1960 - Worked for the SMART project, wrote much of their retrieval code and did many of the retrieval experiments, as well as obtaining a PhD in Chemical Physics.
1970 - Worked in the group that built Unix and I wrote Unix tools for word processing (tbl, refer), compiling (lex), and networking (uucp).
1980 - He worked on specific information systems applications, mostly with geography (a system for driving directions) and dictionaries (a system for disambiguating words in context), as well as running a research group at Bellcore.
1990 - Joined on a large chemical information system, the CORE project, with Cornell, OCLC, ACS and CAS.
1994 - He received the "Flame'' award for lifetime achievement from Usenix.
1998-2002 - He was the head of the Division of Information and Intelligent Systems at the National Science Foundation.
2005 - Elected to the National Academy of Engineering.
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