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 L N posted on Thursday, November 03, 2011 - 3:56 pm
I was given the warning

"ONE OR MORE PARAMETERS WERE FIXED TO AVOID SINGULARITY OF THE INFORMATION MATRIX. THE SINGULARITY IS MOST LIKELY BECAUSE THE MODEL IS NOT IDENTIFIED, OR BECAUSE OF EMPTY CELLS IN THE JOINT
DISTRIBUTION OF THE CATEGORICAL VARIABLES IN THE MODEL.
THE FOLLOWING PARAMETERS WERE FIXED:224"

Output shows 224 is ss_f1m1

(part of input)
define:
inter1= ses * f1math;
inter2= ses * race1;
inter3= ses * race2;

model:
major ON SES (P1)
PARASP1 PARASP2 MATHSE HIMATH1 HIMATH2
RACE1 (P3)
RACE2 (P4)
GPA1 GPA2 PS1SEC1 PS1SEC2 loan BYMATH
F1MATH (P2)
inter1 (P5)
inter2 (P6)
inter3 (P7);

SES;PARASP1; PARASP2; MATHSE; HIMATH1;
HIMATH2; RACE1; RACE2; GPA1; GPA2; PS1SEC1; PS1SEC2;loan; BYMATH; F1MATH; inter1; inter2; inter3;

model constraint:

new ss_SES1 ss_SES2 ss_SES3 ss_SES4 ss_SES5
ss_SES6 ss_SES7 ss_SES8 ss_SES9 ss_SES10
ss_SES11 ss_SES12 ss_SES13 ss_SES14 ss_SES15
ss_f1m1 ss_f1m2 ss_f1m3 ss_f1m4 ss_f1m5
ss_r11 ss_r12 ss_r13 ss_r14 ss_r15
ss_r21 ss_r22 ss_r23 ss_r24 ss_r25;

ss_f1m1=P2-P5*1.45;
ss_f1m2=P2-P5*0.71;
ss_f1m3=P2+P5*0.03;
ss_f1m4=P2+P5*0.77;
ss_f1m5=P2+P5*1.51;
...
Any suggestion would be appreciated.
 Linda K. Muthen posted on Thursday, November 03, 2011 - 4:30 pm
Please send the full output and your license number to support@statmodel.com.
 Malcolm Cunningham posted on Sunday, December 18, 2011 - 9:35 pm
I am also receiving this error message. A snippet of my input is as follows:

ANALYSIS:
PROCESSORS = 4 (STARTS);
TYPE = MIXTURE;
ALGORITHM = INTEGRATION;
STARTS = 100 10;
K-1STARTS = 100 100;
LRTSTARTS = 0 0 250 25;
LRTBOOTSTRAP 100;
MODEL:
%Overall%
f by G3_MC01-G3_MC32 G3_OR01-G3_OR05;
f@0;

%c#1%
[f*];
[G3_MC01$1-G3_MC32$1 G3_OR01$1-G3_OR05$1] (1-37);

%c#2%
[f*];
[G3_MC01$1-G3_MC32$1 G3_OR01$1-G3_OR05$1] (1-37);

%c#3%
[f*];
[G3_MC01$1-G3_MC32$1 G3_OR01$1-G3_OR05$1] (1-37);

%c#4%
[f*];
[G3_MC01$1-G3_MC32$1 G3_OR01$1-G3_OR05$1] (1-37);

OUTPUT:
SAMPSTAT TECH1 TECH4 TECH7 RESIDUAL PATTERNS TECH11;
SAVEDATA:
FILE IS "D:/Cohort 2/G3/FMM-2 DUMP/c4-probs.txt";
SAVE = FSCORES LOG CPROB;

Thank you
 Linda K. Muthen posted on Monday, December 19, 2011 - 2:29 am
Please send the full output and your license number to support@statmodel.com.
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