Martin Theobald is a Senior Researcher at the Max-Planck Institute for Informatics. He obtained a doctoral degree in computer science from Saarland University in 2006, and spent two years as a post-doc at Stanford University where he worked on the Trio probabilistic database system. Martin received an ACM SIGMOD dissertation award honorable mention in 2006 for his work on the TopX search engine for efficient ranked retrieval of semistructured XML data.