A Novel Performance Metric for Building an Optimized Classifier
Problem statement: Typically, the accuracy metric is often applied for optimizing the heuristic or stochastic classification models. However, the use of accuracy metric might lead the searching process to the sub-optimal solutions due to its less discriminating values and it is also not robust to...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Science Publications
2011
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/3432/ http://ir.unimas.my/id/eprint/3432/1/A%20Novel%20Performance%20Metric%20for%20Building%20an%20Optimized%20Classifier.pdf |
| _version_ | 1848835214810284032 |
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| author | Hossin, M. Sulaiman, M.N Mustapha, A. Mustapha , N. |
| author_facet | Hossin, M. Sulaiman, M.N Mustapha, A. Mustapha , N. |
| author_sort | Hossin, M. |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | Problem statement: Typically, the accuracy metric is often applied for optimizing the
heuristic or stochastic classification models. However, the use of accuracy metric might lead the
searching process to the sub-optimal solutions due to its less discriminating values and it is also not
robust to the changes of class distribution. Approach: To solve these detrimental effects, we propose a
novel performance metric which combines the beneficial properties of accuracy metric with the
extended recall and precision metrics. We call this new performance metric as Optimized Accuracy
with Recall-Precision (OARP). Results: In this study, we demonstrate that the OARP metric is
theoretically better than the accuracy metric using four generated examples. We also demonstrate
empirically that a naïve stochastic classification algorithm, which is Monte Carlo Sampling (MCS)
algorithm trained with the OARP metric, is able to obtain better predictive results than the one trained
with the conventional accuracy metric. Additionally, the t-test analysis also shows a clear advantage of
the MCS model trained with the OARP metric over the accuracy metric alone for all binary data sets.
Conclusion: The experiments have proved that the OARP metric leads stochastic classifiers such as
the MCS towards a better training model, which in turn will improve the predictive results of any
heuristic or stochastic classification models. |
| first_indexed | 2025-11-15T06:04:19Z |
| format | Article |
| id | unimas-3432 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:04:19Z |
| publishDate | 2011 |
| publisher | Science Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-34322015-09-18T07:15:16Z http://ir.unimas.my/id/eprint/3432/ A Novel Performance Metric for Building an Optimized Classifier Hossin, M. Sulaiman, M.N Mustapha, A. Mustapha , N. AC Collections. Series. Collected works Problem statement: Typically, the accuracy metric is often applied for optimizing the heuristic or stochastic classification models. However, the use of accuracy metric might lead the searching process to the sub-optimal solutions due to its less discriminating values and it is also not robust to the changes of class distribution. Approach: To solve these detrimental effects, we propose a novel performance metric which combines the beneficial properties of accuracy metric with the extended recall and precision metrics. We call this new performance metric as Optimized Accuracy with Recall-Precision (OARP). Results: In this study, we demonstrate that the OARP metric is theoretically better than the accuracy metric using four generated examples. We also demonstrate empirically that a naïve stochastic classification algorithm, which is Monte Carlo Sampling (MCS) algorithm trained with the OARP metric, is able to obtain better predictive results than the one trained with the conventional accuracy metric. Additionally, the t-test analysis also shows a clear advantage of the MCS model trained with the OARP metric over the accuracy metric alone for all binary data sets. Conclusion: The experiments have proved that the OARP metric leads stochastic classifiers such as the MCS towards a better training model, which in turn will improve the predictive results of any heuristic or stochastic classification models. Science Publications 2011 Article NonPeerReviewed text en http://ir.unimas.my/id/eprint/3432/1/A%20Novel%20Performance%20Metric%20for%20Building%20an%20Optimized%20Classifier.pdf Hossin, M. and Sulaiman, M.N and Mustapha, A. and Mustapha , N. (2011) A Novel Performance Metric for Building an Optimized Classifier. Journal of Computer Science 7 (4) : 582-590, 2011, 7 (4). pp. 582-590. http://www.thescipub.com/abstract/10.3844/jcssp.2011.582.590 DOI : 10.3844/jcssp.2011.582.590 |
| spellingShingle | AC Collections. Series. Collected works Hossin, M. Sulaiman, M.N Mustapha, A. Mustapha , N. A Novel Performance Metric for Building an Optimized Classifier |
| title | A Novel Performance Metric for Building an Optimized Classifier |
| title_full | A Novel Performance Metric for Building an Optimized Classifier |
| title_fullStr | A Novel Performance Metric for Building an Optimized Classifier |
| title_full_unstemmed | A Novel Performance Metric for Building an Optimized Classifier |
| title_short | A Novel Performance Metric for Building an Optimized Classifier |
| title_sort | novel performance metric for building an optimized classifier |
| topic | AC Collections. Series. Collected works |
| url | http://ir.unimas.my/id/eprint/3432/ http://ir.unimas.my/id/eprint/3432/ http://ir.unimas.my/id/eprint/3432/ http://ir.unimas.my/id/eprint/3432/1/A%20Novel%20Performance%20Metric%20for%20Building%20an%20Optimized%20Classifier.pdf |