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IJCNLP
2004
Springer
15 years 3 months ago
A Re-examination of IR Techniques in QA System
The performance of Information Retrieval in the Question Answering system is not satisfactory from our experiences in TREC QA Track. In this article, we take a comparative study t...
Yi Chang, Hongbo Xu, Shuo Bai
HIM
1997
Springer
126views Multimedia» more  HIM 1997»
15 years 1 months ago
A Model for Structured Document Retrieval: Empirical Investigations
Documents often display a structure, e.g., several sections, each with several subsections and so on. Taking into account the structure of a document allows the retrieval process ...
Mounia Lalmas, Ian Ruthven
GFKL
2006
Springer
108views Data Mining» more  GFKL 2006»
15 years 1 months ago
Identifying and Exploiting Ultrametricity
We begin with pervasive ultrametricity due to high dimensionality and/or spatial sparsity. How extent or degree of ultrametricity can be quantified leads us to the discussion of va...
Fionn Murtagh
SIGIR
2006
ACM
15 years 3 months ago
Is XML retrieval meaningful to users?: searcher preferences for full documents vs. elements
The aim of this study is to investigate whether element retrieval (as opposed to full-text retrieval) is meaningful and useful for searchers when carrying out information-seeking ...
Birger Larsen, Anastasios Tombros, Saadia Malik
SIGIR
1995
ACM
15 years 1 months ago
Combining Multiple Evidence from Different Properties of Weighting Schemes
It has been known that using different representations of either queries or documents, or different retrieval techniques retrieves different sets of documents. Recent work suggest...
Joon Ho Lee