Abraham Lempel
Abraham Lempel (Hebrew: אברהם למפל, born 10 February 1936) is an Israeli computer scientist and one of the fathers of the LZ family of lossless data compression algorithms.
Contents
- 1 Biography
- 2 Works
- 3 Bibliography
- 4 See also
- 5 References
- 6 External links
Biography
Lempel was born on 10 February 1936 in Lwów, Poland (now Lviv, Ukraine). He studied at Technion - Israel Ins*ute of Technology, and received a B.Sc. in 1963, M.Sc. in 1965, and D.Sc. in 1967. Since 1977 he has held the *le of full professor. Lempel is now a professor emeritus in Technion.
His historically important works start with the presentation of the LZ77 algorithm in a paper en*led "A Universal Algorithm for Sequential Data Compression" in the IEEE Transactions on Information Theory (May 1977), co-aut*d by Jacob Ziv.
He is the recipient of the 1998 Golden Jubilee Award for Technological Innovation from the IEEE Information Theory Society; and the 2007 IEEE Richard W. Hamming Medal, for "pioneering work in data compression, especially the Lempel-Ziv algorithm".
Lempel founded HP Labs—Israel in 1994, and served as its director until October 2007.
Works
The LZ77 and LZ78 algorithms aut*d by Lempel and Jacob Ziv have led to a number of derivative works, including the Lempel–Ziv–Welch algorithm, used in the GIF image format, and the Lempel-Ziv-Markov chain algorithm, used in the 7-Zip and xz compressors. The algorithms have also been used as originally published in formats such as DEFLATE, used in the PNG image format.
Bibliography
- Jacob Ziv, Abraham Lempel (May 1977). "A Universal Algorithm for Sequential Data Compression". IEEE Transactions on Information Theory. 23 (3): 337–343. CiteSeerX:10.1.1.118.8921. doi:10.1109/*.1977.1055714.
See also
- Timeline of algorithms
- Data compression
- Oblivious transfer
References
External links
- Abraham Lempel – GHN: IEEE Global History Network
- Abraham Lempel at DBLP Bibliography Server
- Technion: Computer Science Department: Prof. Abraham Lempel
- "Abraham Lempel: Senior HP Fellow". Archived from the original on July 6, 2008. Retrieved June 9, 2009.
- Abraham Lempel at the Mathematics Genealogy Project