Document processing and retrieval: texpros
Document Processing and Retrieval: TEXPROS focuses on the design and implementation of a personal, customizable office information and document processing system called TEXPROS (a TEXt PROcessing System). TEXPROS is a personal, intelligent office information and document processing system for text-oriented documents. This system supports the storage, classification, categorization, retrieval and reproduction of documents, as well as extracting, browsing, retrieving and synthesizing information from a variety of documents. When using TEXPROS in a multi-user or distributed environment, it requires specific protocols for extracting, storing, transmitting and exchanging information. The authors have used a variety of techniques to implement TEXPROS, such as Object-Oriented Programming, Tcl/Tk, X-Windows, etc. The system can be used for many different purposes in many different applications, such as digital libraries, software documentation and information delivery. Audience: Provides in-depth, state-of-the-art coverage of information processing and retrieval, and documentation for such professionals as database specialists, information systems and software developers, and information providers.
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DATA MODEL AND ALGEBRA
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algebraic query algorithm associated digraph block Cartesian product conceptual structure conjunctive query graph contains content structure corresponding criteria DAG folder organization data model database defined denoted depends-on describes document classification document filing document sample trees document type hierarchy document type trees edge edit distance empty answer example filing organization filing path FName folder f folder substitution follows formal query frame template ft frame template substitutions G(TO global predicates index terms information extraction instantiation is-a John Smith keyterm L-S-Tree layout structure lexical analysis LName logical M.S. Students memo node content object network Office Documents operation original query Ph.D primitive predicate terms qualifying examination relational algebra relationship represented rules satisfy schema Section semantic Sender sentence shown in Figure specifies Steve Smith subqueries system catalog system frame instances testing document TEXPROS thematic object thematic roles thesaurus topic totally hierarchical transitive closure tuple unstructured user's vague queries