Path Set Operations for Clipping of Parts of Web Pages and Information Extraction from Web pages
نویسندگان
چکیده
It is attractive to extract parts of Web pages for the following two purposes. One is to clip parts of Web pages as we clip articles of newspapers. Another is to utilize information on Web pages by software. In this paper we define operations to extract parts of Web pages, namely path set operations. The operations are for both clipping of parts of Web pages and information extraction from Web pages. Web page clipping is extraction of parts of Web pages keeping their view information. Information extraction from Web pages is transformation of Web pages to tractable structures. We show that we can easily extract parts of Web pages for the two purposes by the operations, and also show that procedures based on the operations are somewhat robust against update of Web pages.
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