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104 lines
3.1 KiB
Python
104 lines
3.1 KiB
Python
#
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# Copyright 2014 Grupo de Sistemas Inteligentes (GSI) DIT, UPM
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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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from senpy.plugins import Transformation
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from senpy.models import Entry
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from nltk.tokenize.punkt import PunktSentenceTokenizer
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from nltk.tokenize.simple import LineTokenizer
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class Split(Transformation):
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'''
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A plugin that chunks input text, into paragraphs or sentences.
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It does not provide any sort of annotation, and it is meant to precede
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other annotation plugins, when the annotation of individual sentences
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(or paragraphs) is required.
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'''
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author = ["@militarpancho", '@balkian']
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version = '0.3'
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url = "https://github.com/gsi-upm/senpy"
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nltk_resources = ['punkt']
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extra_params = {
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'delimiter': {
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'description': 'Split text into paragraphs or sentences.',
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'aliases': ['type', 't'],
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'required': False,
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'default': 'sentence',
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'options': ['sentence', 'paragraph']
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},
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}
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def analyse_entry(self, entry, activity):
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yield entry
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chunker_type = activity.params["delimiter"]
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original_text = entry['nif:isString']
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if chunker_type == "sentence":
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tokenizer = PunktSentenceTokenizer()
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if chunker_type == "paragraph":
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tokenizer = LineTokenizer()
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chars = list(tokenizer.span_tokenize(original_text))
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if len(chars) == 1:
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# This sentence was already split
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return
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for i, chunk in enumerate(chars):
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start, end = chunk
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e = Entry()
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e['nif:isString'] = original_text[start:end]
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if entry.id:
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e.id = entry.id + "#char={},{}".format(start, end)
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yield e
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test_cases = [
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{
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'entry': {
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'nif:isString': 'Hello. World.'
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},
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'params': {
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'delimiter': 'sentence',
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},
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'expected': [
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{
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'nif:isString': 'Hello.'
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},
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{
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'nif:isString': 'World.'
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}
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]
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},
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{
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'entry': {
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"@id": ":test",
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'nif:isString': 'Hello\nWorld'
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},
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'params': {
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'delimiter': 'paragraph',
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},
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'expected': [
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{
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"@id": ":test#char=0,5",
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'nif:isString': 'Hello'
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},
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{
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"@id": ":test#char=6,11",
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'nif:isString': 'World'
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}
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]
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}
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]
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