The differences between PPM and AKOM
Posted by:
Dor
Date: May 18, 2019 01:32AM
Hi,
I read your paper about the CPT\CPT+ and I'm sure what are the differences between All-kth-order Markov (AKOM) and Prediction by Partial Matching (PPM).
I thought that PPM keeps a dictionary for each order which counts the occurrences of an element given the previous sub-sequence and then, in the prediction phase, the algorithm tries to match one shorter length sub-sequence until a match is found (i.e., partial matching).
But then, I read this paper:
Brun, A., & Boyer, A. (2009, September). Towards privacy compliant and anytime recommender systems. In International Conference on Electronic Commerce and Web Technologies (pp. 276-287). Springer, Berlin, Heidelberg.
And it looks like the same explanation for the PPM...
Thank you.