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ACM Transactions on Information Systems (TOIS), Volume 27 Issue 3, May 2009

Clusters, language models, and ad hoc information retrieval
Oren Kurland, Lillian Lee
Article No.: 13
DOI: 10.1145/1508850.1508851

The language-modeling approach to information retrieval provides an effective statistical framework for tackling various problems and often achieves impressive empirical performance. However, most previous work on language models for information...

Robust result merging using sample-based score estimates
Milad Shokouhi, Justin Zobel
Article No.: 14
DOI: 10.1145/1508850.1508852

In federated information retrieval, a query is routed to multiple collections and a single answer list is constructed by combining the results. Such metasearch provides a mechanism for locating documents on the hidden Web and, by use of sampling,...

SEA: Segment-enrich-annotate paradigm for adapting dialog-based content for improved accessibility
K. Selçuk Candan, Mehmet E. Dönderler, Terri Hedgpeth, Jong Wook Kim, Qing Li, Maria Luisa Sapino
Article No.: 15
DOI: 10.1145/1508850.1508853

While navigation within complex information spaces is a problem for all users, the problem is most evident with individuals who are blind who cannot simply locate, point, and click on a link in hypertext documents with a mouse. Users who are blind...

Semisupervised SVM batch mode active learning with applications to image retrieval
Steven C. H. Hoi, Rong Jin, Jianke Zhu, Michael R. Lyu
Article No.: 16
DOI: 10.1145/1508850.1508854

Support vector machine (SVM) active learning is one popular and successful technique for relevance feedback in content-based image retrieval (CBIR). Despite the success, conventional SVM active learning has two main drawbacks. First, the...

Bounded coordinate system indexing for real-time video clip search
Zi Huang, Heng Tao Shen, Jie Shao, Xiaofang Zhou, Bin Cui
Article No.: 17
DOI: 10.1145/1508850.1508855

Recently, video clips have become very popular online. The massive influx of video clips has created an urgent need for video search engines to facilitate retrieving relevant clips. Different from traditional long videos, a video clip is a short...

A novel framework for efficient automated singer identification in large music databases
Jialie Shen, John Shepherd, Bin Cui, Kian-Lee Tan
Article No.: 18
DOI: 10.1145/1508850.1508856

Over the past decade, there has been explosive growth in the availability of multimedia data, particularly image, video, and music. Because of this, content-based music retrieval has attracted attention from the multimedia database and information...