How to find frequent sequences.
On Fri, Jul 13, 2012 at 02:38:57PM -0500, Vineet Shukla wrote:
Hi Petr, Yes, that's really very helpful. Petr : Using this interpretation, AB occurs at lines 1,3,4 and not 1,3,5. Is this correct? Vineet : Yes , thats right sorry for the typo. Petr: If some sequence contains several ocurrences of a pattern, for example, the sequence A, B, A, B contains AB twice, then it is counted only once? Vineet : what needs to be done if I would like to count it as many times as it occurred ? remove dont call unique function from "unique(embed(rev(x), lpattern))" ?
Hi. Yes. Without unique() the matrix embed(rev(x), lpattern) contains all occurences in one sequence and the final result will be the sum of the numbers of occurences in all sequences. Petr.