Affiliation:
1. Civil Engineering Department, NIT Silchar, Assam, India
Abstract
Abstract
The detection of appropriate homogeneous regions is an important step in regional frequency analysis with the determination of homogeneity depending to a great extent on the type of method used in grouping. So, the study considers a genetic-algorithm-based clustering method to identify homogeneous precipitation regions for 39 gauge stations of the north-eastern region of India. The performance evaluation is done using six cluster validation measures. Further, considering all the six indices together, selection for the optimum cluster is modelled as a multi-criteria decision making (MCDM) problem. Three MCDM methods, namely TOPSIS, WASPAS and VIKOR, are applied to obtain ranked clusters which are then subjected to a heterogeneity test using the L-moments approach. The results suggested the stations to be grouped into three homogeneous regions. Comparison with the k-means method indicated relatively better performance for genetic-algorithm-based clustering. Finally, an L-moment ratio diagram and goodness-of-fit measures were conducted to select regional frequency distributions for the identified homogeneous regions.
Subject
Water Science and Technology
Reference19 articles.
1. Regionalization of precipitation characteristics in the Canadian Prairie Provinces using large-scale atmospheric covariates and geophysical attributes;Stoch. Environ. Res. Risk Assess,2015
2. Regionalization of precipitation in Switzerland by means of principal component analysis;Theoret. Appl. Climatol.,1997
3. Regionalisation of daily rainfall in Kenya by means of common factor analysis;Journal of Climatology,1988
4. Blanca
A.
& CeballosM.2016MCDM: Multi-Criteria Decision Making Methods for Crisp Data. R Software Package, Version 1.2.
5. Regional analysis of maximum rainfall using L-moment and LQ-moment: a comparative case study for the North East India;International Journal of Applied Mathematics & Statistical Sciences,2016
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