An extension for asreview implements a version of the tf-idf feature extractor that saves the matrix and the vocabulary.

Last update: Jun 17, 2022

Overview

Extension - matrix and vocabulary extractor for TF-IDF and Doc2Vec

An extension for ASReview that adds a tf-idf extractor that saves the matrix and the vocabulary to pickle and JSON respectively, and a doc2vec extractor that grabs the entire doc2vec model. Requested in discussion post #650.

Getting started

Install the new classifier with:

pip install .

python -m pip install git+https://github.com/asreview/asreview-extension-vocab-extractor.git

Usage

Run the simulation as usual, but this time use tfidf_grab or doc2vec_grab as feature extractor. Extracts the matrix and the vocabulary during simulation preparation. The new Feature extractor tfidf_grab is defined in asreviewcontrib.models.tfidf_grab.py, and doc2vec_grab is defined in asreviewcontrib.models.doc2vec_grab.py.

The new tf-idf extractor can be used like this:

asreview simulate benchmark:van_de_Schoot_2017 --state_file myreview.h5 -e tfidf_grab

The vocabulary is saved to the current folder as vocabulary.json, and the matrix is pickled to matrix.pickle.

NOTE Extracting the pickle can be done like this:

import pickle

matrix = pickle.load(open("matrix.pickle","rb"))
print(matrix.shape)

The new doc2vec extractor can be used like this, assuming gensim is installed:

asreview simulate benchmark:van_de_Schoot_2017 --state_file myreview.h5 -e doc2vec_grab

The doc2vec extractor will store the entire model to gensim.model. As this might be a difficult file to work with, included in the repo is the file example_doc2vec.ipynb. This notebook contains code that transforms the gensim model to a dict object with words and their corresponding vector.

Contact

The best resources to find an answer to your question or ways to get in contact are:

Issues or feature requests - Extension issue tracker
Contact - [email protected]

License

Apache-2.0

Releases(v0.2.1)

v0.2.1(Sep 6, 2021)

Clean up github page
Source code(tar.gz)
Source code(zip)
v0.2(Sep 3, 2021)

Add doc2vec
Source code(tar.gz)
Source code(zip)
V0.1(Sep 3, 2021)

Should be totally functional, ready for public testing.
Source code(tar.gz)
Source code(zip)

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An extension for asreview implements a version of the tf-idf feature extractor that saves the matrix and the vocabulary.

Related tags

Overview

Extension - matrix and vocabulary extractor for TF-IDF and Doc2Vec

Getting started

Usage

Contact

License

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