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An Exploratory Comparison of B-RAAM and RAAM Architectures
University of Skövde, Department of Computer Science.
2003 (English)Independent thesis Advanced level (degree of Master (One Year))Student thesis
Abstract [en]

Artificial intelligence is a broad research area and there are many different reasons why it is interesting to study artificial intelligence. One of the main reasons is to understand how information might be represented in the human brain. The Recursive Auto Associative Memory (RAAM) is a connectionist architecture that with some success has been used for that purpose since it develops compact distributed representations for compositional structures.

A lot of extensions to the RAAM architecture have been developed through the years in order to improve the performance of RAAM; Bi coded RAAM (B-RAAM) is one of those extensions. In this work a modified B-RAAM architecture is tested and compared to RAAM regarding: Training speed, ability to learn with smaller internal representations and generalization ability. The internal representations of the two network models are also analyzed and compared. This dissertation also includes a discussion of some theoretical aspects of B-RAAM.

It is found here that the training speed for B-RAAM is considerably lower than RAAM, on the other hand, RAAM learns better with smaller internal representations and is better at generalize than B-RAAM. It is also shown that the extracted internal representation of RAAM reveals more structural information than it does for B-RAAM. This has been shown by hieratically cluster the internal representation and analyse the tree structure. In addition to this a discussion is added about the justifiability to label B-RAAM as an extension to RAAM.

Place, publisher, year, edition, pages
Skövde: Institutionen för datavetenskap , 2003. , 70 p.
Keyword [en]
Artificial intelligence, Bi coded RAAM, RAAM, B-RAAM, Artificial neural network
National Category
Computer Science
Identifiers
URN: urn:nbn:se:his:diva-816OAI: oai:DiVA.org:his-816DiVA: diva2:3227
Presentation
(English)
Uppsok
Technology
Supervisors
Available from: 2008-02-15 Created: 2008-02-15 Last updated: 2009-10-19

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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More styles
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  • de-DE
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  • Other locale
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Output format
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