Selective Convexity in Extended GDEA Model

نویسندگان

  • Sevan Sohraiee
  • Farhad Hosseinzadeh Lotfi
چکیده

In this paper, an extension of the generalized data envelopment analysis (GDEA) model has been introduced. 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 is used to evaluate decision’s making units (DMUs) either with full convexity assumption imposed on inputs and outputs (CCR and BCC models) or without considering convexity assumption for each input and output (FDH model). We have proposed a model in the EGDEA, which can treat each input and output individually with respect to the convexity assumption.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Evaluation of Unit's Performance in Presence of Subunits by Using GDEA

Data Envelopment Analysis (DEA) is a technique that uses all collected observations to measure performance. This method presents no data about how to operate on DMU. The present research attempted to study a unit with all its subunits, if the unit is efficient, it means that all its subunits are efficient too and if it is an inefficient, it shows clearly that which one of the subunits makes ine...

متن کامل

Calculating Cost Efficiency with Integer Data in the Absence of Convexity

One of the new topics in DEA is the data with integer values. In DEA classic models, it is assumed that input and output variables have real values. However, in many cases, some inputs or outputs can have integer values. Measuring cost efficiency is another method to evaluate the performance and assess the capabilities of a single decision-making unit for manufacturing current products at a min...

متن کامل

Investigating preferences for color-shape combinations with gaze driven optimization method based on evolutionary algorithms

Studying aesthetic preference is notoriously difficult because it targets individual experience. Eye movements provide a rich source of behavioral measures that directly reflect subjective choice. To determine individual preferences for simple composition rules we here use fixation duration as the fitness measure in a Gaze Driven Evolutionary Algorithm (GDEA), which has been demonstrated as a t...

متن کامل

Setting up a Graph Drawing E-print Archive (GDEA) - a proposal

• Introduction “E-prints” are electronic copies of research output, like pre-prints, journal articles, conference papers, etc. An e-print archive is simply an online repository of such electronic copies. E-print archives promise many benefits for academics. They maximize visibility and accessibility of research. There are a number of successful open access e-print archives. “ArXiv” [1] or “ECCC...

متن کامل

(m1,m2)-Convexity and Some New Hermite-Hadamard Type Inequalities

In this manuscript, a new class of extended (m1,m2)-convex and concave functions is introduced. After some properties of (m1,m2)-convex functions have been given, the inequalities obtained with Hölder and Hölder-İşcan and power-mean and improwed power-mean integral inequalities have been compared and it has been shown that the inequality with Hölder-İşcan inequality gives a better approach than...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2011