If you add the new cases to your original data file, with a value for
your grouping variable that is outside the range you specify in the
DISCRIMINANT Groups= specification. for example if your 7 groups have
values 1 to 7 on myvar use the value 8 for the cases that are not
previously classified.
DISCRIMINANT Groups= myvar(1,7)
. . .
/classify . . .
/save . . .
Art Kendall
Social Research Consultants
Matthew wrote:
> List users,
> I have run a discriminant analysis in SPSS and would like to use the discrim
> score to transform the prior probabilities to posterior probabilities. I've
> run a discrim against a 7 level target. However, I need to score a separate
> dataset with the equation I created. I would like to not only have the score
> in my new dataset but also the probability that SPSS produces. I have no
> problem computing a score with the discrim equation. If I score a new record
> that hits my database with the 7 level discrim equation, I get seven scores
> for that record. I would also like to get 7 new variables that track the
> probability of being in each group (summing all probabilities would equal
> 1). Has anyone encountered a task like this? I know SPSS uses Bayes' theorem
> to do this, but I can't quite get the formula to work on my new records.
> Also, I have to transport this solution into another application. I can’t
> bring my new data back into SPSS. Thanks in advance for any help provided.
>
> Best,
> Matt
>
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