Publications
Authors:
  • St├ęphane Clinchant
Citation:
CIKM, Sheraton, Maui Hawaii, Oct 29-Nov 2, 2012.
Abstract:
We study the impact of concavity in IR models and propose
to use a generalized logarithm function, the -logarithm to
weight words in documents. We extend the family of infor-
mation based Information Retrieval (IR) models with this
function. We show that that concavity is indeed an impor-
tant property of IR models. Experiments conducted for IR
tasks, Latent Semantic Indexing and Text Categorization
show improvements.
Year:
2012
Report number:
2012/079