Keyword spices: A new method for building domain-specific web search engines

Satoshi Oyama, Takashi Kokubo, Toru Ishida, Teruhiro Yamada, Yasuhiko Kitamura

Research output: Contribution to journalConference articlepeer-review

21 Citations (Scopus)


This paper presents a new method for building domain-specific web search engines. Previous methods eliminate irrelevant documents from the pages accessed using heuristics based on human knowledge about the domain in question. Accordingly, they are hard to build and can not be applied to other domains. The keyword spice method, in contrast, improves search performance by adding domain-specific keywords, called keyword spices, to the user's input query; the modified query is then forwarded to a general-purpose search engine. Keyword spices can be effectively discovered automatically from web documents allowing us to build high quality domain-specific search engines in various domains without requiring the collection of heuristic knowledge. We describe a machine learning algorithm, which is a type of decision-tree learning algorithm, that can extract keyword spices. To demonstrate the value of the proposed approach, we conduct experiments in the domain of cooking. The results confirm the excellent performance of our method in terms of both precision and recall.

Original languageEnglish
Pages (from-to)1457-1463
Number of pages7
JournalIJCAI International Joint Conference on Artificial Intelligence
Publication statusPublished - 2001
Externally publishedYes
Event17th International Joint Conference on Artificial Intelligence, IJCAI 2001 - Seattle, WA, United States
Duration: 2001 Aug 42001 Aug 10

ASJC Scopus subject areas

  • Artificial Intelligence


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