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Robert Tarjan: Search Tree Mysteries
Robert Tarjan: Search Tree Mysteries
::2012/08/24::
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2
An Algorithmic View of the Universe
An Algorithmic View of the Universe
::2013/01/23::
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3
CACM August 2014 Feature Video Efficient Maximum Flow Algorithms
CACM August 2014 Feature Video Efficient Maximum Flow Algorithms
::2014/08/07::
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4
Seaholm High School
Seaholm High School's Tarzan, Saturday March 8th, 2014
::2014/03/30::
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5
Splay tree
Splay tree
::2014/11/21::
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6
Trailer - Tarzan and the Mermaids (1948)
Trailer - Tarzan and the Mermaids (1948)
::2008/03/26::
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7
Tarzan of the Apes First ever film 1918 Gordon Griffith
Tarzan of the Apes First ever film 1918 Gordon Griffith
::2008/08/18::
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8
"Tarzan - Two Worlds" Dance Break 2005
"Tarzan - Two Worlds" Dance Break 2005
::2008/11/17::
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9
OSCON 2014: Include Hack - HHVM - PHP++; Paul Tarjan, Sara Golemon
OSCON 2014: Include Hack - HHVM - PHP++; Paul Tarjan, Sara Golemon
::2014/09/04::
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10
Szeged Tarján város 1973-74
Szeged Tarján város 1973-74
::2009/06/06::
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11
COVERSHOW -The Fashion Musical, Belvarosi theatre, 2006
COVERSHOW -The Fashion Musical, Belvarosi theatre, 2006
::2010/09/13::
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12
tarjan
tarjan
::2012/08/04::
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13
HALLOWEEN MUSICAL MADNESS - The musical revue (Incl. The Rocky Horror Show), 2008
HALLOWEEN MUSICAL MADNESS - The musical revue (Incl. The Rocky Horror Show), 2008
::2010/09/13::
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14
10.7 - Computing Strong Components: Algorithm - Graph Search - [DSA 1] By Tim Roughgarden
10.7 - Computing Strong Components: Algorithm - Graph Search - [DSA 1] By Tim Roughgarden
::2013/09/28::
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15
Trailer: Tarzan 3D (2013) HD
Trailer: Tarzan 3D (2013) HD
::2014/02/04::
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16
Szent György Napok 2009 - Dancs Annamari és Tarján Pál
Szent György Napok 2009 - Dancs Annamari és Tarján Pál
::2009/04/28::
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17
rishabh tarjan
rishabh tarjan
::2012/06/25::
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18
Tarjan Alogrithm parte 1
Tarjan Alogrithm parte 1
::2015/01/20::
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19
Juan Tarjan - Me & the Devil Blues
Juan Tarjan - Me & the Devil Blues
::2011/06/17::
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20
Dancs Annamari és Tarján Pál - Egy a szívem . egy a párom operett lemez egyveleg
Dancs Annamari és Tarján Pál - Egy a szívem . egy a párom operett lemez egyveleg
::2011/06/05::
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21
Tarján: meg kell mutatnunk, hogy civilek nélkül nincs demokrácia
Tarján: meg kell mutatnunk, hogy civilek nélkül nincs demokrácia
::2013/06/27::
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22
Hegyek Királya futóverseny
Hegyek Királya futóverseny
::2012/05/05::
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23
Michael Goodson
Michael Goodson
::2013/02/19::
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24
Hegyek KirályaTarján, 2013
Hegyek KirályaTarján, 2013
::2013/05/21::
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25
Tarzan TRAILER (2013) - Animation Movie HD
Tarzan TRAILER (2013) - Animation Movie HD
::2012/10/12::
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26
Tarjan Birahang Rai
Tarjan Birahang Rai
::2015/01/21::
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27
TT nyar tarjan dora
TT nyar tarjan dora
::2012/08/24::
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28
Dancs Annamari es Tarjan Pal Keposszeallitas
Dancs Annamari es Tarjan Pal Keposszeallitas
::2008/07/20::
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29
