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ACM Transactions on Information Systems (TOIS), Volume 20 Issue 1, January 2002

PicASHOW: pictorial authority search by hyperlinks on the web

Pages: 1-24
DOI: 10.1145/503104.503105
We describe PicASHOW, a fully automated WWW image retrieval system that is based on several link-structure analyzing algorithms. Our basic premise is that a page p displays (or links to) an image when the author of p considers the image...

Knowledge encapsulation for focused search from pervasive devices
Yariv Aridor, David Carmel, Yoelle S. Maarek, Aya Soffer, Ronny Lempel
Pages: 25-46
DOI: 10.1145/503104.503106
Mobile knowledge seekers often need access to information on the Web during a meeting or on the road, while away from their desktop. A common practice today is to use pervasive devices such as Personal Digital Assistants or mobile phones. However,...

When experts agree: using non-affiliated experts to rank popular topics
Krishna Bharat, George A. Mihaila
Pages: 47-58
DOI: 10.1145/503104.503107
In response to a query, a search engine returns a ranked list of documents. If the query is about a popular topic (i.e., it matches many documents), then the returned list is usually too long to view fully. Studies show that users usually look at...

Query clustering using user logs

Pages: 59-81
DOI: 10.1145/503104.503108
Query clustering is a process used to discover frequently asked questions or most popular topics on a search engine. This process is crucial for search engines based on question-answering. Because of the short lengths of queries, approaches based on...

Efficient web browsing on handheld devices using page and form summarization

Pages: 82-115
DOI: 10.1145/503104.503109
We present a design and implementation for displaying and manipulating HTML pages on small handheld devices such as personal digital assistants (PDAs), or cellular phones. We introduce methods for summarizing parts of Web pages and HTML forms. Each...

Placing search in context: the concept revisited

Pages: 116-131
DOI: 10.1145/503104.503110
Keyword-based search engines are in widespread use today as a popular means for Web-based information retrieval. Although such systems seem deceptively simple, a considerable amount of skill is required in order to satisfy non-trivial information...