PHP

PHP HashMap Implementation

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A few days ago I have started working on a PHP library for algorithms and data structures. PHPAlgorithms is still in progress and thus has a early beta status. But today, I have pushed the first data structure which is nearly full done: PHP HashMap Implementation. A HashMap is characterized among others by its key-value … read more …

TF-IDF keyword extraction

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For my masters thesis I have researched Content-Based Recommendation and extracting keywords – namely: TF-IDF keyword extraction – as a part of it in detail. One interesting point regarding to keyword extraction is the “quality” of keywords, meaning that if a keyword is descriptive for a document or not. TF-IDF Definition For TF-IDF keyword extraction … read more …