I have joined the
Center for Evolution and Cancer as a postdoctoral researcher under
Prof. Carlo Maley.
I have never written for Tripura Info, nor made a video
presentation about
Edward Said's Orientalism.
Bots have copied some of my
comments to
spammy websites (you can tell by their complete
irrelevance).
I have nothing to do with Ruchira Software, which appears to
be a commercial blog.
I am not a radiologist.
SATCHMO-JS:
a webserver for simultaneous protein multiple sequence alignment and
phylogenetic tree construction,
by Raffi Hagopian, John R. Davidson, myself, Bushra Samad, Glen R. Jarvis,
and Kimmen
Sjölander,
in Nucleic Acids Research.
Please try the SATCHMO-JS
webserver!
PLoS
Computational Biology Conference Postcards from PSB 2010,
by myself, Matthew Lux, and Phil
Bourne,
in PLoS Computational
Biology.
Live
Coverage of Scientific Conferences Using Web Technologies,
by Allyson Lister,
myself, Oliver Hofmann, Roland Krause, Michael Kuhn, Bettina Roth, and Reinhard Schneider,
in PLoS Computational Biology.
Live
Coverage of Intelligent Systems for Molecular Biology/European Conference
on Computational Biology (ISMB/ECCB) 2009,
by Allyson Lister,
myself, Oliver Hofmann, Roland Krause, Michael Kuhn, Bettina Roth, and Reinhard Schneider,
in PLoS Computational Biology.
Berkeley PHOG: PhyloFacts orthology group
prediction web
server,
with Christopher Meacham, Bushra Samad, Christoph
Neyer, and Kimmen
Sjölander,
in Nucleic Acids Research
2009, doi:
10.1093/nar/gkp373.
Please try the Berkeley
PHOG webserver!
Finding All Nash Equilbria of a Finite Game
Using Polynomial Algebra
invited contribution to Economic
Theory, published
online February 20th, 2009.
Polynomial Graphs With
Applications To Graphical Games, Extensive-Form Games, and
Games With Emergent Node Tree Structures
on the arXiv.
Using Computer Algebra To Compute
Nash Equilibria
in the (refereed) Proceedings
of the 2003 International Symposium on
Symbolic and Algebraic
Computation.
Universality of Nash
Equilibria
in Mathematics of Operations
Research,
Volume
28, Number 3, August 2003, 424--32.
It is also on the arXiv.
An expanded version appears as
the second chapter of my Ph.D thesis.
The thesis chapter differs from the journal version
mostly by including examples,
and (I hope) by being more self-contained,
especially for those not familiar with game theory.
Executive summary: "Every shape arises in game theory."
Algebraic Methods in Game Theory
my Ph.D dissertation in mathematics;
also in PostScript
Using Computer Algebra To Compute
Nash Equilibria
my computer science master's project report;
also in PostScript
Two posts on the Official Google Blog,
Introduction
to Search Quality and
Technologies
behind Google Ranking,
explain a bit about the problems I worked on as
a software engineer in International Search Quality at Google,
working on
synonyms.
Example queries: [gudrun
thorsdottir] and Serbian [srpski]
Augmenting
queries with synonyms selected using language statistics,
U.S. Patent 7475063. Inventors: Datta, Ruchira S; Lopiano, Fabio.
Simplifying
query terms with transliteration,
U.S. Patent Application 20070288230. Inventors: Datta, Ruchira S.
Augmenting
queries with synonyms from synonyms map,
U.S. Patent Application 20070288448. Inventors: Datta, Ruchira S.
Query
language determination using query terms and interface language,
U.S. Patent Application 20070288450. Inventors: Lopiano, Fabio; Datta, Ruchira
S.
I am on the organizing committe for
Bay Area Discrete Math Day (BAD Math
Day),
and was the local organizer for the
Twelfth
BAD Math Day,
which took place on
April 15th, 2006.
You can watch
all the talks on video.
