Biographical sketches of authors

Andrei Z. Broder IBM Thomas J. Watson Research Center, 19 Skyline Drive, Hawthorne, NY 10532 (abroder@us.ibm.com). Dr. Broder is an IBM Distinguished Engineer and the CTO of the IBM Institute for Search and Text Analysis. From 1999 until early 2002, he was Vice President for Research and Chief Scientist at the AltaVista Company. Previously, he was a senior member of the research staff at Compaq's Systems Research Center in Palo Alto, California. He graduated summa cum laude from the Technion, the Israeli Institute of Technology, and obtained his M.Sc. and Ph.D. degrees in computer science at Stanford University under Don Knuth. His main research interests are the design, analysis, and implementation of randomized algorithms and supporting data structures, in particular in the context of Web-scale information retrieval and applications. Dr. Broder was the SIGIR (ACM Special Interest Group on Information Retrieval) keynote speaker in 2003, and is co-winner of the best paper award at WWW6 (for his work on elimination of duplicate Web pages) and at WWW9 (for his work on mapping the Web). He has published more than 70 papers and was awarded seventeen patents. He serves as the chair of the IEEE Technical Committee on Foundations of Computer Science.

Arthur C. Ciccolo IBM Thomas J. Watson Research Center, 19 Skyline Drive, Hawthorne, NY 10532 (ciccolo@us.ibm.com). Mr. Ciccolo is a Department Group Manager in the Research Division of IBM and co-leader of the IBM Institute for Search and Text Analysis. He currently has responsibility for the information and knowledge management department as well as the Research Division's world-wide strategy in the area of unstructured information management. This includes the work of several hundred researchers in the area of natural language processing (NLP), advanced search and information retrieval, text analysis, machine translation, automated document generation, and the application of human-computer-interaction User-Centered Design to a wide range of applications. Prior to assuming his current responsibilities, he served in a number of senior technical management positions, including Research Division assignee at the IBM Corporate Strategy Group in Armonk, New York, where he contributed technical expertise in the development of business strategy and plans. He has held numerous senior technical management positions within IBM Research, including the management of technical groups working in the areas of operations research, manufacturing systems, electro-optics, and robotics. Combining skills from many of these areas, he formed and served as the CEO of an internal company which developed an advanced rapid prototyping system for producing 3D physical models directly from CAD (computer-assisted design) or imaging systems. Before joining IBM Research, he held senior technical management positions at the Massachusetts Institute of Technology's instrumentation laboratory, where he was responsible for the development of advanced real-time control systems for ICBMs, aircraft, spacecraft, and satellites, and the Charles Stark Draper laboratory, where he headed the Air Force Program's computer science division. In addition, he led the lab's efforts in diversification, establishing significant businesses in manufacturing automation and manufacturing systems.