n\n# Return:\n# Iter    0, shape=(100, 2). First pair:    14 (        is),    10 ( anarchism)\n# Iter    1, shape=(100, 2). First pair:     8 (        to),   540 (      and/)\n# Iter    2, shape=(100, 2). First pair:   775 (constitutes),    34 (anarchists)\n# Iter    3, shape=(100, 2). First pair:    72 (     other),   214 (  criteria)\n# Iter    4, shape=(100, 2). First pair:   650 (  defining),   487 ( companion)\n# ...\n```\n\n\n## SkipGram with negative sampling\n```python\nit = dataset.sampler(100, seed=0, num_threads=4)\n\nfor i, res in enumerate(it):\n    pair, label = res\n    print(f'Iter {i:>4d}, shape={pair.shape}. First pair: '\n          f'{pair[0,0]:>5} ({vocab.i2s[pair[0,0]]:>10}), '\n          f'{pair[0,1]:>5} ({vocab.i2s[pair[0,1]]:>10}), '\n          f'label = {label[0]}')\n\n# Returns:\n# Iter    0, shape=(200, 2). First pair:    15 (        is),    10 ( anarchism), label = True\n# Iter    1, shape=(200, 2). First pair:     9 (        to),   722 (      and/), label = True\n# Iter    2, shape=(200, 2). First pair:   389 (constitutes),    34 (anarchists), label = True\n# Iter    3, shape=(200, 2). First pair:    73 (     other),   212 (  criteria), label = True\n# Iter    4, shape=(200, 2). First pair:   445 (  defining),   793 ( companion), label = True\n# ...\n```\n\n# Roadmap\n- GloVe\n\n\n# License\nMIT\n",
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