今天下载次数到了，明天再下载了。

 就下面这么点东西卖这么贵!实在有点不太厚道.

MODEL:
! Data Envelope Analysis of Decision Maker Efficiency;
 SETS:
  DMU/BL HW NT OP YK EL/: ! Six schools;
     SCORE; ! Each decision making unit has a;! score to be computed;
  FACTOR/COST RICH WRIT SCIN/;
! There is a set of factors, input & output;
   DXF( DMU, FACTOR):  F; ! F( I, J) = Jth factor  of DMU I;
! Weights used to compute DMU I's score;
   DXFXD(DMU,FACTOR) : W;
 ENDSETS
 DATA:
! Inputs are spending/pupil, % not low income;
! Outputs are Writing score and Science score;
  NINPUTS = 2;  ! The first NINPUTS factors are inputs;
!        The inputs,    the outputs;
         !cost   rich     writ   scin;                 
     F=  8939    64.3     25.2    223     !BL;
         8625    99       28.2    287     !HW;
         10813   99.6     29.4    317     !NT;
         10638   96       26.4    291     !OP;
         6240    96.2     27.2    295     !YK;
         4719    79.9     25.5    222;    !EL;
 ENDDATA
! Try to make everyone's score as high as possible;
   MAX = @SUM( DMU: SCORE);
! The LP for each DMU to get its score;
   @FOR( DMU( I):
    SCORE( I) = @SUM( FACTOR(J)|J #GT# NINPUTS:
     F(I, J)* W(I, J));
! Sum of inputs(denominator) = 1;
    @SUM( FACTOR( J)| J #LE# NINPUTS:
     F( I, J)* W( I, J)) = 1;
! Using DMU I's weights, no DMU can score better than 1;
    @FOR( DMU( K):
     @SUM( FACTOR( J)| J #GT# NINPUTS:
      F( K, J) * W( I, J))
       <= @SUM( FACTOR( J)| J #LE# NINPUTS:
        F( K, J) * W( I, J))
    )
   );
! The weights must be greater than zero;
   @FOR( DXFXD( I, J): @BND( .00001, X, 100000));
END

我想要啊 想要的很

哎呀

好黑啊啊啊

是那个具体的模型哈？

應該不錯八

什么啊？总要详细点，包含程序吗？

买了希望有用啊！！！

现在急需中

郁闷，想买。。。。