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frame-english-fast

Token Classification Flair PyTorch
English sequence-tagger-model
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initial model commit

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  1. README.md +136 -0
  2. loss.tsv +151 -0
  3. pytorch_model.bin +3 -0
  4. training.log +0 -0
README.md ADDED
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+ ---
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+ tags:
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+ - flair
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+ - token-classification
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+ - sequence-tagger-model
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+ language: en
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+ datasets:
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+ - ontonotes
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+ inference: false
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+ ---
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+
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+ ## English Verb Disambiguation in Flair (fast model)
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+
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+ This is the fast verb disambiguation model for English that ships with [Flair](https://github.com/flairNLP/flair/).
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+
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+ F1-Score: **88,27** (Ontonotes) - predicts [Proposition Bank verb frames](http://verbs.colorado.edu/propbank/framesets-english-aliases/).
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+
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+ Based on [Flair embeddings](https://www.aclweb.org/anthology/C18-1139/) and LSTM-CRF.
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+
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+ ---
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+
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+ ### Demo: How to use in Flair
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+
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+ Requires: **[Flair](https://github.com/flairNLP/flair/)** (`pip install flair`)
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+
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+ ```python
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+ from flair.data import Sentence
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+ from flair.models import SequenceTagger
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+
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+ # load tagger
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+ tagger = SequenceTagger.load("flair/frame-english-fast")
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+
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+ # make example sentence
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+ sentence = Sentence("George returned to Berlin to return his hat.")
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+
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+ # predict NER tags
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+ tagger.predict(sentence)
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+
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+ # print sentence
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+ print(sentence)
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+
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+ # print predicted NER spans
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+ print('The following frame tags are found:')
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+ # iterate over entities and print
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+ for entity in sentence.get_spans('frame'):
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+ print(entity)
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+
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+ ```
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+
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+ This yields the following output:
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+ ```
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+ Span [2]: "returned" [− Labels: return.01 (0.9867)]
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+ Span [6]: "return" [− Labels: return.02 (0.4741)]
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+ ```
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+
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+ So, the word "*returned*" is labeled as **return.01** (as in *go back somewhere*) while "*return*" is labeled as **return.02** (as in *give back something*) in the sentence "*George returned to Berlin to return his hat*".
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+
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+
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+ ---
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+
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+ ### Training: Script to train this model
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+
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+ The following Flair script was used to train this model:
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+
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+ ```python
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+ from flair.data import Corpus
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+ from flair.datasets import ColumnCorpus
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+ from flair.embeddings import WordEmbeddings, StackedEmbeddings, FlairEmbeddings
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+
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+ # 1. load the corpus (Ontonotes does not ship with Flair, you need to download and reformat into a column format yourself)
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+ corpus = ColumnCorpus(
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+ "resources/tasks/srl", column_format={1: "text", 11: "frame"}
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+ )
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+
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+ # 2. what tag do we want to predict?
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+ tag_type = 'frame'
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+
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+ # 3. make the tag dictionary from the corpus
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+ tag_dictionary = corpus.make_tag_dictionary(tag_type=tag_type)
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+
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+ # 4. initialize each embedding we use
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+ embedding_types = [
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+
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+ BytePairEmbeddings("en"),
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+
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+ FlairEmbeddings("news-forward-fast"),
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+
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+ FlairEmbeddings("news-backward-fast"),
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+ ]
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+
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+ # embedding stack consists of Flair and GloVe embeddings
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+ embeddings = StackedEmbeddings(embeddings=embedding_types)
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+
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+ # 5. initialize sequence tagger
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+ from flair.models import SequenceTagger
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+
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+ tagger = SequenceTagger(hidden_size=256,
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+ embeddings=embeddings,
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+ tag_dictionary=tag_dictionary,
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+ tag_type=tag_type)
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+
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+ # 6. initialize trainer
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+ from flair.trainers import ModelTrainer
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+
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+ trainer = ModelTrainer(tagger, corpus)
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+
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+ # 7. run training
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+ trainer.train('resources/taggers/frame-english-fast',
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+ train_with_dev=True,
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+ max_epochs=150)
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+ ```
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+
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+
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+
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+ ---
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+
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+ ### Cite
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+
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+ Please cite the following paper when using this model.
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+
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+ ```
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+ @inproceedings{akbik2019flair,
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+ title={FLAIR: An easy-to-use framework for state-of-the-art NLP},
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+ author={Akbik, Alan and Bergmann, Tanja and Blythe, Duncan and Rasul, Kashif and Schweter, Stefan and Vollgraf, Roland},
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+ booktitle={{NAACL} 2019, 2019 Conference of the North American Chapter of the Association for Computational Linguistics (Demonstrations)},
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+ pages={54--59},
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+ year={2019}
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+ }
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+
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+ ```
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+
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+ ---
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+
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+ ### Issues?
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+
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+ The Flair issue tracker is available [here](https://github.com/flairNLP/flair/issues/).
loss.tsv ADDED
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training.log ADDED
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