News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Ian Barber's Blog:
Alternative Term Weighting
November 09, 2009 @ 12:24:36

In this new post from Ian Barber he takes a look at something that can come in very handy when you need something a bit more complex than the standard search results - term weighting.

The term weighting and ranking function is at the core of any information retrieval system. The vector space model with the cosine similarity is maybe the best known and most widely used, but there are plenty of alternatives. We're looking at two here, the BM25 function based around a probabilistic model, and a function based around language modeling.

He's put together a few examples on some basic weighting practices - simple string evaluation based on word occurrence, using the Okapi/BM25 method and language modeling with a little bit of probability and scoring involved.

0 comments voice your opinion now!
alternative term weighting search


blog comments powered by Disqus

Similar Posts

Zend Developer Zone: Search Engine Friendly Websites with the Zend Framework

Ask About PHP: PHP's alternative syntax and why it’s useful

SitePoint PHP Blog: Using Solarium with SOLR for Search - Setup

Symfony Project Blog: Plugins have a new home

Zend Developer Zone: Whip Up a Yahoo! Mashup Using PHP


Community Events

Don't see your event here?
Let us know!


release example php7 library language opinion laravel5 version voicesoftheelephpant series extension install api introduction interview framework community podcast laravel unittest

All content copyright, 2015 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework