Sequential extreme learning machines for class imbalance and concept drift
Class imbalance and concept drift are two problems commonly exist in sequential learning. A weighted online sequential extreme learning machine (WOS-ELM) algorithm is proposed that has a distinctive feature of class imbalance learning (CIL) in both the chunk-by-chunk and one-by-one modes. A new samp...
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sg-ntu-dr.10356-652902023-07-04T17:21:32Z Sequential extreme learning machines for class imbalance and concept drift Mirza Bilal Lin Zhiping School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Computer hardware, software and systems Class imbalance and concept drift are two problems commonly exist in sequential learning. A weighted online sequential extreme learning machine (WOS-ELM) algorithm is proposed that has a distinctive feature of class imbalance learning (CIL) in both the chunk-by-chunk and one-by-one modes. A new sample can update the classifier without waiting for a chunk to be completed. For CIL in drifting environments, a computationally efficient framework, referred to as ensemble of subset online sequential extreme learning machine is proposed. It comprises a main ensemble representing short-term memory, an information storage module representing long-term memory and a change detector to promptly detect concept drifts. A self-regulatory method, referred to as meta-cognitive online sequential extreme learning machine, is proposed to adapt the learning according to the nature of data stream i.e. select appropriate strategy for class imbalance and concept drift learning. A single OS-ELM equation is proposed for multiclass imbalance and concept drift learning. DOCTOR OF PHILOSOPHY (EEE) 2015-07-01T01:45:00Z 2015-07-01T01:45:00Z 2015 2015 Thesis Mirza Bilal. (2015). Sequential extreme learning machines for class imbalance and concept drift. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/65290 10.32657/10356/65290 en 146 p. application/pdf |
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DRNTU::Engineering::Electrical and electronic engineering::Computer hardware, software and systems Mirza Bilal Sequential extreme learning machines for class imbalance and concept drift |
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Class imbalance and concept drift are two problems commonly exist in sequential learning. A weighted online sequential extreme learning machine (WOS-ELM) algorithm is proposed that has a distinctive feature of class imbalance learning (CIL) in both the chunk-by-chunk and one-by-one modes. A new sample can update the classifier without waiting for a chunk to be completed. For CIL in drifting environments, a computationally efficient framework, referred to as ensemble of subset online sequential extreme learning machine is proposed. It comprises a main ensemble representing short-term memory, an information storage module representing long-term memory and a change detector to promptly detect concept drifts. A self-regulatory method, referred to as meta-cognitive online sequential extreme learning machine, is proposed to adapt the learning according to the nature of data stream i.e. select appropriate strategy for class imbalance and concept drift learning. A single OS-ELM equation is proposed for multiclass imbalance and concept drift learning. |
author2 |
Lin Zhiping |
author_facet |
Lin Zhiping Mirza Bilal |
format |
Theses and Dissertations |
author |
Mirza Bilal |
author_sort |
Mirza Bilal |
title |
Sequential extreme learning machines for class imbalance and concept drift |
title_short |
Sequential extreme learning machines for class imbalance and concept drift |
title_full |
Sequential extreme learning machines for class imbalance and concept drift |
title_fullStr |
Sequential extreme learning machines for class imbalance and concept drift |
title_full_unstemmed |
Sequential extreme learning machines for class imbalance and concept drift |
title_sort |
sequential extreme learning machines for class imbalance and concept drift |
publishDate |
2015 |
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https://hdl.handle.net/10356/65290 |
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1772827180092358656 |