Arindam Khan
@arindamkhan
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CS Prof. at IISc Bangalore; Past: @GeorgiaTech @IITKgp Interested in Algorithms, Optimization, AI/ML Theory.
Bengaluru, India
Joined July 2009
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Last Seen Profiles
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As an academic, professionally 2 things matter to me: research & teaching.
Factors that I consider:
Research: a) Ecosystem/infrastructure, b) students, c) collaborators, d) grants, e) academic freedom and time.
Teaching: a) novelty, b) reach, c) impact.
Let me elaborate.
(1/n)
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PhD Student Debajyoti Kar (advised by
@BarmanSiddharth
and me) wins Google PhD Fellowship. He is 1 of 8 recipients (1 of 2 in Algorithms & Theory) from India.
Debajyoti is my 3rd PhD student to win Google Fellowship, after
@vishakha299
& KVN Sreenivas.
Thanks Google!
@divy93t
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I disagree with this myopic viewpoint.
Let the students choose what is best for them.
For some it may be the USA, for some, it can be India.
Just because an excellent student may want to explore other opportunities, it is borderline unethical to refuse to write a letter.
(1/n)
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One of the best resources to learn about Advanced Algorithms:
Video lectures by
@anupamg
(CMU).
Webpage:
Notes from a previous offering:
Videos:
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With
@JeffDean
(Head of
@GoogleAI
) & IISc Algorithms and ML Theory Group (
@BarmanSiddharth
,
@saladi_rahul
,
@today_itself
) at Research@ Google.
Jeff stressed the importance of fundamental research and how theory and practice go hand in hand!
(1/2)
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New book on Introduction to Probability for Computing by Prof. Mor Harchol-Balter (CMU).
Many new interesting topics are covered: z-transforms, statistical inference, Laplace transforms, etc.
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Excellent article on "false love for AI/ML" by Prof. Smruti Sarangi
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As a Ph.D. student, I felt honored when some spam emails (mostly Indian undergrads asking for internships) addressed me as Professor.
As a Prof., I feel happy (and young) when the security assumes me to be a Ph.D. student. 😂😅
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I have this map in my lab (Algorithms, Complexity, and Optimization Lab)
@IIScCSA
, depicting the hometowns of 35 students/interns/postdocs. They come from 13+ states and speak 10+ different "natural" languages.
India -- unity in diversity.
Happy Independence Day!
🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳
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Both India and US provide unique opportunities.
Nothing is wrong or right. It is a personal choice.
I moved back to India after 9 years abroad (5 in USA, 3.5 in Swiss+Germany, been to 30-35 countries). Professionally and personally, life at India made me happier and complete.
It just takes one trip back home for any NRI who - swayed by emotion & some patriotism - contemplates to move back to India. Just one trip to cancel any such thoughts.
Our eyes are usually numb to the squalor on the streets, but it’s super stark for someone who just came back.
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Interested in any of the topics:
CS/AI/ML?
Science Communication? Education?
Comics? Puzzles? Paradoxes? Juggling & Games?
Register for the "Art of Computing" workshop, a unique Walmart CSR Initiative, at IISc on Feb 17-18.
Great food! Excellent talks! Please register (for
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Walmart Centre at IISc will focus on solving foundational problems in AI/ML, Computer Systems, and Theoretical Computer Science.
It aims to attract top Indian researchers by offering fellowships to talented Predoc, PhD, & Postdoc candidates. The center also plans to cultivate
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My PhD Advisor Prof. Prasad Tetali is turning 60 this year. Prasad is currently the the Chair of Math at
@CarnegieMellon
.
This weekend Georgia Tech is hosting a workshop TetFest60: Probabilistic Trajectories in Algorithms and Combinatorics:
(1/n)
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Finished teaching 3 weeks of "Geometric Approximation Algorithms" for the Approximation Algorithms course.
Lecture videos/notes are available at:
(1/n)
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I will speak on "Algorithms under Uncertainty" (29th Jan, 10:30 am-12:00 pm IST) in the track "Foundations of Machine Learning" in Google Research Week 2023.
Let's catch up if you are around.
