Ontology-Based Information Extraction and Structuring

6/16/99


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Table of Contents

Ontology-Based Information Extraction and Structuring

Motivation

Solutions

Our Approach

Car-Ad Ontology

Fixed Processes

Ontology Parser

Constant/Keyword Recognizer

Database-Instance Generator

Heuristics

Keyword Proximity

Subsumed/Overlapping Constants

Functional Relationships

Nonfunctional Relationships

First Occurrence without Constraint Violation

Recall & Precision

Experimental Results Salt Lake Tribune

Trouble Spots

Contributions

Limitations

Future Work

Future Work (cont.)

Our Web Site

Other Domains

Job Listings Results Los Angeles Times

Obituaries Results Salt Lake Tribune

Obituaries Results Arizona Daily Star

Author: Stephen W. Liddle

Email: embley@cs.byu.edu

Home Page: http://www.deg.byu.edu

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