Resume
(contains links to actual papers)
Name :
MohammadTaghi Hajiaghayi
Personal Information:
Birth year: 1979
Office :
Room.
2-088, Dept. of Mathematics, MIT
Room 32-G596, MIT CSAIL, Phone (617) 253-6182
Residence: 550 Memorial Dr.
Apt 21E-3
Cambridge, MA 02139, USA
Phone : (617) 225-1257
Email : hajiagha@theory.csail.mit.edu
(Permanent
Email)
hajiagha@mit.edu
hajiaghayi@yahoo.com
Homepage : http://www.mit.edu/~hajiagha
Current Position : Ph.D.
Candidate in the Theory of
Computation
Group at Computer
Science
and Artificial Intelligence Laboratory (CSAIL),
MASSACHUSETTS
INSTITUTE
OF TECHNOLOGY
Education :
Sep 1997- Sep 2000 B.Sc. in Computer Engineering, Sharif
University
of Technology, Tehran, Iran.
GPA : 18.76 out of 20.00
Rank in class : 1.
B.S Project : Pseudo-Matching and Multicasting.
Advisor : Dr. M. Ghodsi
Relevant courses work:
Advanced Graph
Algorithms, Combinatorics, Digital
Design,
Formal Language and Automata Theory, Parallel Algorithms,
Computational omplexity Theory, Artificial
Intelligence, Compilers, O/S, networking,
and Databases.
Sep 2000- Sep 2001 M.Sc in Computer Science, University of
Waterloo,
Ontario, Canada.
GPA : 5.0 out of 5.0
M.S Project : Algorithms for Graphs of (Locally) Bounded Treewidth
Supervisor : Prof. N. Nishimura
Relevant courses work:
- Advanced Algorithms
- Combinatorial Optimization
- Computational Complexity Theory
- Topics in Software Design, Concentrating on
Software Architecture
- Advanced Topics in Databases:
Text-Dominated
Databases
Sep 2001- Present Ph.D. Candidate in Applied Mathematics, joint
with
Theory of Computation Group in Laboratory for Computer Science, M.I.T.
GPA : 5.0 out of 5.0.
Supervisors: Prof. Erik D. Demaine and Prof. Tom Leighton
Relevant courses work:
- Adv Topics: Computer Graphics
- Distributed Algorithms
- Advanced Algorithms
- Seminar in Combinatorics
- Advanced complexity theory
- Geometric Computation
- Spec Topics in Mathematics: Internet
Research
Problems
- Spec Seminar in Operations Research: Theory
of Scheduling
- Spec Topics in Computer Sciences:
Algorithms
for Massive
Data Sets
- Randomized Algorithms
- Research in Mathematics: Embedding into
norm
spaces
- Random Walks and Polynomial-Time Algorithms
(listener)
- Spec Topics in Computer Sciences:
Essential coding
theory (listener)
- Advanced Distributed Algorithms
(listener)
- Topics in Combinatorial Optimization
(listener)
- Electronic Market Design (listener)
- Microeconomic Theory (listener)
Collaborators:
Noga
Alon, Baruch Awerbuch, Minoru Asada, Mihai Badoiu, Tucker R. Balch,
Mohsen Bahramgiri, Therese C. Biedl, Jonathan L. Bredin, Jonathan F.
