ofxAddons
An openframeworks library to do tf–idf. Tf-idf is short for term frequency–inverse document frequency, it is a numerical statistic that is intended to reflect how important a word is to a document in a collection or corpus.
README
Name : ofxTFIDF Library
Author : Noah Shibley, http://socialhardware.net
Date : July 28th, 2014
Version : 0.1
Notes : An addon for openframeworks to do TF-IDF
Dependencies: openframeworks------------------------------------------------------
Function list:
void loadDocsToMap(string filePath,string fileExt,string splitChar); //store each txt doc as a word map object
void scoreWords(); //look at words in map object and score the words via id-tf
void printAllScores(bool toggle) //Print detailed scoring for every word.
docScoreList //A vector of vectors containing a final idtf scores for each document.
Example:
Step 1. in the testApp.h: ``
cpp include "ofxTFIDF.h"
ofxTFIDF wordFreq;
Step 2. in the testApp.cpp:
cpp wordFreq.printAllScores(false); //set to true to see detailed scoring per word. wordFreq.loadDocsToMap("articles","txt"," "); //articles path, txt extension, split words by space. wordFreq.scoreWords();
//Print the top 5 highest scores per document. for(int i=0;i<wordFreq.docScoreList.size();i++) { vector < pair<string,float> > wordDocScore; //map for storing scores of individual document wordDocScore = wordFreq.docScoreList.at(i); //print only 5 top scores for(int j=0;j<5;j++) { cout << j+1 << ". " << wordDocScore.at(j).first << " " << wordDocScore.at(j).second << endl; } cout << "--------------------" << endl; } ``