Pub Date : 2011-02-02DOI: 10.1080/10170669.2010.548854
G. Grabarnik, L. Shwartz
This article discusses managing fulfillment of requests for services that have dependencies on common human and computing resources. The objective of this research is to minimize the duration of a group of requests that utilize partially overlapping sets of renewable resources. Minimizing the latency between the fulfillments is a critical design consideration in managing these requests. A reduction in latency could lead to the minimization of the total span of a group of requests, and is the key to achieving high levels of a resource's usage and cost-effective process management. It is evident that these latency problems must be either drastically reduced or effectively hidden. The approach described in this article is an interesting hybrid of the two, providing both the significant latency reduction, as well as the mechanism for hiding some of remaining delays.
{"title":"Managing service requests with common renewable resources","authors":"G. Grabarnik, L. Shwartz","doi":"10.1080/10170669.2010.548854","DOIUrl":"https://doi.org/10.1080/10170669.2010.548854","url":null,"abstract":"This article discusses managing fulfillment of requests for services that have dependencies on common human and computing resources. The objective of this research is to minimize the duration of a group of requests that utilize partially overlapping sets of renewable resources. Minimizing the latency between the fulfillments is a critical design consideration in managing these requests. A reduction in latency could lead to the minimization of the total span of a group of requests, and is the key to achieving high levels of a resource's usage and cost-effective process management. It is evident that these latency problems must be either drastically reduced or effectively hidden. The approach described in this article is an interesting hybrid of the two, providing both the significant latency reduction, as well as the mechanism for hiding some of remaining delays.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121626840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-02-02DOI: 10.1080/10170669.2010.548851
Regina W. Y. Wang, Ying-Chun Chen
This study proposes important factors in service dimensions for consumer emotions and conducts a survey by questionnaire. We present three findings. (1) The orders of the survey results in the percentage of sample number with “hue angle” of beverage packaging, emotions, and impulse buying desire all showing “analogous > contrasting > complementary.” (2) In the questionnaire survey of emotions and impulse buying desire, “medium color temperature,” yellow green/green “analogous,” and the combination of these best aroused positive valence and desire. (3) Positive emotion dimensions can better arouse consumers’ impulse buying desire compared with negative emotion dimensions. We hope the proposals for classifications of service dimensions for consumer emotions made in this article will make a contribution to both improving service quality and the research progress on consumer emotion-oriented design and service.
{"title":"Service dimensions for consumer emotions","authors":"Regina W. Y. Wang, Ying-Chun Chen","doi":"10.1080/10170669.2010.548851","DOIUrl":"https://doi.org/10.1080/10170669.2010.548851","url":null,"abstract":"This study proposes important factors in service dimensions for consumer emotions and conducts a survey by questionnaire. We present three findings. (1) The orders of the survey results in the percentage of sample number with “hue angle” of beverage packaging, emotions, and impulse buying desire all showing “analogous > contrasting > complementary.” (2) In the questionnaire survey of emotions and impulse buying desire, “medium color temperature,” yellow green/green “analogous,” and the combination of these best aroused positive valence and desire. (3) Positive emotion dimensions can better arouse consumers’ impulse buying desire compared with negative emotion dimensions. We hope the proposals for classifications of service dimensions for consumer emotions made in this article will make a contribution to both improving service quality and the research progress on consumer emotion-oriented design and service.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129461609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-02-02DOI: 10.1080/10170669.2010.548684
Jui-Chin Jiang, Yuan-ju Chou, P. Sun
Operations in Government bureaucracy have to follow the guidance of policy, laws, and restrictions. The Government staff often do not know which solution they should use when facing a management problem that needs decision-making and problem solving, which means that the project to be carried out may jeopardize other projects and cause contradiction, which may in turn lead to difficulty in executing the project. System innovative thinking has been considered effective in uncovering structural flaws that limit system performance and explaining why a well-intended policy intervention fails to produce expected results. This study proposes a new method of diagnosis and improvement design by using TRIZ for management. Furthermore, through examples of 40 inventive principles, a pattern of innovation perfectly matching the solutions for management is then built up. This research is considered as being available for further users to utilize for management problem solving.
