Paper talk @ EDBT'10: Fine-grained and efficient lineage querying of collection-based workflow provenance.

Invited talk @ ESIP summer meeting, 2009

Paper talk @ Ipaw 2010: Janus: from Workflows to Semantic Provenance and Linked Open Data

The W3C PROV standard:data model for the provenance of information, and enabler for trustworthy publicationand exchange of open data

C4Bio paper talk

ProvAbs: model, policy, and tooling for abstracting PROV graphs

Camp 4-data workshop presentation

Invited talk @Roma La Sapienza, April '07

Paper presentation @ CGW ‘06 workshop, 2006

Invited talk: Symposium on Provenance in Scientific Workflows Salt Lake City, Oct. 2008

Paper presentation: Taverna, reloaded

Invited talk @ DCC09 workshop

Tapp 13-talk

Repro pdiff-talk (invited, Humboldt University, Berlin)

Ipaw12 datalog paper talk

Paper presentation @IPAW'08

Paper presentations: UK e-science AHM meeting, 2005

Paper presentation @ SWF 2010

Invited talk at the GeoClouds Workshop, Indianapolis, 2009

Invited talk @ Cardiff University, 2008: Approximate entity reconciliation for on-the-fly integration in data mashups