Retrieval from hierarchical texts by partial patterns

  • Authors:
  • Pekka Kilpeläinen;Heikki Mannila

  • Affiliations:
  • -;-

  • Venue:
  • SIGIR '93 Proceedings of the 16th annual international ACM SIGIR conference on Research and development in information retrieval
  • Year:
  • 1993

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Abstract

Structured texts (for example dictionaries and user manuals) typically have a heirarchical (tree-like) structure. We describe a query language for retrieving information from collections of hierarchical text. The language is based on a tree pattern matching notion called tree inclusion. Tree inclusion allows easy expression of queries that use the structure and the content of the document. In using it a user need not be aware of the whole structure of the database. Thus a language based on tree inclusion is data independent, a property made necessary because of the great variance in the structure of the texts.