<p>As a sub-problem of pattern discovery, utility-oriented mining has recently emerged as focus researchers’ attention and offers broad application prospects. Considering the dynamic characteristics input databases, incremental utility methods have been proposed, aiming to discover implicit information/ patterns whose importance/utility is not less than user-specified threshold ...

Finding a pattern which separates two sets is a critical task in discovery. Given two sets of strings, consider the problem to find a subsequence that is common to one set but never appears in the other set. The problem is known to be NP-complete. Episode pattern is a generalized concept of subsequence pattern where the length of substring containing the subsequence is bounded. We generalize th...