GitXplorerGitXplorer
a

dependency-paraphraser

public
22 stars
6 forks
1 issues

Commits

List of commits on branch master.
Unverified
b3b393877736127c8c52b46b8d1122182ab381b3

fix synonyms with udpipe

aavidale committed 3 years ago
Unverified
fe37e56765aa85b2e9d212767ad737a9265469f0

fix projection in case of invalid trees

aavidale committed 4 years ago
Unverified
98b7ca1e82f03d4c491dd4cc2baff90e0a3c1248

fix style

aavidale committed 5 years ago
Unverified
b31f808b6d526972a5932aba7c99dabcc74870e9

add udpipe support and a script for training projectors

aavidale committed 5 years ago
Unverified
35959b57858a365295821a9fdda5ac622044aaf0

up version and fix readme

aavidale committed 5 years ago
Unverified
7ae1a802f3f74ad74e8ce3214952138a91f3214a

first commit

aavidale committed 5 years ago

README

The README file for this repository.

dependency-paraphraser

A sentence paraphraser based on dependency parsing and word embedding similarity.

How the paraphraser works:

  1. Create a random projection of the dependency tree
  2. Replace several words with similar ones

The basic usage (for Russian language) is based on Natasha library:

pip install dependency-paraphraser natasha
import dependency_paraphraser.natasha
import random
random.seed(42)
text = 'каждый охотник желает знать где сидит фазан'
for i in range(3):
    print(dependency_paraphraser.natasha.paraphrase(text, tree_temperature=2))
# желает знать сидит фазан где каждый охотник
# каждый охотник желает знать где фазан сидит
# знать где фазан сидит каждый охотник желает

You can provide your own w2v model to replace words with similar ones:

import compress_fasttext
small_model = compress_fasttext.models.CompressedFastTextKeyedVectors.load(
    'https://github.com/avidale/compress-fasttext/releases/download/v0.0.1/ft_freqprune_100K_20K_pq_100.bin'
)
random.seed(42)
for i in range(3):
    print(dependency_paraphraser.natasha.paraphrase(text, w2v=small_model, p_rep=0.8, min_sim=0.55))
# стремится каждый охотник знать рябчик где усаживается
# каждый охотник хочет узнать фазан где просиживает
# каждый охотник хочет узнать фазан где восседает

Alternatively, you can expand and use the w2v model from Natasha (aka navec):

navec_model = dependency_paraphraser.natasha.emb.as_gensim
random.seed(42)
for i in range(3):
    print(dependency_paraphraser.natasha.paraphrase(text, w2v=navec_model, p_rep=0.5, min_sim=0.55))
# желает каждый охотник помнить фазан где лежит
# каждый охотник желает знать фазан где сидит
# каждый охотник оставляет понять где фазан лежит

For other languages, one way to use this paraphraser is with the UDPipe library

pip install dependency-paraphraser ufal.udpipe pyconll
import dependency_paraphraser.udpipe
path = 'english-ewt-ud-2.5-191206.udpipe'
pipe = dependency_paraphraser.udpipe.Model(path)
projector = dependency_paraphraser.udpipe.en_udpipe_projector

text = 'in April 2012 they released the videoclip for a new single entitled Giorgio Mastrota'
for i in range(3):
    print(dependency_paraphraser.udpipe.paraphrase(text, pipe, projector=projector, tree_temperature=1))
# they released the videoclip in April 2012 for a new entitled Mastrota single Giorgio
# they released in April 2012 the videoclip for a entitled single new Giorgio Mastrota
# they released the videoclip in April 2012 for a new single Giorgio Mastrota entitled

Projectors (models for projecting dependency trees into a flat sentence) can be trained for any language, if you have a corpus of unlabeled sentences and a syntax parser to label them:

import dependency_paraphraser.udpipe
import dependency_paraphraser.train_projector
parser = dependency_paraphraser.udpipe.Model(path_to_your_model)

sents = dependency_paraphraser.train_projector.label_udpipe_sentences(
    texts=your_corpus,
    model=parser,
)
projector = dependency_paraphraser.train_projector.train_projector(sents)