Juan Tarjan, Alambre Gonzalez, Poncharelo y Cachin - Love Struck Baby
Juan Tarjan, Alambre Gonzalez, Poncharelo y Cachin - Love Struck Baby
::2009/08/21::
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30
Houson and Zach Interview Tarjan
Houson and Zach Interview Tarjan
::2011/11/02::
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31
Robert Kahn: A Systems Approach to Managing Distributed Information
Robert Kahn: A Systems Approach to Managing Distributed Information
::2012/08/24::
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32
Topic 14 F DFS Applications TS SCC
Topic 14 F DFS Applications TS SCC
::2013/10/24::
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33
C felnőtt Jive S.tarján 2013
C felnőtt Jive S.tarján 2013
::2013/09/27::
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34
Graph Toolkit, Software Development Project (Hasselt University)
Graph Toolkit, Software Development Project (Hasselt University)
::2011/06/13::
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35
DUMA: AZ ÉHEZŐK VIADALA - A KIVÁLASZTOTT - PART I. - Fecsegőpicsogó
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::2014/11/21::
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Haley and Liza. Gold Jive at the 2013 Tri-State Challenge
Haley and Liza. Gold Jive at the 2013 Tri-State Challenge
::2013/03/28::
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MASTERDANZOPEN 2013 - GIUSEPPE E TATIANA - PASO DOBLE
MASTERDANZOPEN 2013 - GIUSEPPE E TATIANA - PASO DOBLE
::2013/11/14::
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derwa barhalganj gorakhpur
derwa barhalganj gorakhpur
::2014/12/16::
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Karate edzés
Karate edzés
::2011/11/25::
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Andromeda Hip-hop Táncstúdió 2009 Tarján
Andromeda Hip-hop Táncstúdió 2009 Tarján
::2009/07/09::
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Parábolas do Inferno 42 - Prévia de Identidade Tarzan
Parábolas do Inferno 42 - Prévia de Identidade Tarzan
::2014/04/23::
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Catullus  -  Füst Milán drámájának rádióváltozata /hangjáték/ 1985
Catullus - Füst Milán drámájának rádióváltozata /hangjáték/ 1985
::2013/05/22::
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43
Dancs Annamari & Dj Robert Georgescu   National Tv
Dancs Annamari & Dj Robert Georgescu National Tv
::2009/05/04::
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44
Show in fata studioului Kiss cu Annamari Dancs si Robert Turcescu
Show in fata studioului Kiss cu Annamari Dancs si Robert Turcescu
::2009/08/12::
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The Faculty (3/11) Movie CLIP - Hostile Takeover (1998) HD
The Faculty (3/11) Movie CLIP - Hostile Takeover (1998) HD
::2011/10/26::
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ANNAMARI DANCS feat. DJ ROBERT GEORGESCU - CALLATIS 2009 - LIVE YOUR LIFE (CONCERT) - part. 2
ANNAMARI DANCS feat. DJ ROBERT GEORGESCU - CALLATIS 2009 - LIVE YOUR LIFE (CONCERT) - part. 2
::2009/10/10::
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Baltimora - Tarzan Boy (Valentine
Baltimora - Tarzan Boy (Valentine's Day Retro Party 2011)
::2011/02/13::
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48
História do Tarzan.wmv
História do Tarzan.wmv
::2010/12/15::
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Annamari Dancs ft. Dj. Robert Georgescu - Live your life ( Christmas Version)
Annamari Dancs ft. Dj. Robert Georgescu - Live your life ( Christmas Version)
::2009/12/23::
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Dancs Annamari - SYLVIA BELÉPŐJE Csárdáskirálynő
Dancs Annamari - SYLVIA BELÉPŐJE Csárdáskirálynő
::2009/08/16::
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From Wikipedia, the free encyclopedia
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Robert Endre Tarjan
Bob Tarjan.jpg
Born (1948-04-30) April 30, 1948 (age 66)
Pomona, California
Fields Computer Science
Institutions Cornell
Berkeley
Stanford University
New York University
Princeton University
Hewlett-Packard
Microsoft
Intertrust
Alma mater Caltech,
Stanford
Thesis An Efficient Planarity Algorithm (1972)
Known for Algorithms and data structures
Notable awards Nevanlinna Prize (1982)
Turing Award (1986)
Paris Kanellakis Award (1999)

