The Effect of Query Length on Normalisation in Information Retrieval

Document length normalisation is known to be a difficult problem in IR, as tuning is often needed to overcome the collection dependence problem known to affect many normalisation schemes. Furthermore, it has been shown in various studies that the most optimal level of normalisation to apply is correlated with query length. In this paper, we confirm this correlation and present experiments which investigates the effect of query length on normalisation.

• Type: Journal
• Year: 2009
• Where: AICS
• Authors: Ronan Cummins, Colm O'Riordan
• Keywords: AICS 2009, Artificial Intelligence, Collection Dependence Problem, Document Length Normalisation, Query Length