crawlservpp::Data::Sentiment Class Reference

Implementation of the VADER sentiment analysis algorithm. More...

#include <Sentiment.hpp>

Construction
	Sentiment (const std::string &dictionaryFile, const std::string &emojiFile)
	Constructor. More...

Getters
std::size_t	getDictSize () const
	Gets the number of dictionary entries. More...
std::size_t	getEmojiNum () const
	Gets the number of entries in the emoji dictionary. More...

Sentiment Analysis
SentimentScores	analyze (const Tokens &tokens)
	Get the sentiment strength in the given sentence. More...

Detailed Description

Implementation of the VADER sentiment analysis algorithm.

See:

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.

Warning

For English language only!

Constructor & Destructor Documentation

Sentiment()

crawlservpp::Data::Sentiment::Sentiment ( const std::string &  dictionaryFile, const std::string &  emojiFile  )

inline

Constructor.

Creates the dictionaries from the given files.

Parameters

dictionaryFile	Constant reference to a string containing the file name of the dictionary to be used.
emojiFile	Constant reference to a string containing the file name of the emoji dictionary to be used.

Member Function Documentation

analyze()

SentimentScores crawlservpp::Data::Sentiment::analyze ( const Tokens &  tokens )

inline

Get the sentiment strength in the given sentence.

Parameters

tokens

Constant reference to a vector containing the tokens of the sentence.

Returns

Floating point number representing sentiment strength based on input. Positive values are positive valence, negative values are negative valence.

References crawlservpp::Data::SentimentScores::compound, crawlservpp::Data::VaderButFactorAfter, crawlservpp::Data::VaderButFactorBefore, crawlservpp::Data::VaderC_INCR, crawlservpp::Data::VaderDampOne, crawlservpp::Data::VaderDampTwo, crawlservpp::Data::VaderFOne, crawlservpp::Data::VaderN_SCALAR, crawlservpp::Data::VaderNeverFactor, crawlservpp::Data::VaderOne, crawlservpp::Data::VaderThree, crawlservpp::Data::VaderTwo, and crawlservpp::Data::VaderZero.

getDictSize()

std::size_t crawlservpp::Data::Sentiment::getDictSize ( ) const

inline

Gets the number of dictionary entries.

Returns

Number of entries in the dictionary.

getEmojiNum()

std::size_t crawlservpp::Data::Sentiment::getEmojiNum ( ) const

inline

Gets the number of entries in the emoji dictionary.

Returns

Number of emojis in the dictionary.

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The documentation for this class was generated from the following file:

• Data/Sentiment.hpp