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- Title
Feature Selection Using Harmony Search for Script Identification from Handwritten Document Images.
- Authors
Singh, Pawan Kumar; Das, Supratim; Sarkar, Ram; Nasipuri, Mita
- Abstract
The feature selection process can be considered a problem of global combinatorial optimization in machine learning, which reduces the irrelevant, noisy, and non-contributing features, resulting in acceptable classification accuracy. Harmony search algorithm (HSA) is an evolutionary algorithm that is applied to various optimization problems such as scheduling, text summarization, water distribution networks, vehicle routing, etc. This paper presents a hybrid approach based on support vector machine and HSA for wrapper feature subset selection. This approach is used to select an optimized set of features from an initial set of features obtained by applying Modified log-Gabor filters on prepartitioned rectangular blocks of handwritten document images written in either of 12 official <italic>Indic</italic> scripts. The assessment justifies the need of feature selection for handwritten script identification where local and global features are computed without knowing the exact importance of features. The proposed approach is also compared with four well-known evolutionary algorithms, <italic>namely</italic> genetic algorithm, particle swarm optimization, tabu search, ant colony optimization, and two statistical feature dimensionality reduction techniques, <italic>namely</italic> greedy attribute search and principal component analysis. The acquired results show that the optimal set of features selected using HSA gives better accuracy in handwritten script recognition.
- Subjects
COMBINATORIAL optimization; MACHINE learning; SEARCH algorithms; GENETIC algorithms; SUPPORT vector machines
- Publication
Journal of Intelligent Systems, 2018, Vol 21, Issue 3, p465
- ISSN
0334-1860
- Publication type
Article
- DOI
10.1515/jisys-2016-0070