Title page for ETD etd-08012012-040438

Type of Document Master's Thesis
Author Weaver, Marybeth Therese
URN etd-08012012-040438
Title Implementing an intelligent information retrieval system :the CODER system, version 1.0
Degree Master of Science
Department Computer Science and Applications
Advisory Committee
Advisor Name Title
Fox, Edward Alan Committee Chair
Hix, Deborah S. Committee Member
Nutter, Jane Terry Committee Member
  • Information storage and retrieval systems
Date of Defense 1988-02-05
Availability restricted
For individuals requiring interactive access to online text, information storage and retrieval systems

provide a way to retrieve desired documents and/or text passages. The CODER (COmposite

Document Expert/effective/extended Retrieval) system is a testbed for determining how useful various

artificial intelligence techniques are for increasing the effectiveness of information storage and

retrieval systems. The system, designed previously, has three components: an analysis subsystem

for analyzing and storing document contents, a central spine for manipulation and storage of world

and domain knowledge, and a retrieval subsystem for matching user queries to relevant documents.

This thesis discusses the implementation of the retrieval subsystem and portions of the spine and

analysis subsystem. It illustrates that logic programming, specifically with the Prolog language, is

suitable for development of an intelligent information retrieval system. Furthermore, it shows that

system modularity provides a flexible research testbed, allowing many individuals to work on different

parts of the system which may later be quickly integrated.

The retrieval subsystem has been implemented in a modular fashion so that new approaches to

information retrieval can be easily compared to more traditional ones. A powerful knowledge

representation language, a comprehensive lexicon and individually tailored experts using standardized

blackboard modules for communication and control allowed rapid prototyping, incremental

development and ready adaptability to change. The system executes on a DEC VAX ll/785 running

ULTRIX™, a variant of 4.2 BSD UNIX. It has been implemented as a set of MU-Prolog

and C modules communicating through TCP/IP sockets.

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