XploRe Help : deahull

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Library:	metrics
See also:	fdhull

Quantlet:		deahull
Description:		returns the DEA (Data Envelopment Analysis) input efficiency score and efficient level of inputs for each DMU (Decision making unit)

Reference(s):

Charnes, Cooper and Rhodes (1978), "Measuring the efficiency of decision making units." European Journal of Operations Research : 429-44. Cooper, Seiford, and Tone (1999), Data Envelopment Analysis - A Comprehensive Text with Models, Applications, References, Kluwer Academic Publishers.

Usage:	`dea = deahull (X, Y)`
Input:
	`X`	n x p matrix, p inputs of n DMU's, allows only NONNEGATIVE values for its entries
	`Y`	n x q matrix, q outputs of n DMU's, allows only NONNEGATIVE values for its entries
Output:
	`dea.effscore`	n x 1 vector, the input efficiency scores of DMU's
	`dea.efflevel`	n x p matrix, the efficient level of inputs of DMU's

Example:

library("nummath") library("metrics") scheel = read("agency.dat") X = scheel[,1:4] Y = scheel[,5:6] dea = deahull(X,Y) dea.effscore dea.efflevel

Result:

The DEA efficiency score and efficient level of inputs
for each DMU is listed.

Contents of effscore
[ 1,]  0.38392
[ 2,]  0.49063
[ 3,]  0.86449
...
[63,]        1

Contents of efflevel
[ 1,]   52.981   92.909   3.8392  1.0896e+05
[ 2,]   81.444   60.838   2.4531    76895
[ 3,]    131.4   72.617   2.5935    96070
...
[63,]      108      257        0  2.9991e+05

Author: W. Haerdle, S. Jeong, 20021215 license MD*Tech