Berkant Barla Cambazoglu received his BS, MS, and PhD degrees, all in
computer engineering, from the Computer Engineering Department of
Bilkent University in 1997, 2000, and 2006, respectively. He has then
worked as a postdoctoral researcher in the Biomedical Informatics
Department of the Ohio State University. He is currently employed as a
senior researcher in Yahoo Labs, where he is heading the web retrieval
group. He has many papers published in prestigious journals including
IEEE TPDS, JPDC, Inf. Syst., ACM TWEB, and IP&M, as well as papers and
tutorials in top-tier conferences, such as SIGIR, CIKM, WSDM, WWW, and

Lecture: Effectiveness and efficiency issues in web retrieval systems