DSO at TREC-8: A Hybrid Algorithm for the Routing Task (1999)
| Citations: | 2 - 0 self |
BibTeX
@MISC{Ng99dsoat,
author = {Hwee Tou Ng and Huey Ting Ang and Wee Meng Soon},
title = {DSO at TREC-8: A Hybrid Algorithm for the Routing Task},
year = {1999}
}
Bookmark
 |
 |
 |
 |
 |
 |
OpenURL
Abstract
In this paper, we describe a new hybrid algorithm that we used for the routing task at TREC-8. The algorithm combines the use of Rocchio's formula for term selection, and an improved variant of the perceptron learning algorithm for tuning the term weights. This algorithm is able to give good performance on TREC-8 test data. We also achieved a slight improvement in average uninterpolated precision by using Dynamic Feedback Optimization (DFO) as another weight tuning algorithm and combining the ranked list generated by DFO with that of perceptron. 1 Introduction DSO is a rst-time participant in TREC. We only participated in the routing task at the TREC-8 ltering track. Broadly speaking, there are two popular approaches to the routing task. The rst approach uses the Rocchio algorithm (Rocchio, 1971), and has its root in the information retrieval community. Recently, a number of extensions have been made to this approach. These include the use of better document representation ...
