What is the difference between "Sequential Pattern Mining" and "Sequential Rule Mining"

Question

The documentation for the very powerful open source data mining tool SPMF lists them separately:

http://www.philippe-fournier-viger.com/spmf/index.php?link=algorithms.php

Does any one know why?

Answer 1

The web site has a pretty detailed Q&A flowchart which shows what the difference is from the author's point of view:

http://www.philippe-fournier-viger.com/spmf/map_algorithms_spmf_data_mining097.png