A two-phase approach for unexpected pattern mining

Jingtian Zhang, Lidan Shou, Sai Wu, Gang Chen, Ke Chen

Abstract: Highlights•A new mining task, unexpected pattern retrieval is proposed.•Frequent pattern mining algorithms on the multi-dimensional dataset is extended.•The partial results among the subgroups are shared.•New index is built to retrieval unexpected patterns interactively.•Experiments show the efficiency and effectiveness of the proposed method.