Buss, Timothy M. Chan, Ehsan Chiniforooshan, Hamid R. Chitsaz, Don
Coppersmith, Erik D. Demaine, Martin L. Demaine, Ken Endo, Martin
Farach-colton, Uriel Feige, Fedor V. Fomin, Amirali Foroughnassiraei,
David Gamarnik, Yashar Ganjali, Navid Ghaffarzadegan, Mohammad Ghodsi,
Reza Ghorbani, Maziar Gudarzi, Mahdi Hajiaghayi, Abbas
Heydarnoori, Nicole Immorlica, Piotr Indyk, Kamal Jain, Mansour
Jamzad, Moslem Kazemi, Jeong Han Kim, Hiroaki Kitano, Robert Kleinberg,
Lap Chi Lau, K. Konwar, James R. Lee, Tom Leighton, Li E. Li, Ebadollah
S. Mahmoodian, Ion I. Mandoiu, Mohammad Mahdian, Vahab S. Mirrokni,
Farid Mobasser, Mosen E. Moghaddam, Naomi Nishimura, David C. Parkes,
Harald Raecke, Prabhakar Ragde, Daniela Rus, Amin
Saberi, Bashir S. Sadjad, Anastasios
Sidiropoulos, Gregory B. Sorkin, Peter Stone, Kunal Talwar, Dimitrios
M. Thilikos, Marina Thottan, Ruzbeh Tusserkani, Vijay V. Vazirani,
Manuela M. Veloso, Tomas Vinar, David R. Wood, Fuminori Yamasaki
Publications (See publications categorized by subject and also brief
descriptions of lots of them here)
Journal Articles:
- 17
Hajiaghayi, M.T.;
Demaine,
E.D.;
Fomin, F.V.;Thilikos,
D.;
Fixed-Parameter
Algorithms for the (k,r)-Center in Planar Graphs and Map Graphs,
ACM Transactions on Algorithms. To appear. (Initially accepted to Journal
of Algorithms, but it is moved to
TALG to support the move.) A preliminary version appeared in 30th
International Colloquium
on
Automata,
Languages and Programming (ICALP),
July, 2003, pp.
829-844.
- 16
Hajiaghayi, M.
T.;
Bahramgiri,
M.; Mirrokni, V. S.;
- 15 Hajiaghayi,
M.T; Biedl,
T;
Chan. T; Ganjali, Y; Wood, D.R.;
Balanced
vertex-orderings of graphs,
Discrete Applied Mathematics. Vol 148, No
1, pp. 27-48, 2005.
- 14 Hajiaghayi, M.T.; Demaine,
E.D.;
Thilikos, D.;
Exponential
Speedup of Fixed Parameter Algorithms for
Classes of Graphs Excluding Single-Crossing Graphs as Minors,
Algorithmica, Vol 41, No. 4, pp. 245-267, 2005. A preliminary version appeared in Annual
International Symposium on Algorithms and Computation,
November, 2002.
- 13 Hajiaghayi,
M.T.;
Demaine,
E.D.; Fomin, F.V.;Thilikos, D.;
- 12 Hajiaghayi,
M. T.; Ganjali Y.;
- 11
Hajiaghayi,M.T.; Demaine, E.D.;
- 10 Hajiaghayi,
M.T.;
Demaine,
E.D.;
Nishimura, N; Ragde, P; Thilikos, D.;
Approximation
algorithms for classes of graphs excluding single-crossing graphs as
minors
Journal
of Computer
and System Sciences, Vol 69, No. 2, pp. 166-195, 2004.
- 9 Hajiaghayi,
M. T.;
Coppersmith, D.; Gamarnik,
D.; Sorkin, G. B.;
- 8
Hajiaghayi,
M.T.;
Hajiaghayi, M.;
European
Journal of
Combinatorics,
Vol 24, No. 7, pp. 891-896, 2003. A preliminary version
appeared
in Proc. Euroconference on Combinatorics, Graph Theory and
Applications,
EuroCOMB'03, Sep. 2003.
- 7
Hajiaghayi,
M. T.;
Mahdian, M.; Mirrokni, V.S.;
- 6
Hajiaghayi,
M.T.;
Biedl, T.; Buss, J.F.;
Demaine, E.D., Demaine, M.L.; Vinar,T.;
- 5
Hajiaghai1,
M.T.; Veloso, M.; Balch, T.; Stone, P.; Kitano, H.; Yamasaki, F.; Endo,
K.; Asada, M; Jamzad, M; Sadjad, B. S.; Mirrokni, V. S.; Kazemi, M.;
Chitsaz,
H.; Heydarnoori, A.; Chiniforooshan E.;
RoboCup-2001
-The
Fifth
Robotic Soccer World Chapmpionships.
AI
magazine,
Vol. 23, No. 1, pp.
55-68, 2002.
- 4
Hajiaghayi, M.T.;
Ghodsi, M;
Mahdian,
M.; Mirrokni, V.S.;
- 3
Hajiaghayi,
M.T.; Ganjali
Y.;
Electronic
Notes in Discrete Mathematics
Vol 10,
2001. A preliminary
version appeared in Proc. Euroconference on Combinatorics, Graph
Theory and Applications, EuroCOMB'01, Sep. 2001: 158-163.
