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Warren Teitelman
Warren Teitelman (1941 – August 12, 2013) was an American computer scientist known for his work on programming environments and the invention and first implementation of concepts including UNDO, REDO, spelling correction, advising, online help, and DWIM (Do What I Mean).
== Early career and ARPANET ==
Warren Teitelman presented a novel scheme for real time character recognition in his master's thesis submitted in 1963 at MIT. A rectangle, in which a character is to be drawn, is divided into two parts, one shaded and the other unshaded. Using this division a computer converts characters into ternary vectors (a list composed of 3 values, 0, 1, or -) in the following way. If a pen enters the shaded region, a 1 is added to the vector. When the unshaded region is entered, a 0 is appended.〔(【引用サイトリンク】title=Discovering Good Regions for Teitelman's Character Recognition Scheme )〕 The thesis continued to be cited for several decades after its submission.
He started as ARPA Principal Investigator from 1968 to 1978, and was responsible for the design and development of BBN LISP at Bolt, Beranek, and Newman, developing the idea of a programming system for a personal computer.〔(【引用サイトリンク】title=The BBN LISP system )〕〔(【引用サイトリンク】title=Warren Teitelman et al. Interlisp Reference Manual. October 1978. )〕 He used the ARPANET to support users of BBN Lisp at Stanford, SRI, USC, and CMU in 1970, and has been named an official ''ARPANET Pioneer'', for his contributions to its development and growth. He developed a program on the SDS 940 for Bob Kahn that allowed experimentation with various routing policies in order to see the effect on network traffic and real time monitoring of the packets.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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