advas is a python module which provides algorithms for advanced search. These methods are mainly used in information retrieval and linguistics.

This package contains:

• statistical algorithms
• term frequency (tf)
• term frequency with stop list
• inverse document frequency (idf)
• retrieval status value (rsv)
• language detection
  • by keywords
• k-nearest neighbour algorithm (kNN)


• linguistic algorithms
• stemming algorithms
• table lookup stemmer
• n-gram stemmer
• successor variety stemmer using peak-and-plateau method
• synonym detection with the use of the OpenThesaurus (plain text version)


• sound-like methods
• soundex
• metaphone
• NYSIIS algorithm
• caverphone algorithm (version 2.0)


• ranking methods
• a simple descriptor-based ranking algorithm


• text search algorithms
  • Knuth-Morris-Pratt