- 1 Hajiaghaee1,
M. T.; Mahmoodian, E. S.; Mirrokni, V. S.; Saberi, A.; Tusserkani;
Conference and Submitted
Papers (excluding those that have already appeared in journals)
- 35 E.D. Demaine, U. Feige, M.T.
Hajiaghayi; M.R. Salavatipour;
Combination can be
hard: approximability of the unique coverage problem, Submitted to FOCS 2005.
- 34 M.T. Hajiaghayi; Robert D. Kleinberg; Tom
Leighton; Harald Raecke;
New lower bounds for
oblivious routing in undirected graphs, Submitted to FOCS 2005.
- 33 V. Bahl; M.T. Hajiaghayi; V.S. Mirrokni;
L. Qui;
A. Saberi;
Efficient Power Assignment
in Wireless LAN, Submitted to MOBICOM 2005.
- 32 E.D. Demaine; M.T. Hajiaghayi;
Bidimensionality, mapgraphs and grid minors,
Submitted to ESA 2005.
- 31 M.T. Hajiaghayi; H. Raecke;
An O(sqrt{n})-Approximation Algorithm For
Directed Sparsest Cut,
Submitted.
- 30 M.T. Hajiaghayi; K. Jain; K. Konwar; L.C. Lau;
I.I. Mandoiu; V.V. Vazirani;
The Minimum
k-Colored Subgraph Problem in
Haplotyping and DNA Primer Selection, To be submitted to APPROX
2005.
- 29 M.T. Hajiaghayi; L.E. Li; V.S. Mirrokni; M. Thottan;
Bandwidth
Sharing
VPN Network Design for Multi-class Traffic with Application to VoIP, To be submitted to SPAA 2005.
- 28 Mohammad
T. Hajiaghayi; Jeong H. Kim;
Tight Bounds For Random MAX 2-SAT,
To be submitted to Random
Structures and Algorithms.
- 27 Jain,
K.; Hajiaghayi, M.T.;
The Prize-Collecting
Generalized Steiner Tree Problem via a new approach of Primal-Dual
Schema, Submitted, 2004.
- 26 E.D. Demaine; M.T. Hajiaghayi;
- 25 Hajiaghayi,
M.T.;
Leighton,
F.T.;
On
the max-flow min-cut ratio for directed multicommodity flows,
Submitted to Theoretical
Computer science, 2003.
See Tech. Report MIT-LCS-TR-910.
- 24 K. Jain; M.T. Hajiaghayi; K. Talwar;
- 23 J.L. Bredin; E.D. Demaine; M.T. Hajiaghayi; D. Rus;
Deploying Sensor
Nets with Guaranteed Capacity and Fault Tolerance, In Proceedings of the
6th ACM International Symposium on Mobile Ad Hoc Networking and
Computing (MobiHoc),
Urbana-Champaign, IL, May 2005, To appear.
- 22 U. Feige; M.T. Hajiaghayi; J.R. Lee;
Improved
approximation algorithms for minimum-weight vertex separators,
In Proceedings
of the
37th ACM Symposium on Theory of Computing
(STOC), Baltimore,
MD, May 21-24, 2005, To appear.
- 21 M.T. Hajiahgayi; J.H. Kim; T. Leighton; H. Raecke;
Oblivious
routing in directed graphs with random demands,
In Proceedings
of the
37th ACM Symposium on Theory of Computing
(STOC), Baltimore,
MD, May 21-24, 2005, To appear.
- 20 M.T. Hajiaghayi; R.D. Kleinberg; M. Mahdian; D.C. Parkes;
- 19 M.T. Hajiahgayi; G. Kortsarz; V. S. Mirrokni; Z.
Nutov;
Power Optimization for Connectivity
Problems,
In Proceedings
of the 11th Conference on Integer Programming and
Combinatorial Optimization (IPCO),
Berlin, Germany, June 2005, To appear. Journal version invited to Mathematical Programming, Series Bspecial
issue for selected papers from IPCO 2005.
