Paper Information

Title: 

SELECTIVE CONVEXITY IN EXTENDED GDEA MODELS

Type: PAPER
Author(s): HOSSEINZADEH LOTFI FARHAD*,JAHANSHAHLOO GHOLAM REZA,SOHRAEI SEVAN
 
 *DEPARTMENT OF MATHEMATICS, SCIENCE AND RESEARCH BRANCH, ISLAMIC AZAD UNIVERSITY, TEHRAN, IRAN
 
Name of Seminar: INTERNATIONAL CONFERENCE OF IRANIAN OPERATIONS RESEARCH SOCIETY
Type of Seminar:  CONFERENCE
Sponsor:  OPERATIONS RESEARCH SOCIETY
Date:  2008Volume 1
 
 
Abstract: 

1. EXTENDED GDEA MODEL
AN EXTENSION OF GENERALIZED DATA ENVELOPMENT ANALYSIS (GDEA) MODEL HAS BEEN INTRODUCED IN THIS PAPER. IN THIS GENERALIZATION DIFFERENT CASES OF PRODUCTION POSSIBILITY SET (PPS) OF THE EXTENDED GENERALIZED DATA ENVELOPMENT ANALYSIS (EGDEA) MODEL ARE INVESTIGATED. THE PROPOSED EGDEA MODEL EVALUATES THE DECISION’S MAKING UNITS (DMUS) EITHER WITH FULL CONVEXITY ASSUMPTION IMPOSED ON INPUTS AND OUTPUTS (CCR AND BCC MODELS) OR WITHOUT CONVEXITY ASSUMPTION FOR EACH INPUT AND OUTPUT (FDH MODEL). WE HAVE PROPOSED A MODEL IN EGDEA, WHICH CAN TREAT EACH INPUT AND OUTPUT INDIVIDUALLY WITH RESPECT TO THE CONVEXITY ASSUMPTION. THE CONCEPT OF SELECTIVE CONVEXITY IN DATA ENVELOPMENT ANALYSIS (DEA) HAS BEEN UTILIZED IN THE PROPOSED EGDEA MODEL.

 
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