Applying High-Dimensional
Clustering Methods for Phylogenetic Profiling
slides for a talk I gave in the
Student Algebraic
Statistics Seminar at the
University of California at
Berkeley
on May 7th, 2007.
These slides have evolved from talks I gave
to the Evolution Discussion Group Seminar at UC Davis
on May 2nd, 2007,
at Virginia
Bioinformatics Institute
on April 10th, 2007,
to the Algorithms
& Theory Group at IBM Almaden
Research Center
on March 15th, 2007,
and in the Seminar Series in
BioMathematical Methodology at Stanford University
on March 6th, 2007.
Polynomial Graphs With Applications
in Game Theory
slides for a talk I gave at the
Student
Algebraic Statistics Seminar at the
University of California at
Berkeley
on December 11th, 2006.
These slides have evolved from talks I gave
at the Algebra-Geometry-Combinatorics
Seminar at San Francisco State
University
on December 2nd, 2005,
at the Algorithmic,
Combinatorial and Applicable Real Algebraic Geometry workshop at MSRI
on April
14th, 2004 (video),
to the Discrete
Math & Representation Theory Seminar at the University of California at Davis
on February 27th, 2004,
and
to the Microeconomic Theory Seminar at
the University of California at
Berkeley
on February 23rd, 2004.
I gave a talk on The
Mathematics of Web Information Retrieval (video)
at the Industrial
Problems Seminar at IMA
on February 3rd, 2006,
and to math and computer science undergraduates at SFSU
on December 2nd, 2005.
Universality of Nash
Equilibria
slides for a talk I gave at the
Math Colloquium at
Santa Clara University
on April 19th, 2005.
These slides are very similar to the slides for the talks I
gave
to the Algorithms
& Theory Group at IBM Almaden
Research Center
on March 15th, 2007,
at the Tulane
Math Colloquium at Tulane
University
on February 3rd, 2004,
to the Math
Colloquium at the University of
Arizona
on January 22nd, 2004,
to the Algebraic Geometry Seminar at Georgia Tech
on November 14th,
2003,
to the Theory Group at
Microsoft Research
on March
5th, 2003,
at MSRI
on March
3rd, 2003,
to the Computational
Algebra Seminar at
the University of
California at Berkeley
on January 28th, 2003,
to the Combinatorics Seminar
at the
University of Minnesota
on September
20th, 2002,
and at
Symbolic Computational
Algebra 2002
at University of Western Ontario
on July 17th, 2002.
PHIL: The Probabilistic Hierarchical Inferential
Learner
slides for a talk I gave on April 9th, 2005 at the
Tenth Bay Area
Discrete Math Day
held at San Jose State
University.
Stochastic Stability In
Evolutionary Game Theory,
slides introducing discussion of
The
Evolution of Conventions and
Stochastic
Evolutionary Game Dynamics
on July 29th, 2003 at the systems biology journal club held at
Arkin Laboratory for Dynamical
Genomics at LBL.
Leveraging Algebra and Logic To
Model Biological Systems
a paper for
CS 294, Section 8:
Computational Biology for Computer Scientists.
Computing Handelman
Representations
slides for a talk I gave at
Mathematical Theory of Networks
and Systems 2002
on August 14th, 2002.
Computing With Polynomials: A
Personal Odyssey
a paper for CS 282:
Algebraic Algorithms.
Discussion of Refactoring:
Improving the Design of Existing Code
by Martin Fowler for CS 294, Section 1:
Software Development.
I should point out that I actually think
refactoring is a very valuable activity,
which may not be evident from the presentation above.
My task
was to lead a discussion for an hour-and-a-half,
which I couldn't very well do by saying
Hey, everybody! Isn't refactoring great?
Finding Representations for Nonnegative
Polynomials
on Semialgebraic Sets
the talk I gave for my qualifying examination
and at the Informal Optimization Seminar at UC Davis.
Implementing the Wireless Token Ring Protocol on
QNX
about my work for the Communication
Systems subproject
of the Automated
Vehicle Control and Safety Systems project
of California PATH (Partners for Advanced
Transit and Highways).
