Browsing by Author "Chang, Wei-Wen"

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A hybrid immune-estimation distribution of algorithm for mining thyroid gland data
(2010-03-15)
Chang, Wei-Wen
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Yeh, Wei-Chang
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Huang, Pei-Chiao
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工業工程與管理學系
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Department of Industrial Engineering and Management
In this paper we combine the main concepts of estimation of distribution algorithms (EDAs) and immune algorithms (IAs) to be a hybrid algorithm called immune-estimation of distribution algorithms (IEDA). Both EDAs and IAs are extended from genetic algorithms (GAs). EDAs eliminate the genetic operation including crossover and mutation from the GAs and places more emphasis on the relation between gene loci. It adopts the distribution of selected individuals in search space and models the probability distributions to generate the next population. However, the primary gap of EDAs is lock of diversity between individuals. Hence, we introduce the IAs that is a new branch in computational intelligence. The main concepts of IAs are suppression and hypermutation that make the individuals be more diversity. Moreover, the primary gap of IAs is to pay no attention to the relation between individuals. Therefore, we combine the main concepts of two algorithms to improve the gaps each other. The classification risk of data mining is applied by this paper and compares the results between IEDA and general GAs in the experiments. We adopt the thyroid gland data set from LICI databases. Based on the obtained results, our research absolute is better than general GAs including accuracy, type I error and type 11 error. The results show not only the excellence of accuracy but also the robustness of the proposed algorithm. In this paper we have got high quality results which can be used as reference for hospital decision making and research workers. (C) 2009 Elsevier Ltd. All rights reserved.
Design of Employee Training in Taiwanese Nonprofits
(2015-02-01)
Chang, Wei-Wen
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Huang, Chun-Mam
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Kuo, Yung-Cheng
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通識教育中心
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Center of General Education
Workforce learning has become a fundamental need for organizations that face a quick-changing world growing more complicated by the day. In this study, we focused on an examination into the factors that affect the design of employee training in nonprofits, including a discussion into the training practices of nonprofits as a result of those factors. Smaller nonprofits in Taiwan were studied; larger nonprofits, such as the Red Cross and World Vision, were not included in the present study. Through interviews with and surveys of 20 participating nonprofits in Taiwan, we found that the widely used linear training design framework, including assessment, design, development, implementation, and evaluation, might not be appropriate for many nonprofits due to organizational factors such as human resources, financial environments, and managerial systems. Due to the influence of these factors, the practice of training in nonprofits has moved beyond structured design, and diverse on-the-job approaches are now being applied.