{"title":"A new method of using TRIZ for problem solving and improvement design for a government department","authors":"Jui-Chin Jiang, Yuan-ju Chou, P. Sun","doi":"10.1080/10170669.2010.548684","DOIUrl":"https://doi.org/10.1080/10170669.2010.548684","url":null,"abstract":"Operations in Government bureaucracy have to follow the guidance of policy, laws, and restrictions. The Government staff often do not know which solution they should use when facing a management problem that needs decision-making and problem solving, which means that the project to be carried out may jeopardize other projects and cause contradiction, which may in turn lead to difficulty in executing the project. System innovative thinking has been considered effective in uncovering structural flaws that limit system performance and explaining why a well-intended policy intervention fails to produce expected results. This study proposes a new method of diagnosis and improvement design by using TRIZ for management. Furthermore, through examples of 40 inventive principles, a pattern of innovation perfectly matching the solutions for management is then built up. This research is considered as being available for further users to utilize for management problem solving.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123131268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-01-01DOI: 10.1080/10170669.2010.532347
W. Hsu, Hong-Fwu Yu
The economic ordering quantity (EOQ) model has been widely applied to inventory management. However, some assumptions in the model are unrealistic in practice. One of the assumptions is that all produced units are of good quality. This article deals with an EOQ model for products with imperfect quality under an announced price increase, where the defectives are screened out by a 100% inspection process, and which can be sold as a single batch at the end of the inspection process. The optimal ordering policies associated with three kinds of effective times of the price increase are obtained. A numerical example is then provided to illustrate the proposed model. Besides, based on the numerical example, the effects of some important parameters on the optimal order quantity and the corresponding saving in cost are also investigated.
{"title":"An EOQ model with imperfective quality items under an announced price increase","authors":"W. Hsu, Hong-Fwu Yu","doi":"10.1080/10170669.2010.532347","DOIUrl":"https://doi.org/10.1080/10170669.2010.532347","url":null,"abstract":"The economic ordering quantity (EOQ) model has been widely applied to inventory management. However, some assumptions in the model are unrealistic in practice. One of the assumptions is that all produced units are of good quality. This article deals with an EOQ model for products with imperfect quality under an announced price increase, where the defectives are screened out by a 100% inspection process, and which can be sold as a single batch at the end of the inspection process. The optimal ordering policies associated with three kinds of effective times of the price increase are obtained. A numerical example is then provided to illustrate the proposed model. Besides, based on the numerical example, the effects of some important parameters on the optimal order quantity and the corresponding saving in cost are also investigated.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131109860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-01-01DOI: 10.1080/10170669.2010.531771
Yun-Chia Liang, Yueh-Chuan Yin
Thresholding is an important technique for image segmentation, yet the challenge of automatic determination of an optimum threshold value still exists. Otsu's method has been extensively applied to real-world image segmentation, but its exhaustive search procedure has limited its application to multilevel thresholding. For this reason, this article aims at finding a more applicable and effective segmentation procedure – a hybrid optimization scheme based on an ant colony system (ACS) algorithm with Otsu's method. The properties of discriminate analysis in Otsu's method are to analyze the separability among gray levels in an image. The ACS–Otsu algorithm, a non-parametric and unsupervised method, is an extension of the applications of ant colony optimization with a proper design of hierarchical search range and local search for image segmentation. The proposed method is capable of automatically generating the lower and upper bounds of the search range for each threshold and finding the optimal number of thresholds in a very short period of time. The experimental results show that the ACS–Otsu algorithm efficiently speeds up Otsu's method to a great extent and preserves its robustness at multilevel thresholding.
