Type-1 and interval type-2 ANFIS: a comparison
In a previous paper, we proposed an extended ANFIS architecture and showed that interval type-2 ANFIS produced larger errors than type-1 ANFIS on the well-known IRIS classification problem. In this paper, more experiments on both synthetic and real-world data are conducted to further investigate and...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Published: |
2017
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| Online Access: | https://eprints.nottingham.ac.uk/41808/ |
| _version_ | 1848796357314215936 |
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| author | Chen, Chao John, Robert Twycross, Jamie Garibaldi, Jonathan M. |
| author_facet | Chen, Chao John, Robert Twycross, Jamie Garibaldi, Jonathan M. |
| author_sort | Chen, Chao |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In a previous paper, we proposed an extended ANFIS architecture and showed that interval type-2 ANFIS produced larger errors than type-1 ANFIS on the well-known IRIS classification problem. In this paper, more experiments on both synthetic and real-world data are conducted to further investigate and compare the performance of interval type-2 ANFIS and type-1 ANFIS. For each dataset, interval type-2 ANFIS is optimised in three different ways, including a strategy suggested by Mendel such that interval type-2 ANFIS would be no worse than type-1 ANFIS. Our results show that in some circumstances the performance of interval type-2 ANFIS can be improved when it is initialised with blurred optimised type-1 ANFIS parameters. However, in general, interval type-2 ANFIS does not produce a clear performance improvement compared to type-1 ANFIS, especially on Mackey-Glass data with large noise. Thus, we conclude that the choice of interval type-2 ANFIS over type-1 ANFIS should be carefully considered, since type-2 ANFIS is more computationally complex, yet significantly better performance cannot be easily obtained. |
| first_indexed | 2025-11-14T19:46:42Z |
| format | Conference or Workshop Item |
| id | nottingham-41808 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:46:42Z |
| publishDate | 2017 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-418082020-05-04T19:01:49Z https://eprints.nottingham.ac.uk/41808/ Type-1 and interval type-2 ANFIS: a comparison Chen, Chao John, Robert Twycross, Jamie Garibaldi, Jonathan M. In a previous paper, we proposed an extended ANFIS architecture and showed that interval type-2 ANFIS produced larger errors than type-1 ANFIS on the well-known IRIS classification problem. In this paper, more experiments on both synthetic and real-world data are conducted to further investigate and compare the performance of interval type-2 ANFIS and type-1 ANFIS. For each dataset, interval type-2 ANFIS is optimised in three different ways, including a strategy suggested by Mendel such that interval type-2 ANFIS would be no worse than type-1 ANFIS. Our results show that in some circumstances the performance of interval type-2 ANFIS can be improved when it is initialised with blurred optimised type-1 ANFIS parameters. However, in general, interval type-2 ANFIS does not produce a clear performance improvement compared to type-1 ANFIS, especially on Mackey-Glass data with large noise. Thus, we conclude that the choice of interval type-2 ANFIS over type-1 ANFIS should be carefully considered, since type-2 ANFIS is more computationally complex, yet significantly better performance cannot be easily obtained. 2017-08-24 Conference or Workshop Item PeerReviewed Chen, Chao, John, Robert, Twycross, Jamie and Garibaldi, Jonathan M. (2017) Type-1 and interval type-2 ANFIS: a comparison. In: 2017 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2017), 9-12 July 2017, Naples, Italy. http://ieeexplore.ieee.org/abstract/document/8015555/ |
| spellingShingle | Chen, Chao John, Robert Twycross, Jamie Garibaldi, Jonathan M. Type-1 and interval type-2 ANFIS: a comparison |
| title | Type-1 and interval type-2 ANFIS: a comparison |
| title_full | Type-1 and interval type-2 ANFIS: a comparison |
| title_fullStr | Type-1 and interval type-2 ANFIS: a comparison |
| title_full_unstemmed | Type-1 and interval type-2 ANFIS: a comparison |
| title_short | Type-1 and interval type-2 ANFIS: a comparison |
| title_sort | type-1 and interval type-2 anfis: a comparison |
| url | https://eprints.nottingham.ac.uk/41808/ https://eprints.nottingham.ac.uk/41808/ |