Robert Endre Tarjan (born April 30, 1948) is an American computer scientist and mathematician. He is the discoverer of several graph algorithms, including Tarjan's off-line least common ancestors algorithm, and co-inventor of both splay trees and Fibonacci heaps. Tarjan is currently the James S. McDonnell Distinguished University Professor of Computer Science at Princeton University, and the Chief Scientist at Intertrust Technologies.[1]

Early life and education[edit]

He was born in Pomona, California. His father was a child psychiatrist specializing in mental retardation, and ran a state hospital.[2] As a child, Tarjan read a lot of science fiction, and wanted to be an astronomer. He became interested in mathematics after reading Martin Gardner's mathematical games column in Scientific American. He became seriously interested in math in the eighth grade, thanks to a "very stimulating" teacher.[3]

While he was in high school, Tarjan got a job, where he worked IBM card punch collators. He first worked with real computers while studying astronomy at the Summer Science Program in 1964.[2]

Tarjan obtained a Bachelor's degree in mathematics from the California Institute of Technology in 1969. At Stanford University, he received his Master's degree in computer science in 1971 and a Ph.D. in computer science (with a minor in mathematics) in 1972. At Stanford, he was supervised by Robert Floyd[4] and Donald Knuth,[5] both highly prominent computer scientists, and his Ph.D. dissertation was An Efficient Planarity Algorithm. Tarjan selected computer science as his area of interest because he believed that CS was a way of doing mathematics that could have a practical impact.[6]

Computer science career[edit]

Tarjan has been teaching at Princeton University since 1985.[6] He has also held academic positions at Cornell University (1972–73), University of California, Berkeley (1973–1975), Stanford University (1974–1980), and New York University (1981–1985). He has also been a fellow of the NEC Research Institute (1989–1997).[7] In April 2013 he joined Microsoft Research Silicon Valley in addition to the position at Princeton. In October 2014 he rejoined Intertrust Technologies as chief scientist.

Tarjan has worked at AT&T Bell Labs (1980–1989), Intertrust Technologies (1997–2001, 2014–present), Compaq (2002) and Hewlett Packard (2006–2013).

Algorithms and data structures[edit]

Tarjan is known for his pioneering work on graph theory algorithms and data structures. Some of his well-known algorithms include Tarjan's off-line least common ancestors algorithm, and Tarjan's strongly connected components algorithm, and he was one of five co-authors of the median of medians linear time selection algorithm. The Hopcroft-Tarjan planarity testing algorithm was the first linear-time algorithm for planarity-testing.[8]

Tarjan has also developed important data structures such as the Fibonacci heap (a heap data structure consisting of a forest of trees), and the splay tree (a self-adjusting binary search tree; co-invented by Tarjan and Daniel Sleator). Another significant contribution was the analysis of the disjoint-set data structure; he was the first to prove the optimal runtime involving the inverse Ackermann function.

Awards[edit]

Tarjan received the Turing Award jointly with John Hopcroft in 1986. The citation for the award states[7] that it was:

For fundamental achievements in the design and analysis of algorithms and data structures.

Tarjan was also elected an ACM Fellow in 1994. The citation for this award states:[9]

For seminal advances in the design and analysis of data structures and algorithms.

Some of the other awards for Tarjan include:

Patents[edit]

Tarjan holds at least 18 U.S. patents.[12] These include:

  • J. Bentley, D. Sleator, and R. E. Tarjan, U. S. Patent 4,796,003, Data Compaction, 1989[13]
  • N. Mishra, R. Schreiber, and R. E. Tarjan, U. S. Patent 7,818,272, Method for discovery of clusters of objects in an arbitrary undirected graph using a difference between a fraction of internal connections and maximum fraction of connections by an outside object, 2010[14]
  • B. Pinkas, S. Haber, R. E. Tarjan, and T. Sander, U. S. Patent 8220036, Establishing a secure channel with a human user, 2012[15]

Notes[edit]

  1. ^ http://www.intertrust.com/robert-tarjan
  2. ^ a b Shasha, Dennis Elliott; Lazere, Cathy A. (1998) [1995]. "Robert E. Tarjan: In Search of Good Structure". Out of Their Minds: The Lives and Discoveries of 15 Great Computer Scientists. Copernicus/Springer. pp. 102–119. ISBN 978-0-387-97992-2. OCLC 32240355. 
  3. ^ "Robert Tarjan: The Art of the Algorithm". Hewlett-Packard. Retrieved 2010-09-05. 
  4. ^ "Robert Endre Tarjan". Mathematics Genealogy Project. Retrieved 2008-01-09. 
  5. ^ Robert, Tarjan. "Curriculum Vitae". 
  6. ^ a b "Robert Endre Tarjan: The art of the algorithm (interview)". Hewlett-Packard. September 2004. Retrieved 2008-01-09. 
  7. ^ a b c d e f Turing award citation, ACM, retrieved 2014-01-19.
  8. ^ Kocay, William; Kreher, Donald L (2005). "Planar Graphs". Graphs, algorithms, and optimization. Boca Raton: Chapman & Hall/CRC. p. 312. ISBN 978-1-58488-396-8. OCLC 56319851. 
  9. ^ http://www.acm.org/awards/fellows_citations_n-z/tarjan.html
  10. ^ Nevanlinna prize winners, International Mathematical Union, retrieved 2014-01-19.
  11. ^ http://media.caltech.edu/press_releases/13332
  12. ^ http://www.cs.princeton.edu/~ret/Vita2012A1.pdf
  13. ^ http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4,796,003.PN.&OS=PN/4,796,003&RS=PN/4,796,003
  14. ^ http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7,818,272.PN.&OS=PN/7,818,272&RS=PN/7,818,272
  15. ^ http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8220036.PN.&OS=PN/8220036&RS=PN/8220036

References[edit]

External links[edit]

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