Big-O(Q): Big-Graphs Online Querying Workshop co-located with VLDB 2015 Date: August 31, 2015 Venue: Kohala Coast, Hawaii, USA Program Schedule: 09:00a - 9:10a: Opening Remarks 09:15a - 10:30a: Keynote by Laks V.S. Lakshmanan(Professor, The University of British Columbia) 10:30a - 11:00a: Coffee Break 11:00a - 12:30p: Regular Papers S2X: Graph-Parallel Querying of RDF with GraphX Alexander Schatzle (University of Freiburg), Martin Przyjaciel-Zablocki (University of Freiburg), Georg Lausen (University of Freiburg) The Time Has Come: Traversal and Reachability in Time-Varying Graphs Max Wildemann (SAP SE), Michael Rudolf (TU Dresden), Marcus Paradies (TU Dresden) Robust Cardinality Estimation for Subgraph Isomorphism Queries on Property Graphs Marcus Paradies (TU Dresden), Elena Vasilyeva (TU Dresden), Adrian Mocan (SAP SE), Wolfgang Lehner (TU Dresden) 12:30p - 12:40p: Closing Remarks