{"title":"Optimal multilevel thresholding using a hybrid ant colony system","authors":"Yun-Chia Liang, Yueh-Chuan Yin","doi":"10.1080/10170669.2010.531771","DOIUrl":"https://doi.org/10.1080/10170669.2010.531771","url":null,"abstract":"Thresholding is an important technique for image segmentation, yet the challenge of automatic determination of an optimum threshold value still exists. Otsu's method has been extensively applied to real-world image segmentation, but its exhaustive search procedure has limited its application to multilevel thresholding. For this reason, this article aims at finding a more applicable and effective segmentation procedure – a hybrid optimization scheme based on an ant colony system (ACS) algorithm with Otsu's method. The properties of discriminate analysis in Otsu's method are to analyze the separability among gray levels in an image. The ACS–Otsu algorithm, a non-parametric and unsupervised method, is an extension of the applications of ant colony optimization with a proper design of hierarchical search range and local search for image segmentation. The proposed method is capable of automatically generating the lower and upper bounds of the search range for each threshold and finding the optimal number of thresholds in a very short period of time. The experimental results show that the ACS–Otsu algorithm efficiently speeds up Otsu's method to a great extent and preserves its robustness at multilevel thresholding.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117063659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-01-01DOI: 10.1080/10170669.2010.534508
Xiaoming Yan
This article considers the problem of joint replenishment and pricing decisions for a single product with fixed ordering costs and random supply in a fluctuated environment. We assume that the environment comprises a Markov chain with finite states and all the parameters are dependent on the environment states, such as supply, demand, and cost structure. Our objective is to maximize the total expected profit during the whole sales horizon by choosing an appropriate replenishment and pricing policy. We show that the form of the optimal ordering and pricing policy has an environment-dependent (s, S, p)-type. Moreover, we analyze the operational effects of random supply on the optimal policy and obtain that the optimal profit increases with the probability of receiving orders. The optimal profit function for the finite horizon problem converges to that for the infinite horizon problem under some mild conditions.
{"title":"Replenishment and pricing decisions for inventory systems with random supply in a fluctuated environment","authors":"Xiaoming Yan","doi":"10.1080/10170669.2010.534508","DOIUrl":"https://doi.org/10.1080/10170669.2010.534508","url":null,"abstract":"This article considers the problem of joint replenishment and pricing decisions for a single product with fixed ordering costs and random supply in a fluctuated environment. We assume that the environment comprises a Markov chain with finite states and all the parameters are dependent on the environment states, such as supply, demand, and cost structure. Our objective is to maximize the total expected profit during the whole sales horizon by choosing an appropriate replenishment and pricing policy. We show that the form of the optimal ordering and pricing policy has an environment-dependent (s, S, p)-type. Moreover, we analyze the operational effects of random supply on the optimal policy and obtain that the optimal profit increases with the probability of receiving orders. The optimal profit function for the finite horizon problem converges to that for the infinite horizon problem under some mild conditions.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127191310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-01-01DOI: 10.1080/10170669.2010.536633
Jing-Wen Li
Adaptation of constant work-in-process (CONWIP) in make-to-order (MTO) environments essentially depends on the support of three key just-in-time (JIT) practices, i.e. unidirectional flow (UF), one-piece flow (OPF), and set-up time reduction (STR) induced by cellular manufacturing. Their impacts on the performance difference between CONWIP and Kanban were investigated by simulation experiments. CONWIP was found to be more adaptable to the dynamic shop environment since it outperforms Kanban regardless of the scenarios of the key JIT practices. The importance of UF in support of CONWIP was highlighted for a smaller STR. While a larger STR extends the effectiveness of UF, the advantage of UF in favor of CONWIP lessens at the same time. To justify the practice of OPF, an 80% or larger STR is required and CONWIP along with UF should be adopted. This study complements the current literature by establishing essential guidelines for coordinating the key JIT practices to enhance the functioning of CONWIP in MTO environments.