#algorithms
#theory
#machinelearning
#research
#google
#AIML
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Delighted to share that my Ph.D. student Venkata Naga Sreenivasulu Karnati (KVN) is a recipient of the prestigious Google Ph.D. Fellowship 2022.
Google Ph.D. fellowship is given to around 50 Ph.D. students (worldwide) working in computer science and allied areas. (1/n)
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The Algorithms group at IISc is looking to recruit multiple PhD students in this cycle (starting August 1). The deadline to apply for the same is April 8.
Research areas include approximation/online algorithms, algorithmic game theory, theoretical ML, computational geometry,
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The Japanese word "Tsundoku" means acquiring reading materials but letting them pile up without reading them. It combines tsunde-oku (pile things up & leave) and dokusho (reading).
An apt word to depict an academic life that revolves around procrastination and reading.
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My office
@IIScCSA
.
@lucindaedoyle
Added a new lamp to my office. As academics we spend so much time in our offices, why not make them cosy? ☕️ I love seeing what people have done with their workspace. Anyone want to share?
@AcademicChatter
#AcademicTwitter
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First class of Design and Analysis of Algorithms
@IIScCSA
Working with "bounded space" -- students are trying "resource augmentation."
#algorithms
#cs
#semester
#iisc
#bangalore
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Walmart Center at IISc supports postdocs/PhD/predoc positions in Algorithms & Theory (approximation algorithms, game theory, computational geometry, online/dynamic algorithms, data structures, and ML theory), please apply:
#Theory
#Algorithms
#ML
#IISc
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GPT-4 scored 39/60 in the Randomized Algorithms Finals at IISc!
Continuing our adventure of making chatbots (on steroids) take graduate-level exams, this time we tested GPT-4 on our finals. Thanks to
@neeldhara
who has kindly helped me with this.
(1/3)
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Happier version with the poster.
Presenting a poster first time after PhD 😀
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Poland after six years!
Attending Highlights of Algorithms (HALG) 2024.
Gave a talk and presented a poster on our SODA'24 paper on online bin packing.
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I agree that it takes a lot of effort to train UGs. However, this is a voluntary service. One should clearly mention their objective at the beginning. We should focus on making student's experience better at the Indian institutes and many of them will probably stay back. (2/n)
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This SODA paper (with UG student Anish Hebbar and PhD student KVN Sreenivas) made me really happy. Though many researchers take pride in paper counts and citations, I feel nothing can beat the thrill of making progress on your favorite problems.
(1/n)
The paper titled "Bin Packing under Random-Order: Breaking the Barrier of 3/2" authored by Anish Hebbar, Arindam Khan, and K. V. N. Sreenivas, has been accepted for publication at the ACM-SIAM Symposium on Discrete Algorithms (SODA 2024).
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Today we had a great seminar series at IISc in honor of the 70th Birthday of Prof. Ravi Kannan.
(1/2)
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Avi Wigderson wins Turing Award!
Stat 1: The volume and diversity of his work is mind-boggling. Avi has 103 papers in STOC/FOCS, nobody else has even 60 papers.
Stat 2: The hit rate of Nevanlinna prize winners getting Turing is really high. Three out of Four!
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Prof. Michael Jordan from UC Berkeley gave an inspiring talk today at
@IIScCSA
on research problems at the intersection of computer science, stats, and econ.
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For Indian students considering MS in the USA.
Make an informed decision.
Winter is coming for Indian Masters students in the US this year.
~50,000-65,000 Indian Masters students in CS are going to graduate looking for tech jobs that *most* will NOT find.
This is the single largest international student subgroup in the US.
THREAD
🧵
1/7
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Eva Tardos gave a great Knuth prize lecture today. From Kleinberg-Tardos textbook, to Lenstra-Shmoys-Tardos, Plotkin-Shmoys-Tardos, and many more seminal results --- she has impacted all algorithms students and researchers.
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Finished writing 60+ letters for 8 students applying for graduate studies in theory CS this year.
Some of them got 1cr+ packages in placements, and some did not even seat for lucrative placements.
Kudos to their passion and happy to be a part of their journey.
