shapiro

Lexicon based sentiment analysis.

Overview

Shapiro provides building blocks for sentiment analysis. The current implementation is a improved variant of code examples from a talk about Introduction to sentiment analysis with spaCy I gave at the EuroPython 2018 conference.

Shapiro's goals are:

provide functions for common preprocessing tasks like replacing synonyms and unifying emojis/smiley codes
provide means to read a sentiment lexicon and match tokens with it
provide ways to model domain independent sentiment specific parts of Latin based languages (like negators and intensifiers)
provide means to assign sentiment information to idioms
(long term) provide ways to model a grammar for more advanced sentiment analysis similar to the one described Bing Liu (2015) "Sentiment Analysis: Mining Opinions, Sentiments, and Emotions".

Currently it provides basic support for:

Users can provide lexicons (in CSV format) to assign topics and ratings to sentiment words
Negators, intensifiers and diminishers (and combinations of them). Currently there is support for English and German. Adding more languages based on Latin should be possible.
Lemmatization, part of speech tagging and basic language modelling by using spaCy.

This is a work in progress and features might be added and changed as seem fit. So the API is a moving target.

To use shapiro, you need Python and spaCy. The easiest way to get it is:

Download and install anaconda from https://www.anaconda.com/download/
Install spaCy:
```
conda install -c conda-forge spacy
```
Download the language models you need. For example to get English and German run:
```
python -m spacy download en
python -m spacy download de
```

For more information on installing spaCy visit https://spacy.io/usage/. For details on available free language models visit https://spacy.io/usage/models.