- 18 E.D. Demaine;
M.T. Hajiaghayi;
- 17 E.D. Demaine; M.T. Hajiaghayi;
- 16 E.D. Demaine;
M.T. Hajiaghayi;
Bidimensionality:
New
Connections between FPT Algorithms and PTASs (full paper),
in Proceedings of the 16th Annual ACM-SIAM
Symposium on Discrete Algorithms (SODA), Vancouver,
British Columbia, Canada, January 23-25, 2005, To appear.
- 15 N. Alon; M. Badoiu; E.D. Demaine; M.
Farach-Colton; M.T.
Hajiaghayi; A. Sidiropoulos;
- 14 M.T. Hajiaghayi;Robert D. Kleinberg; Tom
Leighton; Harald Raecke;
Oblivious Routing on Node-Capacitated and
Directed Graphs (full paper),
in Proceedings of the 16th Annual ACM-SIAM
Symposium on Discrete Algorithms (SODA), Vancouver,
British Columbia, Canada, January 23-25, 2005, To appear.
Journal version submitted to ACM Transactions on Algorithms.
Invitation to Journal of
Scheduling special issue for
selected papers from SODA 2005 regretfully declined.
- 13 B. Awerbuch; M.T. Hajiaghayi; R.D.
Kleinberg; T. Leighton;
Online Client-Server Load Balancing Without
Global Information (full
paper),
in Proceedings of the 16th Annual ACM-SIAM
Symposium on Discrete Algorithms (SODA), Vancouver,
British Columbia, Canada, January 23-25, 2005, To appear.
Journal version submitted to Siam
Journal on Computing.
Invitation to Journal of
Scheduling special issue for selected papers from SODA 2005
regretfully declined.
- 12 Hajiaghayi,
M.T.;
Badoiu,
M; Demaine, E.D.; Indyk, P.;
- 11 Hajiaghayi,
M.T.;
Kleinberg,
R.; Parkes, D.C.;
Adaptive Limited-Supply Online Auctions (full paper),
Proc.
ACM Conference on Electronic Commerce (EC), pp. 71-80, May 17-20, 2004. New York.
- 10
Hajiaghayi, M.T.;
Demaine,
E.D.;
Thilikos, D.;
- 9
Hajiaghayi, M.T.;
Demaine,
E.D.;
- 8
Hajiaghayi, M.T.;
Demaine,
E.D.; Fomin, F.V.;Thilikos, D.;
- 7
Hajiaghayi, M.;
Immorlica, N.;
Mirrokni, V.S.;
Power
Optimization in Fault-Tolerant Topology Control Algorithms for Wireless
Multi-hop Networks,
Proceedings
of the
Ninth
Annual International Conference on Mobile Computing and
Networking
(MOBICOM),
pp. 300-312, September 15-18 2003, San Diego. Journal
version
submitted to Siam
Journal on Computing.
- 6
Hajiaghayi, M.T.;
Sorkin
G.B.;
- 5
Hajiaghayi, M.T.;
Demaine,
E.D.;
Thilikos, D.;
- 4
Hajiaghayi, M.T;
Nishimura,
N.;
- 3
Hajiaghayi,
M.T;
Jamzad,
M.;
- 2
Hajiaghai1,
M.T.; Jamzad, M; Sadjad, B. S.; Mirrokni, V. S.; Kazemi, M.; Chitsaz,
H.;
Heydarnoori, A.; Chiniforooshan E.;
- 1 Hadji
Aaghai1, T; Jamzad, M.;
Foroughnassiraei, A.; Mirrokni, V.S.; Ghorbani, R.; Heydar Noori,
A.; Kazemi, M.; Chitsaz, H.; Mobasser, F.; Ebraahimi M.; Gudarzi,
M; Ghaffarzadeganet. N.;
Thesis
- Hajiaghayi, M.T.;
Algorithms
for Graphs of (Locally) Bounded Treewidth,
M.Sc. Thesis, Department of Computer Science, University of Waterloo,
Waterloo, Ontario, Canada, September 2001.
Content of the
thesis appeared in Journal papers [8], [10] (partially), and Conference
paper [4].
- Hajiaghayi,
M.T.;
Content of the thesis
appeared in Journal paper [4].
Book
Iranian
Informatics Olympiad (in Persion) shared with V.S. Mirrokni and Y.
Ahmadi,
Young Scholars Club Pub. Sept, 2000.
