Dragomir Yankov is a scientist in Contextual and Display Advertising Sciences at Yahoo! Labs. He is currently working on text categorization, document analysis and content matching of web pages and ads. Previously he has worked on time series methods for impressions forecasting, click fraud and mail spam detection.

Dragomir received his Ph.D. in Computer Science from UC Riverside with advisor Prof. Eamonn Keogh. His doctoral work focuses on robust methods for time series pattern recognition. He is interested in applied machine learning and data mining techniques.