Sciweavers

ICTIR
2009
Springer
13 years 10 months ago
Score Distributions in Information Retrieval
We review the history of modeling score distributions, focusing on the mixture of normal-exponential by investigating the theoretical as well as the empirical evidence supporting i...
Avi T. Arampatzis, Stephen Robertson, Jaap Kamps
ICTIR
2009
Springer
13 years 10 months ago
Time-Sensitive Language Modelling for Online Term Recurrence Prediction
We address the problem of online term recurrence prediction: for a stream of terms, at each time point predict what term is going to recur next in the stream given the term occurre...
Dell Zhang, Jinsong Lu, Robert Mao, Jian-Yun Nie
ICTIR
2009
Springer
13 years 10 months ago
A New Measure of the Cluster Hypothesis
Abstract. We have found that the nearest neighbor (NN) test is an insufficient measure of the cluster hypothesis. The NN test is a local measure of the cluster hypothesis. Designer...
Mark D. Smucker, James Allan
ICTIR
2009
Springer
13 years 10 months ago
A Quantum-Based Model for Interactive Information Retrieval
Abstract Even the best information retrieval model cannot always identify the most useful answers to a user query. This is in particular the case with web search systems, where it ...
Benjamin Piwowarski, Mounia Lalmas
ICTIR
2009
Springer
13 years 10 months ago
Modeling the Score Distributions of Relevant and Non-relevant Documents
Empirical modeling of the score distributions associated with retrieved documents is an essential task for many retrieval applications. In this work, we propose modeling the releva...
Evangelos Kanoulas, Virgiliu Pavlu, Keshi Dai, Jav...
ICTIR
2009
Springer
13 years 10 months ago
Avoiding Bias in Text Clustering Using Constrained K-means and May-Not-Links
Abstract. In this paper we present a new clustering algorithm which ex
M. Eduardo Ares, Javier Parapar, Alvaro Barreiro
ICTIR
2009
Springer
13 years 10 months ago
Ranking List Dispersion as a Query Performance Predictor
Abstract. In this paper we introduce a novel approach for query performance prediction based on ranking list scores dispersion. Starting from the hypothesis that different score d...
Joaquín Pérez-Iglesias, Lourdes Arau...
ICTIR
2009
Springer
13 years 10 months ago
"A term is known by the company it keeps": On Selecting a Good Expansion Set in Pseudo-Relevance Feedback
Abstract. It is well known that pseudo-relevance feedback (PRF) improves the retrieval performance of Information Retrieval (IR) systems in general. However, a recent study by Cao ...
Raghavendra Udupa, Abhijit Bhole, Pushpak Bhattach...
ICTIR
2009
Springer
13 years 10 months ago
Semi-parametric and Non-parametric Term Weighting for Information Retrieval
Abstract. Most of the previous research on term weighting for information retrieval has focused on developing specialized parametric term weighting functions. Examples include TF.I...
Donald Metzler, Hugo Zaragoza