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The artificial immune system with evolved lymphocytes
Dissertation (MSc (Computer Science))--University of Pretoria, 2007.
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| Format: | Thesis |
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University of Pretoria
2013
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| _version_ | 1867613661935173632 |
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| access_status_str | Open Access |
| author2 | Engelbrecht, Andries P. |
| author_browse | Engelbrecht, Andries P. |
| author_facet | Engelbrecht, Andries P. |
| collection | Thesis |
| dc_rights_str_mv | © 2003, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Computer Science))--University of Pretoria, 2007. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/26053 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:39:42.090Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/26053 The artificial immune system with evolved lymphocytes Engelbrecht, Andries P. upetd@up.ac.za Graaff, A.J. (Alexander Jakobus) Positive selection Mature Memory Self Genetic algorithms Classification system Negative selection Artificial lymphocytes Non-self Affinity distance threshold Artificial immune system Life counter transition function UCTD Dissertation (MSc (Computer Science))--University of Pretoria, 2007. The main purpose of the natural immune system is to protect the body against any unwanted foreign cells that could infect the body and lead to devastating results. The nature immune system has different lymphocytes to detect and destroy these unwanted foreign patterns. The natural immune system can be modeled into an artificial immune system that can be used to detect any unwanted patterns in a non-biological environment. One of the main tasks of an immune system is to learn the structure of these unwanted patterns for a faster response to future foreign patterns with the same or similar structure. The artificial immune system (AIS) can therefore be seen as a pattern recognition system. The AIS contains artificial lymphocytes (ALC) that classify any pattern either as part of a predetermined set of patterns or not. In the immune system, lymphocytes have different states: Immature, Mature, Memory or Annihilated. Lymphocytes in the annihilated state needs to be removed from the active set of ALCs. The process of moving from one state to the next needs to be controlled in an efficient manner. This dissertation presents an AIS for detection of unwanted patterns with a dynamical active set of ALCs and proposes a threshold function to determine the state of an ALC. The AIS in the dissertation uses evolutionary computation techniques to evolve an optimal set of lymphocytes for better detection of unwanted patterns and removes ALCs in the annihilated state from the active set of ALCs. Computer Science unrestricted 2013-09-07T02:18:07Z 2007-07-04 2013-09-07T02:18:07Z 2003-11-10 2007-07-04 2007-07-04 Dissertation Graaff, A 2003, The artificial immune system with evolved lymphocytes, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/26053 > http://hdl.handle.net/2263/26053 http://upetd.up.ac.za/thesis/available/etd-07042007-140930/ © 2003, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf University of Pretoria |
| spellingShingle | Positive selection Mature Memory Self Genetic algorithms Classification system Negative selection Artificial lymphocytes Non-self Affinity distance threshold Artificial immune system Life counter transition function UCTD The artificial immune system with evolved lymphocytes |
| title | The artificial immune system with evolved lymphocytes |
| title_full | The artificial immune system with evolved lymphocytes |
| title_fullStr | The artificial immune system with evolved lymphocytes |
| title_full_unstemmed | The artificial immune system with evolved lymphocytes |
| title_short | The artificial immune system with evolved lymphocytes |
| title_sort | artificial immune system with evolved lymphocytes |
| topic | Positive selection Mature Memory Self Genetic algorithms Classification system Negative selection Artificial lymphocytes Non-self Affinity distance threshold Artificial immune system Life counter transition function UCTD |
| url | http://hdl.handle.net/2263/26053 http://upetd.up.ac.za/thesis/available/etd-07042007-140930/ |