Feature Ranking Techniques For 3D ATS Drug Molecular Structure Identification

Existing laboratory analysis techniques of ATS drug identification have their challenges which include the cost of training expert operators, the cost of acquired materials, and the dangers involved in operating the experiments. Furthermore, with the constantly emerging of the new ATS drugs design i...

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Main Author:	Saw, Yee Ching
Format:	Thesis
Language:	English English
Published:	2018
Subjects:	Q Science (General) QA Mathematics
Online Access:	http://eprints.utem.edu.my/id/eprint/23334/1/Feature%20Ranking%20Techniques%20For%203D%20ATS%20Drug%20Molecular%20Structure%20Identification.pdf http://eprints.utem.edu.my/id/eprint/23334/2/Feature%20Ranking%20Techniques%20For%203D%20ATS%20Drug%20Molecular%20Structure%20Identification.pdf
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id	my-utem-ep.23334
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institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
advisor	Muda@Draman, Azah Kamilah
topic	Q Science (General) QA Mathematics
spellingShingle	Q Science (General) QA Mathematics Saw, Yee Ching Feature Ranking Techniques For 3D ATS Drug Molecular Structure Identification
description	Existing laboratory analysis techniques of ATS drug identification have their challenges which include the cost of training expert operators, the cost of acquired materials, and the dangers involved in operating the experiments. Furthermore, with the constantly emerging of the new ATS drugs design into the illicit market, it serves as a challenge to the comprehensive analytical method to detect and validate these compounds. This research is aimed to propose a computational intelligence approach in assisting the analysis phase of ATS drug identification process. The dataset namely ATS drugs 3D molecular structure representation dataset was analyzed. It consists of 7212 sample records associated with 1185 features. This research has investigated numerous complexities and uncertainties that have embedded in the dataset in the form of high dimensionality and existence of irrelevant and noisy features. These challenges motivated this research to tackle these problems by reduce the dimensionality of the dataset and selecting the significant subset of features from the dataset. Hence, this led to the proposal of a feature selection approach for removing the irrelevant and noisy data and selecting a feature subset which best represent the ATS drug and produce a better identification performance. The proposed feature selection approach has a simple algorithmic framework and makes use of the existing feature selection techniques to cater different variety of data issues, namely Ensemble Filter-Embedded Feature Ranking Approach (FEFR). This proposed approach is performed in two main phases. The first phase is to carry out a thorough analysis of the effectiveness and capability of various feature ranking techniques in ATS drug identification. Six feature ranking techniques were used: Information Gain (IG), Gain Ratio (GR), Symmetrical Uncertainty (SU), Support vector machine based recursive feature elimination (SVM-RFE), and Variable Importance based random forest (VI-RF). The selected feature subset by each of the selected feature ranking technique were run through five different popular classifiers: Random forest (RF), Naïve Bayes (NB), IBK, Sequential Minimal Optimization (SMO), J48, and their performances were analyzed and compared. Experiments on the dataset showed that ReliefF and VIRF performed the best among the other techniques in retaining the significant features and eliminate the irrelevant features. For the second phase, the results of these two top performers in the analysis will be selected and aggregate to gain benefit from their advantages whilst minimize their shortcomings to yield a more reliable result. All the performance is evaluated in term of the number of features selected and classification accuracy. Paired t-test also carry out to further validated the quality of the FEFR based on the classification accuracy performance metric. The results show that the feature subset selected by the FEFR feature selection approach is either superior or at least as adequate as those subsets that selected by the individual feature ranking method and the original dataset.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Saw, Yee Ching
author_facet	Saw, Yee Ching
author_sort	Saw, Yee Ching
title	Feature Ranking Techniques For 3D ATS Drug Molecular Structure Identification
title_short	Feature Ranking Techniques For 3D ATS Drug Molecular Structure Identification
title_full	Feature Ranking Techniques For 3D ATS Drug Molecular Structure Identification
