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Annotation of freem_fileman/DIOQ.m, revision 1.1.1.1

1.1       snw         1: DIOQ   ;SFISC/GS,TKW-QUERY OPTIMIZER ;10/20/94  11:13
                      2:        ;;21.0;VA FileMan;;Dec 28, 1994
                      3:        ;Per VHA Directive 10-93-142, this routine should not be modified.
                      4: SER(F,DIOQGET,DIOQCHEK,C,X,%,W,P)      ; COMPUTE SEARCH EFFICIENCY RATING
                      5:        ; F=FILE#, DIOQGET=GET CODE, DIOQCHEK=EVALUATION CODE,
                      6:        ; C=USEABLE INDEX? (1=YES, 0=NO)
                      7:        ; X=EFFICIENCY RATING, %=PREVALANCE OF HITS (PROBABILITY)
                      8:        ; W=WRITE PROGRESS MSG.TO USER, P=POINTER TYPE
                      9:        N Z S (X,%)=0,W=$G(W),Z=$G(^DIC(+$G(F),0,"GL")) Q:Z=""
                     10:        N I,N,T,D0,DA,DITRUE,DIFIRST S DIFIRST=1
                     11:        I W S W=$P($H,",",2)+.1
                     12:        S (T,N)=0,I=$P(@(Z_"0)"),U,4)\100
                     13:        F D0=0:I S D0=$O(@(Z_D0_")")) Q:'D0  Q:N>100  S DA=D0,N=N+1 D TEST I DITRUE S T=T+1
                     14:        S %=$S(N=0:1,T=0:0,1:T/N),(X,%)=1-% I C S:%=1 X=100 S:%'=1 X=%/(1-%)
                     15:        I P S %=%/2,X=X/2
                     16:        S X=$J(X,1,4),%=$J(%,1,4) Q
                     17:        ;
                     18: TEST   ; GET VALUE AND EVALUATE IT
                     19:        N I,L,N,T,Z,DIOQSVD0 S DIOQSVD0=D0 D  S D0=DIOQSVD0
                     20:        . N F,C,W,P,DIFIRST
                     21:        . X DIOQGET,DIOQCHEK S DITRUE=$T Q
                     22:        Q:'W  Q:($P($H,",",2)-W)'>3  S W=$P($H,",",2)+.1
                     23:        I DIFIRST S DIFIRST=0 W !,"Computing search efficiency..." Q
                     24:        W "." Q