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Summa - Textrank

TextRank implementation in Python

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summa - textrank

TextRank_ implementation for text summarization and keyword extraction in Python

.. _TextRank: http://web.eecs.umich.edu/~mihalcea/papers/mihalcea.emnlp04.pdf

Features

Text summarization
Keyword extraction
Text modeling with graph and gexf exportation

Examples

Text summarization::

>>> text = """Automatic summarization is the process of reducing a text document with a
computer program in order to create a summary that retains the most important points
of the original document. As the problem of information overload has grown, and as
the quantity of data has increased, so has interest in automatic summarization.
Technologies that can make a coherent summary take into account variables such as
length, writing style and syntax. An example of the use of summarization technology
is search engines such as Google. Document summarization is another."""

>>> from summa import summarizer
>>> print summarizer.summarize(text)
'Automatic summarization is the process of reducing a text document with a computer
program in order to create a summary that retains the most important points of the
original document.'

Keyword extraction::

>>> from summa import keywords
>>> print keywords.keywords(text)
document
automatic summarization
technologies
technology

Installation

This software depends on NumPy and Scipy <http://www.scipy.org/Download>_, two Python packages for scientific computing. You must have them installed prior to installing summa::

pip install summa

If you are going to use the export function, you also need NetworkX <https://networkx.github.io/download.html>. For a better performance of keyword extraction, install Pattern <http://www.clips.ua.ac.be/pattern>

This version has been tested under Python 2.7

More examples

Command-line usage::

cd path/to/folder/summa/ python textrank.py -t FILE
Export::

from summa.export import gexf_export gexf_export(text, path="graph.gexf")
Define length of the summary as a proportion of the text (also available in :code:keywords)::

from summa.summarizer import summarize summarize(text, ratio=0.2)
Define length of the summary by aproximate number of words (also available in :code:keywords)::

summarize(text, words=50)
Define input text language (also available in :code:keywords)::

summarize(text, language='spanish')

The available languages are "danish", "dutch", "english", "finnish", "french", "german", "hungarian", "italian", "norwegian", "porter", "portuguese", "romanian", "russian", "spanish", "swedish"

Get results as a list::

summarize(text, split=True) ['Automatic summarization is the process of reducing a text document with a computer program in order to create a summary that retains the most important points of the original document.']