title_fullStr	Feature Ranking Techniques For 3D ATS Drug Molecular Structure Identification
title_full_unstemmed	Feature Ranking Techniques For 3D ATS Drug Molecular Structure Identification
title_sort	feature ranking techniques for 3d ats drug molecular structure identification
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty Of Information And Communication Technology
publishDate	2018
url	http://eprints.utem.edu.my/id/eprint/23334/1/Feature%20Ranking%20Techniques%20For%203D%20ATS%20Drug%20Molecular%20Structure%20Identification.pdf http://eprints.utem.edu.my/id/eprint/23334/2/Feature%20Ranking%20Techniques%20For%203D%20ATS%20Drug%20Molecular%20Structure%20Identification.pdf
_version_	1747834037491204096
spelling	my-utem-ep.233342022-02-21T10:33:28Z Feature Ranking Techniques For 3D ATS Drug Molecular Structure Identification 2018 Saw, Yee Ching Q Science (General) QA Mathematics Existing laboratory analysis techniques of ATS drug identification have their challenges which include the cost of training expert operators, the cost of acquired materials, and the dangers involved in operating the experiments. Furthermore, with the constantly emerging of the new ATS drugs design into the illicit market, it serves as a challenge to the comprehensive analytical method to detect and validate these compounds. This research is aimed to propose a computational intelligence approach in assisting the analysis phase of ATS drug identification process. The dataset namely ATS drugs 3D molecular structure representation dataset was analyzed. It consists of 7212 sample records associated with 1185 features. This research has investigated numerous complexities and uncertainties that have embedded in the dataset in the form of high dimensionality and existence of irrelevant and noisy features. These challenges motivated this research to tackle these problems by reduce the dimensionality of the dataset and selecting the significant subset of features from the dataset. Hence, this led to the proposal of a feature selection approach for removing the irrelevant and noisy data and selecting a feature subset which best represent the ATS drug and produce a better identification performance. The proposed feature selection approach has a simple algorithmic framework and makes use of the existing feature selection techniques to cater different variety of data issues, namely Ensemble Filter-Embedded Feature Ranking Approach (FEFR). This proposed approach is performed in two main phases. The first phase is to carry out a thorough analysis of the effectiveness and capability of various feature ranking techniques in ATS drug identification. Six feature ranking techniques were used: Information Gain (IG), Gain Ratio (GR), Symmetrical Uncertainty (SU), Support vector machine based recursive feature elimination (SVM-RFE), and Variable Importance based random forest (VI-RF). The selected feature subset by each of the selected feature ranking technique were run through five different popular classifiers: Random forest (RF), Naïve Bayes (NB), IBK, Sequential Minimal Optimization (SMO), J48, and their performances were analyzed and compared. Experiments on the dataset showed that ReliefF and VIRF performed the best among the other techniques in retaining the significant features and eliminate the irrelevant features. For the second phase, the results of these two top performers in the analysis will be selected and aggregate to gain benefit from their advantages whilst minimize their shortcomings to yield a more reliable result. All the performance is evaluated in term of the number of features selected and classification accuracy. Paired t-test also carry out to further validated the quality of the FEFR based on the classification accuracy performance metric. The results show that the feature subset selected by the FEFR feature selection approach is either superior or at least as adequate as those subsets that selected by the individual feature ranking method and the original dataset. 2018 Thesis http://eprints.utem.edu.my/id/eprint/23334/ http://eprints.utem.edu.my/id/eprint/23334/1/Feature%20Ranking%20Techniques%20For%203D%20ATS%20Drug%20Molecular%20Structure%20Identification.pdf text en public http://eprints.utem.edu.my/id/eprint/23334/2/Feature%20Ranking%20Techniques%20For%203D%20ATS%20Drug%20Molecular%20Structure%20Identification.pdf text en validuser http://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=112737 mphil masters Universiti Teknikal Malaysia Melaka Faculty Of Information And Communication Technology Muda@Draman, Azah Kamilah 1. Aha, D.W., Kibler, D., and Albert, M.K., 1991. Instance-Based Learning Algorithms, Machine learning. 6(1), pp.37.66. 2. 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