Professional
Activities:
I have reviewed manuscripts for the following journals and
conferences:
Journals: Journal of the ACM, SIAM Journal on Computing, Algorithmica, Theoretical Computer Science, Journal
of Discrete Algorithms, IEEE
Transactions on
Parallel and Distributed Systems, ACM
Transactions on
Sensor Networks, Operation Research Letters, Information Processing
Letters, The Australasian Journal
of Combinatorics.
Conferences: Symposium
on Foundations of
Computer Science (FOCS), ACM Symposium onTheory of Computing
(STOC),
ACM Symposium on Computational Geometry
(SoCG),
ACM-SIAM Symposium on Discrete Algorithms (SODA),
ACM Conference on Electronic Commerce (EC), International Colloquium
on Automata, Languages and Programming (ICALP), The IEEE
Conference on Computer Communications
(INFOCOM), Workshop on
Graph
Theoretic Concepts in Computer Science (WG), Workshop on Algorithm
Engineering
and Experimentation (ALENEX)
Awards/Honours :
- Maximum number of accepted papers in SODA 2005 (five long papers).
Tie with the
maximum number from previous years due to Erik D. Demaine (SODA 2004), Uri Zwick (SODA 2002) and S. Muthukrishnan (SODA 2002).
-
Winner
of the best Engineering Challenge Award in Robocup,
2001.
-
Third rank in the Middle Size League in World RoboCup
Championship
2000 in Melbourne (see http://www.robocup2000.org).
-
First
rank in the Middle Size League in European RoboCup Championship 2000
in Amsterdam (see http://www.robocup.nl).
-
Awarded the Best
Undergraduate Prize of Sharif University of Technology
(Computer
Eng. Dep.) in 2000 for the First who has finished his
B.S. degree
in Computer Eng. Dep. of
Sharif Univ. of Tech. in three years and
who's GPA has been the most GPA in this department up to the
graduation
date.
-
Scholarship
from Canadian International Graduate Student, 2000.
-
Scholarship
from Communications and Information Technology Ontario, 2000.
-
Second rank in the ACM regional contest, Tehran,
Iran, 1999.
-
Fourth
rank in the ACM regional contest , Khanpur, India, 1999.
-
Silver
Medal in the 9th International Olympiad in Informatics (IOI'97),
South Africa, 1997.
-
Gold
Medal in 6th Iranian Informatics Olympiad, 1996.
-
Erdos
number 2! (via collaborating with Noga
Alon who is a co-author of Erdos)
Research Interests :
-
Algorithmic
Graph Theory
-
Data
Structures and Combinatorial Algorithms
-
Embeddings
and its Algorithmic Aspects
-
Distributed
and Mobile Computing
- Wireless
Sensor Networks
-
Computational
Complexity
-
Game
Theory and Auction Design
-
Combinatorial
Optimization
-
Random
Structures and Algorithms
-
Real-time
Machine Vision and Image Processing.
Research Experience:
- Short-time Research in Microsoft Research
(Silicon Valley), September 2004, Research on Auction Design.
- Research
Intern,
Microsoft Research (Redmond), Theory group,
Summer 2004, January 2004, and September 2003, January 2005,
Worked
with Kamal Jain (mentor), Jeong HanKim
(mentor), Noga Alon, and Uriel Feige on problems related to
connectivity and cut, feedback vertex set and generalized deadlock
resolution, Asymmetric TSP, Bidirected LP, generalized Steiner tree,
analyzing random walk for random SAT, random 3-SAT, probabilistic
oblivious routing, ordinal embedding, vertex separator, and wireless
networks. (see Conference paper No. 15, and all papers No. 21--31
above.
- Short-time Research in Workshop
on Triangulations of Point Sets: Applications, Structures,
Algorithms, Mathematical
Sciences Research Institute (MSRI), July
2003.
- Research Intern, IBM T. J. Watson
Research
center,
Theory of Computation group, Summer
2002, Research under mentorship of Gregory Sorkin.
Worked
on problems
related
to random satisfiability and random graphs. See the journal paper No. 9
and Research report paper No. 6 above.
