Cobweb and sorting
crappy_viking
New Altair Community Member
Hi,
Cobweb cluster model is very interesting, it comes from cognitive sciences and always produces a set of clusters with balanced distribution. Now, it is very sensitive to the learning order, the sequence of examplesets.
I have tried RM4.6 with cobweb, and there is "NonDominated Sorting". Is it only increasing ? May we specify the sense of sorting, like "traditional sorting" ?
I can get the results by a few tricks like attribute construction then use the "opposite attribute", but a complete option for sorting direction would be handy.
C.V.
Cobweb cluster model is very interesting, it comes from cognitive sciences and always produces a set of clusters with balanced distribution. Now, it is very sensitive to the learning order, the sequence of examplesets.
I have tried RM4.6 with cobweb, and there is "NonDominated Sorting". Is it only increasing ? May we specify the sense of sorting, like "traditional sorting" ?
I can get the results by a few tricks like attribute construction then use the "opposite attribute", but a complete option for sorting direction would be handy.
C.V.
Tagged:
0
Answers
-
Hi,
did you try the Sorting operator? It provides a parameter for the sorting direction.
Greetings,
Sebastian0 -
Yes, I have tried it, but it has not the same behaviour than the "NonDominated" one...Have you any information on it ?
c.v.0 -
Hi,
the Sorting algorithm is, uhm, a sorting algorithm. I think in fact it uses merge sort, but I doubt, you wanted to hear this? What exactly do you want to know at all?
Greetings,
Sebastian0
