nltk-vader-sentiment
Copyright (c) 2026 alvations

This package is a from-scratch modern reimplementation of VADER (Valence
Aware Dictionary and sEntiment Reasoner), licensed under the Apache License,
Version 2.0.

The VADER algorithm, the VADER sentiment lexicon (vader_lexicon.txt) and the
emoji lexicon (emoji_utf8_lexicon.txt) were created by C.J. Hutto and released
under the MIT License:

    Copyright (c) 2016 C.J. Hutto
    https://github.com/cjhutto/vaderSentiment

The lexicon data bundled in vader/data/ is generated from those files.

If you use the VADER sentiment analysis tools, please cite:

    Hutto, C.J. & Gilbert, E.E. (2014). VADER: A Parsimonious Rule-based Model
    for Sentiment Analysis of Social Media Text. Eighth International
    Conference on Weblogs and Social Media (ICWSM-14). Ann Arbor, MI, June
    2014.