Programs, Proofs, and Service
Networks
a presentation for
the MICA project, of which I
was a member.
Survey
of A Type System for
Higher-Order Modules
by Karl
Crary, Robert Harper, and Derek Dreyer,
for CS 263: Design and Analysis
of Programming Languages.
Using Semidefinite Programming for
Minimizing Polynomials
a paper for EE227A: Convex
optimization and applications
and Math 170:
Introduction to Optimization,
with utility
code in OCaml.
Modular Network
Architecture: Link Module Interface
which I presented at the
Illinois/Berkeley
Workshop on Wireless Networks and Convergence
hosted by Prof. P. R.
Kumar and his group in the
Department of Electrical and
Computer Engineering,
University of
Illinois, Urbana-Champaign.
Implementing the Wireless
Token Ring Protocol
As a Linux Kernel Module
which I did for the Wireless Token Ring
Protocol Project
of the Berkeley
Web Over Wireless Group, of which I am a member.
Survey of Using Bayesian Networks to Analyze
Expression Data
by Nir
Friedman, Michal
Linial, Iftach
Nachman, and Dana Pe'er,
for Math 290: Research Seminar
in Computational Biology.
Prof. Bernd Sturmfels (mathematics), my thesis advisor
Those "curious
about the black arts of algebra
will find that Sturmfels tells all."
-- Chris Hillman
on sci.physics.research,
May 10, 2002
Prof. Alberto Grunbaum
(mathematics)
Prof. Lior Pachter
(mathematics)
Prof. Richard Fateman (computer science), my master's
advisor
Prof. Laurent El
Ghaoui (electrical
engineering)
Prof. Shachar Kariv (economics)
Prof. Pravin
Varaiya (electrical
engineering)
Prof. Raja
Sengupta (civil & environmental
engineering)
Prof. Rekha Thomas,
Department of Mathematics,
University of Washington
Dr. John Dalbec, software
specialist, Youngstown State
University
Prof. Jesús De
Loera, Department of
Mathematics, University of California,
Davis
Dr. Birkett Huber
Prof. Serkan Hosten,
Department of Mathematics,
San Francisco State University
Prof. Diane Maclagan,
Department of Mathematics,
Rutgers University
Prof. Ezra Miller,
Department of Mathematics,
University of Minnesota
Dr. Harrison Tsai
Prof. Laura Matusevich,
Department of Mathematics,
University of Pennsylvania
Dr. Michael Develin, AIM Postdoctoral
Fellow, MSRI
Dr. Amit
Khetan, NSF Postdoctoral Fellow, Department of Mathematics,
University of Massachusetts at
Amherst
Dr. Seth Sullivant,
Junior Fellow in the Harvard
Society of Fellows, Harvard
University
Dr. Chris Hillar, NSF Postdoctoral Fellow, Department of Mathematics, Texas A&M University
Dr. David Speyer, Clay Research
Fellow, Department of
Mathematics, University of
Michigan
Dr. Jiawang Nie
Dr. Nicholas Eriksson, NSF Postdoctoral Fellow, Department of Statistics, Stanford University
My sister, Saheli S. R. Datta,
who majored in physics at UC Berkeley
and got her master's in
journalism from
Columbia University School of Journalism,
has an interesting blog.
She is a writer-reporter for Business 2.0
magazine,
where she also has a professional blog.
Mathematical Preprints Servers
The Mathematical Atlas
Mozilla Includes
MathML
Objective Caml, or OCaml is a dialect of
the Caml language,
a fast modern
functional programming language with type inference,
which supports object
orientation.
I am one of the coordinators of the volunteer translation
project
which has translated
Développement
d'applications avec Objective Caml,
the French OCaml book published by O'Reilly France,
into Developing applications with
Objective Caml, its English version.
Both versions can be read on the
Web.
My Erdős number is 4.
What Do These People Have In Common?
Demain, dès l'aube by
Victor Hugo