CRL at Ntcir2
Abstract
We have developed systems of two types for NTCIR2. One is an enhenced version of the system we developed for NTCIR1 and IREX. It submitted retrieval results for JJ and CC tasks. A variety of parameters were tried with the system. It used such characteristics of newspapers as locational information in the CC tasks. The system got good results for both of the tasks. The other system is a portable system which avoids free parameters as much as possible. The system submitted retrieval results for JJ, JE, EE, EJ, and CC tasks. The system automatically determined the number of top documents and the weight of the original query used in automatic-feedback retrieval. It also determined relevant terms quite robustly. For EJ and JE tasks, it used document expansion to augment the initial queries. It achieved good results, except on the CC tasks.
Keywords
Cite
@article{arxiv.cs/0103013,
title = {CRL at Ntcir2},
author = {Masaki Murata and Masao Utiyama and Qing Ma and Hiromi Ozaku and Hitoshi Isahara},
journal= {arXiv preprint arXiv:cs/0103013},
year = {2007}
}
Comments
11 pages. Computation and Language. This paper describes our results of information retrieval in the NTCIR2 contest