- Short-time Research in Workshop on
Perfect Graphs,
American Institute of Mathematics (AIM), October-November
2002. The workshop was organized by Paul Seymour and Robin Thomas.
- Research Assistant in
Massachusetts Institute
of Technology, Fall 2002, Spring 2003, Spring 2004, Worked with
Professor Erik D. Demaine and Professor Tom Leighton.
- Research Assistant in University of Waterloo,
Fall
2000, Spring and Summer 2001. Worked with Professor Naomi Nishimura on
problems related to Interval Routing, Subgraph Isomorphism and
Algorithms
on Graphs of (Locally) Bounded Treewidth.
- Participating in Problem Solving Sessions
in
University
of Waterloo, 2000-2001 (see http://daisy.uwaterloo.ca/~eddemain/ProblemSession
for more information). (see the journal papers No. 6 and No. 13 above)
- Member of Sharif CE Middle Size RoboCup
project 1999-2000, which got many
International achievements during these years,
Section of Algorithms (see http://sharif.ac.ir/~ceinfo/robocup
for more information about this project).
- Research Assistant in Sharif University of
Technology, 1999-2000. Worked on problems related to
Parallel
Computing. See
the journal paper No. 4 above.
- Research in IPM Research Center in Iran,
1997-1999.
Worked on problems related to Advanced Graph Theory, more especially on
Uniquely List Colorable Graphs and Factors in Hypergraphs. See the
journal
paper No. 1 above.
- Scientific Committe of Iranian National
Computer
Olympiad, 1997-2000. Worked on designing problems and
organizing
national
competitions and training camps.
- Editor-in-Chief of Olympiad
Quarterly Magazine, 1998-2000.
Teaching Experience:
- Teaching Assistant of these courses:
- Numerical
Methods
of Applied Mathematics, MIT, Fall 2003.
- Numerical Analysis, MIT,
Spring
2002.
- Combinatorial Optimization,
MIT, Fall
2001.
- Data Structures and Data
Management,
University of Waterloo, Winter and Spring 2001.
- Foundations of Sequential
Programs,
University
of Waterloo, Fall 2000.
- Data structures and Algorithms,
Sharif University
of Tech., Spring 1999 & Spring 2000.
- Foundations of Computer Science
II
, Fall 1999.
- Teaching for Iranian Informatics Olympiad
Teams,
1998-2000.
Professional Memberships:
- American Mathematical Society (AMS)
- Society for Industrial and Applied Mathematics
(SIAM)
Software Skills :
Programming in
Basic,
Pascal, PC 8086 Assembly, C, C++, LISP, Prolog, Smalltalk, Maple,
Lex/Flex,
YACC/Bison, Fortran, TeX and LaTeX, PostScript, Standard ML, HTML
4,
Java, Matlab, JavaScript, Mathematica, DirectX.
Experienced in
working
on Unix, Linux and Windows Operating systems.
Current References:
At MIT:
Professor Erik Demaine,
Computer Science and Artificial Intelligence Laboratory
Massachusetts Institute of Technology
32 Vassar Street, Cambridge, MA 02139, U.S.A.
Tel: (617) 253-6871
Email: edemaine@mit.edu
Professor Tom Leighton,
Department of Mathematics and Computer
Science and Artificial Intelligence Laboratory
Massachusetts Institute of Technology
32 Vassar Street, Cambridge, MA 02139, U.S.A.
Tel: (617) 253-3037
Email: ftl@math.mit.edu
At Microsoft
Research
Dr. Jennifer T. Chayes,
Manager of the Theory Group
Microsoft Research
One Microsoft Way, Redmond, WA 98052, U.S.A.
Tel: (425) 703-9570
Email: jchayes@microsoft.com
Dr.
Kamal Jain,
Microsoft Research
One Microsoft Way, Redmond, WA 98052, U.S.A.
Tel: (425) 705-9765
Email: kamalj@microsoft.com
At Harvard University:
Professor David C. Parkes,
Division of Engineering and Applied Science
Harvard University
33 Oxford Street, Cambridge, MA 02138, U.S.A.
Tel: (617) 384-8130
Email: parkes@eecs.harvard.edu
At Rutgers
University:
Professor Martin Farach-Colton,
Department of Computer Science
Rutgers University
Piscataway, NJ 08855, U.S.A.
Tel: (732) 445-6424
Email: farach@cs.rutgers.edu