HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Conference papers

Exploring the Space of IR Functions

Abstract : In this paper we propose an approach to discover functions for IR ranking from a space of simple closed-form mathematical func-tions. In general, all IR ranking models are based on two basic variables, namely, term frequency and document frequency. Here a grammar for generating all possible functions is defined which consists of the two above said variables and basic mathematical operations -addition, sub-traction, multiplication, division, logarithm, exponential and square root. The large set of functions generated by this grammar is filtered by check-ing mathematical feasibility and satisfiability to heuristic constraints on IR scoring functions proposed by the community. Obtained candidate functions are tested on various standard IR collections and several sim-ple but highly efficient scoring functions are identified. We show that these newly discovered functions are outperforming other state-of-the-art IR scoring models through extensive experimentation on several IR collections. We also compare the performance of functions satisfying IR constraints to those which do not, and show that the former set of func-tions clearly outperforms the latter one 3 .
Complete list of metadata

Cited literature [20 references]  Display  Hide  Download

Contributor : Massih-Reza Amini Connect in order to contact the contributor
Submitted on : Tuesday, February 24, 2015 - 2:14:05 PM
Last modification on : Tuesday, November 16, 2021 - 4:19:25 AM
Long-term archiving on: : Tuesday, May 26, 2015 - 5:40:50 PM


Files produced by the author(s)



Parantapa Goswami, Simon Moura, Eric Gaussier, Massih-Reza Amini, Francis Maes. Exploring the Space of IR Functions. 36th European Conference on Information Retrieval, Apr 2014, Amsterdam, Netherlands. pp.372 - 384, ⟨10.1007/978-3-319-06028-6_31⟩. ⟨hal-01118844⟩



Record views


Files downloads