Yazar "Gerami, J." seçeneğine göre listele

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    Calculating Environmental, Social and Economic Efficiencies of a Two-Stage Supply Chain in DEA-R Using Genetic Algorithm
    (Springer Science and Business Media Deutschland GmbH, 2023) Hosseinzadeh Lotfi, F.; Allahviranloo, T.; Pedrycz, W.; Mozaffari, M.R.; Gerami, J.
    In this chapter, first the inputs and outputs of the supply chain are divided based on sustainability factors. Then, the environmental, social and economic efficiency scores are calculated. In addition, in the evaluation of a supply chain, the multiplier form of DEA-R model in an output-orientation is utilized. Due to the time limit for accessing data and for avoiding pseudo inefficiencies, DEA-R models in the supply chain are proposed based on the determined sustainability factors. At the end, the supply chains of 20 fire stations in in the city of Shiraz, Iran, at the end of 2017 are evaluated using DEA-R models. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.
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    A Centralized Resource Allocation Approach for Two-Stage Data Envelopment Analysis
    (Springer Science and Business Media Deutschland GmbH, 2023) Hosseinzadeh Lotfi, F.; Allahviranloo, T.; Pedrycz, W.; Mozaffari, M.R.; Gerami, J.
    In this chapter, two-stage network models based on non-radial SBM models in DEA and DEA-R are presented. These models are also presented based on central resource allocation models. Two-stage network performance evaluation models with the structure of central resource allocation, by solving a model, the targets corresponding to the DMUs in the first, second and overall stages are achieved. The two-stage network DEA-R models are in the form of a linear programming problem and obtains the efficiency and targets for each of the DMU in the first stages of the second and overall stages. Also, the central resource allocation (CRA) models achieve the targets corresponding to each of the DMUs. In this study, non-radial models are used based on the slacks of input and output components, and in this way, we recognize all inefficiency factors. In following, a case study is presented for the evaluation of education units in Iran. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.
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    Cost and Revenue Efficiency Based on MOLP in DEA-R Models
    (Springer Science and Business Media Deutschland GmbH, 2023) Hosseinzadeh Lotfi, F.; Allahviranloo, T.; Pedrycz, W.; Mozaffari, M.R.; Gerami, J.
    In this chapter, cost and revenue efficiency models are presented in DEA and DEA-R, then using the multi-objective linear programming (MOLP) structure, cost and revenue efficiency models are proposed in DEA and DEA-R. Because in the MOLP structure, Pareto-optimal solutions are important, the score of cost efficiency and revenue with the MOLP structure can be useful for the decision maker (DM). Also, the overall efficiency model is also proposed by considering the prices of inputs and outputs based on the structure of MOLP. Finally, the 31 branches of the Commercial Bank of China, the efficiency of the cost of revenue are compared in DEA and DEA-R. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.
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    Determining the Production Possibility Set for Ratio Data: A Novel Hybrid DEA-R Approach
    (Springer Science and Business Media Deutschland GmbH, 2023) Hosseinzadeh Lotfi, F.; Allahviranloo, T.; Pedrycz, W.; Mozaffari, M.R.; Gerami, J.
    In some organizations, performance evaluation is measured using ratios such as the ratio of outputs to inputs or vice versa (leverage ratio and quick ratio). While a handful of papers have been published on the DEA-R research stream, thus far the role of each input in terms of the production of each output has been neglected. Therefore, this chapter revisits the axiomatic structure that underlies DEA and Ratio Analysis (RA) models in terms of their resulting Production Possibility Set (PPS) and develops a novel hybrid DEA-RA approach capable of measuring the share of each index (i.e. input/output or output/input ratios) in the overall efficiency measure. As a consequence of this novel perspective on efficiency decomposition, weight restrictions for each specific input can be determined in accordance with its share in producing a given output. A case study on an auto spare-parts company is presented to illustrate the applicability of the new DEA-RA approach, while providing means for a robustness analysis with previous DEA-R models. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.
