There has been some good discussion on the sessionization feature lately, e.g., https://github.com/apache/incubator-madlib/pull/44 Thanks to Jim Nasby <jim.na...@bluetreble.com> for his comments.
I broke sessionization into 3 phases, of which Phase 1 and 2 are in work now by Nandish Jayaram: Sessionization - Phase 1 https://issues.apache.org/jira/browse/MADLIB-909 Sessionization - Phase 2 (output controls) https://issues.apache.org/jira/browse/MADLIB-1001 But Phase 3 has no assignee if someone is interested in thinking about how to implement a min time parameter, either with window functions or another approach? Sessionization - Phase 3 (minimum time) https://issues.apache.org/jira/browse/MADLIB-1002 Frank