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Automatic generation of SGML content models \Lambda Helena Ahonen

Summary: Automatic generation of SGML content models \Lambda
Helena Ahonen
Department of Computer Science
University of Helsinki
P.O. Box 26 (Teollisuuskatu 23)
FIN­00014 University of Helsinki, Finland
E­mail: helena.ahonen@helsinki.fi
We study the problem of automatic generation of a document type definition (DTD) for
a set of Standard Generalized Markup Language (SGML) documents. We present various
situations where we have tagged documents but no DTD, and discuss the requirements
various applications may have with respect to the generation process. We also present an
automatic DTD generation tool that can be adjusted for several tasks necessary in the
applications. The method is also demonstrated with some experimental cases.
1 Introduction
An SGML (Standard Generalized Markup Language) [1] document has both tagging ,
i.e. all its elements are marked with begin and end tags, and a document type
definition (DTD) that describes the allowed structure of the document class in which
the document belongs. The basic components of a DTD are element declarations that
contain for each element a content model which in turn specifies the model group that


Source: Ahonen, Helena - Department of Computer Science, University of Helsinki


Collections: Computer Technologies and Information Sciences