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    Finding Suitable Target in DEA and DEA-R
    (Springer Science and Business Media Deutschland GmbH, 2023) Hosseinzadeh Lotfi, F.; Allahviranloo, T.; Pedrycz, W.; Mozaffari, M.R.; Gerami, J.
    Organizations may have two strategies in DEA, D.E.A.-R. to find suitable targets for DMUs. In the first strategy, efficient, inefficient units are separated using the efficiency scale of classical models, then the target is determined for all inefficient units. In the second strategy, the DMUs are categorized based on the efficiency scale, then the target is found in each category. Therefore, the target DMUs do not need to be on the efficiency frontier. In this section, MOLP models are used to find suitable targets in DEA, D.E.A.-R. on the efficiency frontier. In conclusion, the target for 41 Chinese commercial banks in 2022 is obtained based on MOLP models. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.
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    Incorporating Preference Information in DEA-R and DEA for Efficiency Analysis
    (Springer Science and Business Media Deutschland GmbH, 2023) Hosseinzadeh Lotfi, F.; Allahviranloo, T.; Pedrycz, W.; Mozaffari, M.R.; Gerami, J.
    In this section, we propose the relation between DEA-R. models, DEA with ratio measure as acombination of DEA, Ratio analysis.We descript different ratio data in DEA.We show DEA-R. models have asimilar behavior with DEA. model.We investigate the properties of proposed models.In the following, we proposed concept of value efficiency in DEA, DEA-R. Finally, we used of proposed models based on the value efficiency for incorporating preference information of decision maker (DM) in process evaluation of efficiency of commercial banks. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.
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    Relationship Between Ratio Analysis, DEA-R and DEA Models
    (Springer Science and Business Media Deutschland GmbH, 2023) Hosseinzadeh Lotfi, F.; Allahviranloo, T.; Pedrycz, W.; Mozaffari, M.R.; Gerami, J.
    Data envelopment analysis (DEA) is one of often used modeling tools for efficiency and performance evaluation of decision making units (DMUs). DEA-R is a group of novel mathematical models that combines standard DEA methodology and ratio analysis. The efficiency score given by standard DEA model is less than or equal to that given by DEA-R model. In case of single input or single output, the efficiency scores in DEA and DEA-R models are equal. A basic DEA-R model without explicit inputs is formulated and relation between output-oriented DEA models without explicit inputs and output-oriented DEA-R models is analyzed. Finally, 41 Chinese commercial banks are evaluated in DEA and DEA-R models in the input and output oriented. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.
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    A Slack-Based Model for Efficiency Evaluation in DEA and DEA-R
    (Springer Science and Business Media Deutschland GmbH, 2023) Hosseinzadeh Lotfi, F.; Allahviranloo, T.; Pedrycz, W.; Mozaffari, M.R.; Gerami, J.
    In this chapter, we proposed the slack-based model (SBM) based on DEA-R models. We compare these models to SBM model in DEA. At first, we propose SBM DEA model in the multiple objective linear programming (MOLP). In the following, we convert them in linear programing. Also, we develop SBM DEA based on the central resource allocation (CRA) model. The new model obtains efficient targets for all DMUs. We use the proposed models for evaluation performance of commercial banks. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.
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    The Two-Stage Network Based on Ratio Analysis Models
    (Springer Science and Business Media Deutschland GmbH, 2023) Hosseinzadeh Lotfi, F.; Allahviranloo, T.; Pedrycz, W.; Mozaffari, M.R.; Gerami, J.
    In this chapter, the ratio analysis models are introduced in the multiplier form and different oriented. The relationships between models DEA and ratio analysis have been presented. Also the two-stage network models based on ratio analysis are proposed. The proposed model in this chapter obtains the overall efficiency of whole process in a two stage network in the different times and shows the relationships between the efficiency of whole process and the efficiency score of each stages in the different times based on the ratio analysis model. By using of the proposed model, the importance of each stages are putted in evaluating the overall efficiency of the network. This research develops the dynamic ratio analysis to evaluate the efficiency and apply them for evaluation performance of educational centers in Iran in a period of three years. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.