{"id":{"repo_id":"unlv","oai_identifier":"oai:oasis.library.unlv.edu:rtds-1409"},"canonical_url":"https://search.dev.ndltd.org/etd/unlv/oai:oasis.library.unlv.edu:rtds-1409","repository":{"repo_id":"unlv","name":"University of Nevada - Las Vegas","base_url":"https://oasis.library.unlv.edu/do/oai/"},"display":{"title":"An algebra for structured text","abstract":"The Standard Generalized Markup Language (SGML) is generally used to mark the logical structure of a document. In general, the structure information obtained from SGML documents can be used by an IR system to perform structure-level retrieval. In this thesis, we present a formal model and a modified version of Abiteboul and Beeri's complex object algebra to manipulate the content and structure of SGML documents. 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