old-talks.md

@@ -6,6 +6,7 @@ Previous talks
 
 | Time | Speaker | Title / Article details |
 |------|---------|-------------------------|
+| 2015-10-22 |  [Boris Motik](https://www.cs.ox.ac.uk/boris.motik/) | [Estimating the Number of Answers to Conjunctive Queries using Graph Summarisation] (2015-10-22)
 | 2015-10-15 |  [Anastasios Noulas (Tassos)](http://www.csap.cam.ac.uk/network/tassos-noulas/) | [Location-based network formations in urban environments] (2015-10-15)
 | 2015-10-08 |  [Mikko Kivela](https://www.maths.ox.ac.uk/people/mikko.kivela) | [Spatio-Temporal Complex Networks: Reachability, Centrality, and Robustness] (2015-10-08)
 | 2015-10-01 |  Lucas Jeub | [Generalized Communities in Networks] (2015-10-01)