Static Pruning of Terms in Inverted Files

This paper addresses the problem of identifying collection dependent stop-words in order to reduce the size of inverted files. We present four methods to automatically recognise stop-words, analyse the tradeoff between efficiency and effectiveness, and compare them with a previous pruning approach. The experiments allow us to conclude that in some situations stop-words pruning is competitive with respect to other inverted file reduction techniques.

• Type: Conference
• Year: 2007
• Where: ECIR
• Authors: Roi Blanco, Alvaro Barreiro
• Keywords: Collection Dependent Stop-words, ECIR 2007, Information Technology, Inverted file, Pruning