Lloyd R. Welch
Lloyd R. Welch | |
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Born | ( 1927-09-28)September 28, 1927 |
Died | December 28, 2023(2023-12-28) (aged 96)[1][2] |
Known for | Baum–Welch algorithm, Berlekamp–Welch algorithm |
Awards | National Academy of Engineering, IEEE Fellow, Claude E. Shannon Award |
Lloyd Richard Welch (September 28, 1927 – December 28, 2023) was an American information theorist and applied mathematician, and co-inventor of the Baum–Welch algorithm and the Berlekamp–Welch algorithm, also known as the Welch–Berlekamp algorithm.
Welch received his B.S. in mathematics from the University of Illinois, 1951, and Ph.D. in mathematics from the California Institute of Technology, 1958, under advisor Frederic Bohnenblust. He worked at the Jet Propulsion Laboratory 1956–1959, Institute for Defense Analyses in Princeton, 1959–1965, and University of Southern California, 1965–1999. He was elected a member of the National Academy of Engineering in 1979 for "contributions to an understanding of possibilities, limitations, and design of communications coding for reliability, security, and synchronization".[3] He was also an IEEE Fellow, and received the 2003 Claude E. Shannon Award.
References
External links
- University of Southern California faculty web page
- Lloyd R. Welch at the Mathematics Genealogy Project
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- 1972 Claude E. Shannon
- 1973
- 1974 David S. Slepian
- 1975
- 1976 Robert M. Fano
- 1977 Peter Elias
- 1978 Mark Semenovich Pinsker
- 1979 Jacob Wolfowitz
- 1980
- 1981 W. Wesley Peterson
- 1982 Irving S. Reed
- 1983 Robert G. Gallager
- 1984
- 1985 Solomon W. Golomb
- 1986 William Lucas Root
- 1987
- 1988 James Massey
- 1989
- 1990 Thomas M. Cover
- 1991 Andrew Viterbi
- 1992
- 1993 Elwyn Berlekamp
- 1994 Aaron D. Wyner
- 1995 George David Forney
- 1996 Imre Csiszár
- 1997 Jacob Ziv
- 1998 Neil Sloane
- 1999 Tadao Kasami
- 2000 Thomas Kailath
- 2001 Jack Keil Wolf
- 2002 Toby Berger
- 2003 Lloyd R. Welch
- 2004 Robert McEliece
- 2005 Richard Blahut
- 2006 Rudolf Ahlswede
- 2007 Sergio Verdú
- 2008 Robert M. Gray
- 2009 Jorma Rissanen
- 2010 Te Sun Han
- 2011 Shlomo Shamai (Shitz)
- 2012 Abbas El Gamal
- 2013 Katalin Marton
- 2014 János Körner
- 2015 Robert Calderbank
- 2016 Alexander Holevo
- 2017 David Tse
- 2018 Gottfried Ungerboeck
- 2019 Erdal Arıkan
- 2020 Charles Bennett
- 2021 Alon Orlitsky
- 2022 Raymond W. Yeung
- 2023 Rüdiger Urbanke
- 2024 Andrew Barron
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