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https://github.com/explosion/spaCy.git
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33af52599e
For caseless languages (Hebrew, Bengali) all characters are both lowercase and uppercase.
110 lines
2.3 KiB
Python
110 lines
2.3 KiB
Python
# coding: utf8
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from __future__ import unicode_literals
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import regex as re
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re.DEFAULT_VERSION = re.VERSION1
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_UNITS = """
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km km² km³ m m² m³ dm dm² dm³ cm cm² cm³ mm mm² mm³ ha µm nm yd in ft kg g mg
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µg t lb oz m/s km/h kmh mph hPa Pa mbar mb MB kb KB gb GB tb
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TB T G M K
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"""
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_CURRENCY = r"""
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\$ £ € ¥ ฿ US\$ C\$ A\$
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"""
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_QUOTES = r"""
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' '' " ” “ `` ` ‘ ´ ‚ , „ » «
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"""
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_PUNCT = r"""
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… , : ; \! \? ¿ ¡ \( \) \[ \] \{ \} < > _ # \* &
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"""
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_HYPHENS = r"""
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- – — -- ---
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"""
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LIST_ELLIPSES = [
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r'\.\.+',
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"…"
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]
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LIST_CURRENCY = list(_CURRENCY.strip().split())
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LIST_QUOTES = list(_QUOTES.strip().split())
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LIST_PUNCT = list(_PUNCT.strip().split())
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LIST_HYPHENS = list(_HYPHENS.strip().split())
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BENGALI = r'[\p{L}&&\p{Bengali}]'
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HEBREW = r'[\p{L}&&\p{Hebrew}]'
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LATIN_LOWER = r'[\p{Ll}&&\p{Latin}]'
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LATIN_UPPER = r'[\p{Lu}&&\p{Latin}]'
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LATIN = r'[[\p{Ll}||\p{Lu}]&&\p{Latin}]'
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ALPHA_LOWER = '[{}]'.format('||'.join([BENGALI, HEBREW, LATIN_LOWER]))
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ALPHA_UPPER = '[{}]'.format('||'.join([BENGALI, HEBREW, LATIN_UPPER]))
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ALPHA = '[{}]'.format('||'.join([BENGALI, HEBREW, LATIN]))
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QUOTES = _QUOTES.strip().replace(' ', '|')
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CURRENCY = _CURRENCY.strip().replace(' ', '|')
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UNITS = _UNITS.strip().replace(' ', '|').replace('\n', '|')
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HYPHENS = _HYPHENS.strip().replace(' ', '|')
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# Prefixes
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TOKENIZER_PREFIXES = (
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['§', '%', '=', r'\+'] +
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LIST_PUNCT +
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LIST_ELLIPSES +
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LIST_QUOTES +
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LIST_CURRENCY
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)
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# Suffixes
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TOKENIZER_SUFFIXES = (
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LIST_PUNCT +
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LIST_ELLIPSES +
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LIST_QUOTES +
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[
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r'(?<=[0-9])\+',
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r'(?<=°[FfCcKk])\.',
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r'(?<=[0-9])(?:{c})'.format(c=CURRENCY),
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r'(?<=[0-9])(?:{u})'.format(u=UNITS),
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r'(?<=[0-9{al}{p}(?:{q})])\.'.format(al=ALPHA_LOWER, p=r'%²\-\)\]\+', q=QUOTES),
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r'(?<=[{au}][{au}])\.'.format(au=ALPHA_UPPER),
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"'s", "'S", "’s", "’S"
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]
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)
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# Infixes
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TOKENIZER_INFIXES = (
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LIST_ELLIPSES +
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[
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r'(?<=[0-9])[+\-\*^](?=[0-9-])',
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r'(?<=[{al}])\.(?=[{au}])'.format(al=ALPHA_LOWER, au=ALPHA_UPPER),
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r'(?<=[{a}]),(?=[{a}])'.format(a=ALPHA),
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r'(?<=[{a}])[?";:=,.]*(?:{h})(?=[{a}])'.format(a=ALPHA, h=HYPHENS),
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r'(?<=[{a}"])[:<>=/](?=[{a}])'.format(a=ALPHA)
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]
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)
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__all__ = ["TOKENIZER_PREFIXES", "TOKENIZER_SUFFIXES", "TOKENIZER_INFIXES"]
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