New frontiers in mining complex patterns 6th International Workshop, NFMCP 2017 : held in conjunction with ECML-PKDD 2017, Skopje, Macedonia, September 18-22, 2017 : revised selected papers - Appice, Annalisa; Loglisci, Corrado; Manco, Giuseppe; Masciari, Elio; Raś, Zbigniew W. 1947- (Springer, 2018)