Data Descriptors by Example has retired.

Leonard Berman joined IBM Research in 1977 after receiving his PhD in Computer Science from Cornell. During his first decade, he worked on applying methods of compiler construction to the design and verification of digital logic, served on the staff of the director of Research, and spent a year at MIT. In 1988, Dr. Berman received an OIA for his work on global synthesis algorithms. During his second decade, he focused on efficient programming techniques and algorithms for numerical problems including multipole algorithms for n-body interactions and methods for efficient simulation of financial portfolios. Today, Dr. Berman is a member of the XML/XSL Transformational Systems group and is focusing on developing methods for automatic and quasi-automatic XML DTD/Schema generation.

Angel Diaz is a member of the research staff in the Interactive Transaction Systems Department of the IBM T.J. Watson Research Center in Hawthorne, New York. He is manager of the XML/XSL Transformational Systems group and is a primary architect and developer of the IBM techexplorer Hypermedia Browser, a plug-in for Web browsers for the interactive display of scientific and technical documents. He is also a leader of several XML tools projects. Dr. Diaz received a PhD in Computer Science from Rensselaer Polytechnic Institute in 1997. He is a co-chair of the World Wide Web Consortium (W3C) Math working group and a principal writer of the Mathematical Markup Language Specification (MathML). Dr. Diaz is also a member of the Cascading Style Sheets (CSS) and Extensible Stylesheet Language (XSL) working groups (and serves as the XSL Formatting Objects Leader), and he a member of the W3C Hypertext Coordination Group.

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