{"title":"Comparing Kanban with CONWIP in a make-to-order environment supported by JIT practices","authors":"Jing-Wen Li","doi":"10.1080/10170669.2010.536633","DOIUrl":"https://doi.org/10.1080/10170669.2010.536633","url":null,"abstract":"Adaptation of constant work-in-process (CONWIP) in make-to-order (MTO) environments essentially depends on the support of three key just-in-time (JIT) practices, i.e. unidirectional flow (UF), one-piece flow (OPF), and set-up time reduction (STR) induced by cellular manufacturing. Their impacts on the performance difference between CONWIP and Kanban were investigated by simulation experiments. CONWIP was found to be more adaptable to the dynamic shop environment since it outperforms Kanban regardless of the scenarios of the key JIT practices. The importance of UF in support of CONWIP was highlighted for a smaller STR. While a larger STR extends the effectiveness of UF, the advantage of UF in favor of CONWIP lessens at the same time. To justify the practice of OPF, an 80% or larger STR is required and CONWIP along with UF should be adopted. This study complements the current literature by establishing essential guidelines for coordinating the key JIT practices to enhance the functioning of CONWIP in MTO environments.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133045333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-01-01DOI: 10.1080/10170669.2010.535859
L. Su, James C. Chen
This article considers two- and three-machine flowshop scheduling problems, where the operation on the last machine may or may not be omitted. The objective is to minimize maximum lateness for the two-machine flowshop and makespan for the three-machine flowshop, having the above-mentioned option, designated as and , respectively. Given that both problems are NP-hard, a heuristic and a branch and bound algorithm are proposed to solve each problem. Dominance properties are proposed and worse case performances under certain conditions are provided. Computational results show that the heuristic algorithm for each problem consistently generates good schedules.
{"title":"Two- and three-machine flowshop scheduling problems with optional final operation","authors":"L. Su, James C. Chen","doi":"10.1080/10170669.2010.535859","DOIUrl":"https://doi.org/10.1080/10170669.2010.535859","url":null,"abstract":"This article considers two- and three-machine flowshop scheduling problems, where the operation on the last machine may or may not be omitted. The objective is to minimize maximum lateness for the two-machine flowshop and makespan for the three-machine flowshop, having the above-mentioned option, designated as and , respectively. Given that both problems are NP-hard, a heuristic and a branch and bound algorithm are proposed to solve each problem. Dominance properties are proposed and worse case performances under certain conditions are provided. Computational results show that the heuristic algorithm for each problem consistently generates good schedules.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124203373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-01-01DOI: 10.1080/10170669.2010.528919
Ting-Yu Chen
The purpose of this article is to present a useful method for estimating the importance of criteria and reducing the leniency bias in multi-criteria decision analysis based on interval-valued fuzzy sets. Several types of net predispositions are defined to represent an aggregated effect of interval-valued evaluations. The suitability function to measure the overall evaluation of each alternative is then determined based on simple additive weighting (SAW) methods. Another method, the relative closeness of each alternative to the positive-ideal solution, can also be obtained by net predispositions when using the technique for order preference by similarity to ideal solution (TOPSIS). Because positive or negative leniency may exist when most criteria are assigned unduly high and low ratings, respectively, some deviation variables are introduced to mitigate the effects of overestimated and underestimated ratings on criterion importance. Considering the two objectives of maximal weighted suitability (or maximal closeness coefficient) and minimal deviation values, an integrated programming model is proposed to compute the optimal weights for the criteria and the corresponding suitability degrees (or closeness coefficient values) for alternative rankings. Flexible algorithms with SAW and TOPSIS methods are established by considering both objective and subjective information to compute optimal multi-criteria decisions. Finally, the feasibility and effectiveness of the proposed methods are illustrated by a numerical example.
