Haruko Ishikawa

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This paper gives an overview of the Informational Retrieval Task 2 that was conducted from 2003 to 2004 as a subtask of the WEB Task at the Fourth NTCIR Workshop (‘NTCIR-4 WEB’). In the Informational Retrieval Task, we attempted to assess the retrieval effectiveness of Web search engine systems from a viewpoint of topical relevance, and to build a re-usable(More)
This paper describes an overview of the Navigational Retrieval Subtask 2 that was conducted from 2004 to 2005 as a subtask of the WEB Task at the Fifth NTCIR Workshop. In the Subtask, we attempted to assess the retrieval effectiveness of web search systems from a viewpoint of “Known Item Search” using a common data set, and built a re-usable test(More)
This paper describes an overview of the Navigational Retrieval Task 1 that was conducted from 2002 to 2004 as a subtask of the WEB Task at the Fourth NTCIR Workshop. In the Task, we attempted to assess the retrieval effectiveness of Web search systems from a viewpoint of “Known Item Search” using a common data set, and built a re-usable test collection.(More)
The flow field and the energy transport near thermoacoustic couples are simulated using a 2D full Navier-Stokes solver. The thermoacoustic couple plate is maintained at a constant temperature; plate lengths, which are "short" and "long" compared with the particle displacement lengths of the acoustic standing waves, are tested. Also investigated are the(More)
An investigation into relationships among search methods, topic types, and styles of relevant Web pages was conducted using the "NTCIR-4 Web test collection for navigational retrieval", which was built for evaluating the retrieval effectiveness of Web search systems aiming to find representative Web pages of a given object. First, "known item search", the(More)
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