Takakazu Imada

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This paper proposes to utilize a search engine as a social sensor which is to be used for predicting market shares. More specifically, this paper studies a task of comparing rates of concerns of those who search for Web pages among several companies which supply products, given a specific products domain. In this paper, we measure concerns of those who(More)
In this paper, we address the issue of how to overview the knowledge of a given query keyword. We especially focus on concerns of those who search for Web pages with a given query keyword, and study how to efficiently overview the whole list of Web search information needs of a given query keyword. First, we collect Web search information needs of a given(More)
In this paper, we address the issue of how to overview the knowledge of a given query keyword. We especially focus on concerns of those who search for Web pages with a given query keyword, and study how to efficiently overview the whole list of Web search information needs of a given query keyword. First, we collect Web search information needs of a given(More)
In this paper, we address the issue of how to overview the knowledge of a given query keyword. We especially focus on concerns of those who search for Web pages with a given query keyword, and study how to efficiently overview the whole list of Web search information needs of a given query keyword. First, we collect Web search information needs of a given(More)
This paper proposes to utilize a search engine as a social sensor which is to be used for predicting market shares. More specifically, this paper studies a task of comparing rates of concerns of those who search for Web pages among several companies which supply products, given a specific products domain. In this paper, we measure concerns of those who(More)
This paper first studies how to apply a topic model to Chinese and Japanese blog posts collected from a few hundred Chinese and Japanese bloggers and then to classify bloggers into topics. The estimated topics are exploited in the task of over viewing the Chinese and Japanese bloggers' concerns, opinions, and cultures. Those topics are also quite helpful(More)
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