{"title":"Multi-criteria decision-making method with leniency reduction based on interval-valued fuzzy sets","authors":"Ting-Yu Chen","doi":"10.1080/10170669.2010.528919","DOIUrl":"https://doi.org/10.1080/10170669.2010.528919","url":null,"abstract":"The purpose of this article is to present a useful method for estimating the importance of criteria and reducing the leniency bias in multi-criteria decision analysis based on interval-valued fuzzy sets. Several types of net predispositions are defined to represent an aggregated effect of interval-valued evaluations. The suitability function to measure the overall evaluation of each alternative is then determined based on simple additive weighting (SAW) methods. Another method, the relative closeness of each alternative to the positive-ideal solution, can also be obtained by net predispositions when using the technique for order preference by similarity to ideal solution (TOPSIS). Because positive or negative leniency may exist when most criteria are assigned unduly high and low ratings, respectively, some deviation variables are introduced to mitigate the effects of overestimated and underestimated ratings on criterion importance. Considering the two objectives of maximal weighted suitability (or maximal closeness coefficient) and minimal deviation values, an integrated programming model is proposed to compute the optimal weights for the criteria and the corresponding suitability degrees (or closeness coefficient values) for alternative rankings. Flexible algorithms with SAW and TOPSIS methods are established by considering both objective and subjective information to compute optimal multi-criteria decisions. Finally, the feasibility and effectiveness of the proposed methods are illustrated by a numerical example.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130133322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-10-27DOI: 10.1080/10170669.2010.525393
C. Bao, Kun-Cheng Lee, H. Pu
Since Charnes et al. [“Measuring the efficiency of decision making units,” European Journal of Operational Research, 2, 429–444 (1978)] proposed the concept of data envelopment analysis (DEA), many papers have been published using DEA. However, not many of these papers discuss the fundamental characteristics of input and output variables. For instance, the differing relationships among variables are rarely discussed, nor is there any discussion about the effects on evaluating efficiency when data variables are transformed. If the data used for analysis are misused, the relative efficiency among different departments or organizations can be affected. Thus, a clarification of the relative relationships among different variables is essential in order to achieve accuracy in using DEA. This article, therefore, aims to discuss these issues through a focus on the characteristics of input and output variables used in DEA. By means of mathematical analysis, this research proposes four theorems, together with two examples, to discuss the characteristics of the input and output variable in DEA. We put forward seven findings which demonstrate how DEA can be misunderstood and misused. Through these findings, this study seeks to prevent future research from making mistakes through misuse of data.
自Charnes et al. [measurement the efficiency of decision making units， " European Journal of Operational Research, 2,429 - 444(1978)]提出数据包络分析(DEA)的概念以来，已有许多论文使用了DEA。然而，这些论文中讨论输入和输出变量的基本特征的论文并不多。例如，很少讨论变量之间的不同关系，也没有讨论数据变量转换时对评估效率的影响。如果用于分析的数据被滥用，可能会影响不同部门或组织之间的相对效率。因此，澄清不同变量之间的相对关系是必要的，以达到使用DEA的准确性。因此，本文旨在通过关注DEA中使用的输入和输出变量的特征来讨论这些问题。本文通过数学分析，提出了四个定理，并结合两个实例，讨论了DEA中输入和输出变量的特征。我们提出了七个发现，证明了DEA是如何被误解和滥用的。通过这些发现，本研究旨在防止未来的研究因滥用数据而出现错误。
{"title":"A study of the input/output variable characteristics in DEA","authors":"C. Bao, Kun-Cheng Lee, H. Pu","doi":"10.1080/10170669.2010.525393","DOIUrl":"https://doi.org/10.1080/10170669.2010.525393","url":null,"abstract":"Since Charnes et al. [“Measuring the efficiency of decision making units,” European Journal of Operational Research, 2, 429–444 (1978)] proposed the concept of data envelopment analysis (DEA), many papers have been published using DEA. However, not many of these papers discuss the fundamental characteristics of input and output variables. For instance, the differing relationships among variables are rarely discussed, nor is there any discussion about the effects on evaluating efficiency when data variables are transformed. If the data used for analysis are misused, the relative efficiency among different departments or organizations can be affected. Thus, a clarification of the relative relationships among different variables is essential in order to achieve accuracy in using DEA. This article, therefore, aims to discuss these issues through a focus on the characteristics of input and output variables used in DEA. By means of mathematical analysis, this research proposes four theorems, together with two examples, to discuss the characteristics of the input and output variable in DEA. We put forward seven findings which demonstrate how DEA can be misunderstood and misused. Through these findings, this study seeks to prevent future research from making mistakes through misuse of data.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130938287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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