Lexemic NPM | npm.io

lexemic

Requirements

Node.js (v0.10.17+)

Install

npm install lexemic

Description

Tools for working with human language data.

Features

Sentiment analysis
Stemming
Tokenizing
Statistical analysis

Usage

$ lexemic [command] [implementation] [target...]

NOTE: The target may be an inline string or the path to a text file encoded as UTF-8.

Sentiment analysis

$ lexemic sentiment "I am mad at you." # => {  
                                             :score -1,  
                                             :comparative -0.25,  
                                             :positive {  
                                                        :score 0,  
                                                        :comparative 0,  
                                                        :words ()  
                                                       },  
                                             :negative {  
                                                        :score 1,  
                                                        :comparative 0.25,  
                                                        :words (mad)  
                                                       }  
                                             }

Sentiment analysis attempts to determine the affective state of the speaker or the writer. The default implementation returns an EDN map of this analysis. The :score represents the number of emotive words in the text while the :comparative rates the occurrence of these words with regards to the length of the text. The nested values (i.e. those under :positive and :negative ) provide a list of matched :words and take only into account their respective affectivity. The top level values incorporate both affective states – returning negative values for texts with overall negative affects and positive values for texts with overall positive affects.