Toshikazu Fukushima

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Knowing the reputations of your own and/or competitors' products is important for marketing and customer relationship management. It is, however, very costly to collect and analyze survey data manually. This paper presents a new framework for mining product reputations on the Internet. It automatically collects people's opinions about target products from(More)
Automatic extraction of human opinions from Web documents has been receiving increasing interest. To automate the process of opinion extraction, having a collection of evaluative expressions such as " the seats are comfortable " would be useful. However, it can be costly to manually create an exhaustive list of such expressions for many domains, because(More)
With proliferation of ubiquitous computing, digital access is facing an increasing risk since unauthorized client located at any place may intrude a local server. Location Based Access Control (LBAC) is a promising solution that tries to protect the client's access within some user-defined secure zones. Although a lot of prior work has focused on LBAC, most(More)
This paper proposes a novel approach to accurately searching Web pages for relevant information in problem solving by specifying a Web document category instead of the user's task. Accessing information from World Wide Web pages as an approach to problem solving has become commonplace. However, such a search is difficult with current search services, since(More)
BMIR-JP is the lirat complete Japanese test collection available for use in evaluating information retrieval systems. It contains sixty queries and the IDS of 5080 newspaper articles in the fields of economics and engineering. The queries are classified into five categories, based on the functions the system is likely to use to interpret them correctly and(More)
BMIR-J2 is the first complete test collection generally available for evaluating Japanese information retrieval systems. BMIR-J2 features include a novel division of search requests based on various functions required to perform successful retrieval. BMIR-J2 and its smaller predecessor BMIR-J1 were constructed by a volunteer-based working group under the(More)
In this paper, we evaluate two types of anchor texts: a page anchor and a site anchor. Since the anchor text tends to summarize information referred ahead, it can be expected that the terms appearing there have important meaning in information retrieval. We introduce a retrieval method to give high priority to the terms in the anchor text. In the(More)
This paper describes a novel search engine, WithAir that provides contents retrieval for i-mode, the most popular cell-phone service in Japan. WithAir allows users to complete typical search tasks with 4.4 keystrokes on average through keyword/purpose-predictive navigation. These two forms of navigation simplify, respectively, keyword input and search(More)