This two-volume set LNAI 10313 and LNAI 10314 constitutes the proceedings of the International
Joint Conference on Rough Sets IJCRS 2017 held in Olsztyn Poland in July 2017. The 74
revised full papers presented together with 16 short papers and 16 invited talks were
carefully reviewed and selected from 130 submissions. The papers in this two set-volume of
IJCRS 2017 follow the track already rutted by RSCTC and JRS conferences which aimed at
unification of many facets of rough set theory from theoretical aspects of the rough set idea
bordering on theory of concepts and going through algebraic structures topological structures
logics for uncertain reasoning decision algorithms relations to other theories of vagueness
and ambiguity then to extensions of the rough set idea like granular structures rough
mereology and to applications of the idea in diverse fields of applied science including
hybrid methods like rough-fuzzy neuro-rough neuro-rough-fuzzy computing. IJCRS 2017
encompasses topics spread among four main tracks: Rough Sets and Data Science (in relation to
RSCTC series organized since 1998) Rough Sets and Granular Computing (in relation to RSFDGrC
series organized since 1999) Rough Sets and Knowledge Technology (in relation to RSKT series
organized since 2006) and Rough Sets and Intelligent Systems (in relation to RSEISP series
organized since 2007).