SIGIR
2005
ACM
14 years 5 months ago
2005
ACM
Context influences the search process, but to date research has not definitively identified which aspects of context are the most influential for information retrieval, and thus a...
SIGIR
2005
ACM
14 years 5 months ago
2005
ACM
Non-negative Matrix Factorization (NMF, [5]) and Probabilistic Latent Semantic Analysis (PLSA, [4]) have been successfully applied to a number of text analysis tasks such as docum...
SIGIR
2005
ACM
14 years 5 months ago
2005
ACM
This paper presents a new discriminative model for information retrieval (IR), referred to as linear discriminant model (LDM), which provides a flexible framework to incorporate a...
SIGIR
2005
ACM
14 years 5 months ago
2005
ACM
In this paper, we propose a novel dependency language modeling approach for information retrieval. The approach extends the existing language modeling approach by relaxing the ind...
SIGIR
2005
ACM
14 years 5 months ago
2005
ACM
SIGIR
2005
ACM
14 years 5 months ago
2005
ACM
In this poster we describe alternative inverted index structures that reduce the time required to process queries, produce a higher query throughput and still return high quality ...
SIGIR
2005
ACM
14 years 5 months ago
2005
ACM
Existing retrieval models generally do not offer any guarantee for optimal retrieval performance. Indeed, it is even difficult, if not impossible, to predict a model’s empirica...
SIGIR
2005
ACM
14 years 5 months ago
2005
ACM
Summative evaluation methods for supervised adaptive topic tracking systems convolve the effect of system decisions on present utility with the effect on future utility. This pa...
SIGIR
2005
ACM
14 years 5 months ago
2005
ACM
To investigate the nature of people’s understandings for how search engines work, we collected data from 232 undergraduate and graduate students. Students were asked to “draw ...
SIGIR
2005
ACM
14 years 5 months ago
2005
ACM
State-of-the-art question answering (QA) systems employ termdensity ranking to retrieve answer passages. Such methods often retrieve incorrect passages as relationships among ques...