jtejido

/**************************************************************************
**
**    Riemann-Siegel Formula for roots of Zeta(s) on critical line.
**
**************************************************************************
**    Matthew Kehoe
**    07/31/2015
**
**    This program finds the roots of Zeta(s) using the well known Riemann-
**    Siegel formula. The Riemann–Siegel theta function is approximated 

jtejido

<?php

namespace App\Utilities\Search;

use App\Library\InverseDocumentFrequency;
use App\Utilities\Search\TfIdfFeatureFactory;
use NlpTools\Documents\TrainingSet;


/**

jtejido

<?php

namespace App\Utilities\Search;

use App\Utilities\Search\BM25;
use NlpTools\Tokenizers\WhitespaceTokenizer;
use NlpTools\Documents\TrainingSet;
use NlpTools\Documents\TokensDocument;
use NlpTools\Utils\Normalizers\Normalizer;

jtejido

<?php

namespace App\Utilities;

use NlpTools\FeatureFactories\DataAsFeatures;
use NlpTools\Documents\TrainingSet;

class InverseDocumentFrequency
{

jtejido

<?php

namespace App\Library;

use NlpTools\Analysis\FreqDist;


class TermFrequency extends FreqDist
{

jtejido

<?php

namespace App\Utilities\Search;

use App\Library\TermFrequency;
use NlpTools\Documents\TrainingSet;


/**
 * BM25 is a class for ranking documents against a query.

jtejido

<?php
namespace App\Utilities;

/**
 * http://en.wikipedia.org/wiki/Tversky_index
 */

class TverskyIndex
{

jtejido

<?php
namespace App\Utilities;


/**
 * http://en.wikipedia.org/wiki/Sørensen–Dice_coefficient
 */

class DiceSimilarity
{

jtejido

<?php
namespace App\Utilities;


/**
 * https://en.wikipedia.org/wiki/Overlap_coefficient
 * AKA Szymkiewicz-Simpson coefficient
 */

class OverlapCoefficient

jtejido

<?php
namespace App\Utilities;


/**
 * This class implements the LevenshteinDistance distance of two strings or sets.
 * This accepts strings of arbitrary lengths.
 * 
 */