Previous on-line index maintenance strategies are mainly designed for document insertions without considering document deletions. In a truly dynamic search environment, however, documents may be...
TREC 2004 Web Track Experiments at CAS-ICT (2008)
Zhaotao Zhou, Yan Guo, Bin Wang, Xueqi Cheng, Hongbo Xu, Gang Zhang
Abstract: This report presents CAS-ICT’s experiments on the Mixed query task of the TREC2004 Web track. Our work focused on combining different Web page evidences together to improve the overall...
TREC-10 Experiments at CAS-ICT: Filtering, Web and QA (2008)
Bin Wang, Hongbo Xu, Zhifeng Yang, Yue Liu, Xueqi Cheng, Dongbo Bu, ...
CAS-ICT took part in the TREC conference for the first time this year. We have participated in three tracks of TREC-10. For adaptive filtering track, we paid more attention to feature selection and...
AN EFFICIENT GLOBAL OPTIMIZATION APPROACH FOR ROUGH SET BASED DIMENSIONALITY REDUCTION (2006)
Songbo Tan, Xueqi Cheng, Hongbo Xu
Abstract. The theory of rough set, proposed by Pawlak, provides a formal tool for knowledge discovery from imprecise and incomplete data. Dimensionality reduction (RED) is a crucial problem for rough...
A novel refinement approach for text categorization (2005)
Songbo Tan, Xueqi Cheng, Moustafa M. Ghanem, Bin Wang, Hongbo Xu
In this paper we present a novel strategy, DragPushing, for improving the performance of text classifiers. The strategy is generic and takes advantage of training errors to successively refine the...
Efficient algorithms for attributes reduction problem (2005)
Abstract. The theory of rough set, proposed by Pawlak, provides a formal tool for knowledge discovery from imprecise and incomplete data. Attributes reduction is a crucial problem for rough set based...
TREC 2003 Question Answering Track at CAS-ICT, Notebook of Text REtrieval Conference 2003 (2003)
In our system, we make use of Chunk information to analyze the question. A multilevel method is fulfilled to retrieve a candidate Bi-sentence. As to answer selecting, we proposed a voting method. We...
TREC 2003 Question Answering Track at CAS-ICT, Notebook of Text REtrieval Conference 2003 (2003)
In our system, we make use of Chunk information to analyze the question. A multilevel method is fulfilled to retrieve candidate Bi-sentences. As to answer selecting, we proposed a voting method. We...
TREC-11 experiments at CAS-ICT: Filtering and web (2002)
Hongbo Xu, Zhifeng Yang, Bin Wang, Bin Liu, Jun Cheng, Yue Liu, ...
TREC-11 experiments at CAS-ICT: Filtering and web (2002)
Hongbo Xu, Zhifeng Yang, Bin Wang, Bin Liu, Jun Cheng, Yue Liu, ...
CAS-ICT took part in the TREC conference for the second time this year and we undertook two tracks of TREC-11. For filtering track, we have submitted results of all three subtasks. In adaptive...