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@BarmanSiddharth
wins ACM India ECR Award!
Siddharth is one of my favorite collaborators & a great friend. Apart from being a brilliant theoretician, his taste for problems, attention to detail & presentation, and impeccable academic integrity -- fortunate to learn a lot from him
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Devastating news. The whole Theory CS (and science, in general) community will remain indebted to Simons.
It is with great sadness that the Simons Foundation announces the death of its co-founder and chair emeritus, James Harris Simons. Jim was an award-winning mathematician, a legendary investor and a generous philanthropist.
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PhD application season has arrived. Many students are wondering about doing PhD in TCS.
For them, my take on "the pros and cons of doing a Ph.D. in theoretical CS in India vs. abroad".
Comments/different perspectives are welcome.
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Even the training may be a life-changing experience for many UGs. Our students are our ambassadors. Many will become leaders in industry or academia in the future. They will contribute to the research ecosystem in India either directly or indirectly. (3/n)
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In the past years, Canada has been rejecting VISAs for students from India to present papers at top CS conferences. Now they are messing up international relationships to support the illegal immigrants in their country.
Such a strange leadership in Canada!
Canada vs India 101:
Both countries have expelled diplomats over the death of Hardeep Singh Nijjar and relations are breaking down. Here's an explanation of why India is mad and why this goes terribly for Canada
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Back at Alma-mater.
Klaus Advanced Computing building, Georgia Tech.
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Interested in working in Algorithms and Theory?
Apply to SPARKS at
@IIScCSA
:
1. Algorithmic Game Theory & Machine Learning Theory (
@BarmanSiddharth
and me)
2. Computational Geometry/Graph Algorithms (
@saladi_rahul
and me)
3. Approximation/Online Algorithms (Anand Louis and me)
(1/1) “The Department of CSA, IISc is soliciting applications for Scholars Pursuing Advanced Research in Computer Science (SPARKS) programme for 2024. Details of the programme can be found here: . Below are the highlights of the programme.
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Prof. Moses Charikar (Stanford) visited
@IIScCSA
today.
From Locally Sensitive Hashing (LSH) to SimHash --he has made pioneering contributions in theory and practice.
We had a great interactive session.
@stochastic_nir
@publishiperishi
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Double delight at AAAI'23 -- two papers are accepted!
In the first paper with Siddharth Barman, Arnab Maiti, and Ayush Sawarni, we studied multi-armed bandits under Nash social welfare function.
(1/n)
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Gödel Prize 2023!
Congrats Sebastian, Thomas, and other co-authors.
Both these results came out during my PhD. I found them to be very exciting and beautiful. In particular, Thomas's result was very surprising. (1/n)
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One of my idols joins
@IIScCSA
🙏
Welcome Prof. Jaikumar Radhakrishnan as an Adjunct Professor in the CSA Department
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@ShriramKMurthi
I have advised 30 BTech/MTechs in the last 5 years. Twenty of them have joined PhD at CMU, UIUC, UW, GaTech, EPFL, MPII, etc. Few stayed back and joined IISc. I feel genuinely happy for all of them as they chose research over instant gratification :)
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Like Neo, are you in a dilemma on how to make decisions under uncertainty?
Follow our course: Algorithms under Uncertainty.
Co-teaching with Super-Prof. Siddharth Barman.
Website:
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Packing oranges in higher dimensions!
In 1611, Kepler conjectured that the densest packing of spheres was the one we observe with oranges at the fruit shop. But proving it was a longstanding open problem. Lagrange, in the 18th century, solved it in 2D, and only in 2006, with the
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Our work on Fair Ranking and Fair Rank Aggregation got accepted in NeurIPS 2022.
This is joint work with
@diptarka1989
, Syamantak Das, and my Ph.D. student Aditya Subramanian.
#NeurIPS2022
#Fairness
#Ranking
#RankAggregation
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Discussions on Theory, LLMs, and Food 😃
With Anshumali Srivastava (
@Anshumali_
) from Rice University, MAGA
@IISc
(
@BarmanSiddharth
@saladi_rahul
and Anand Louis), and Danish Pruthi (
@danish037
).
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Group Lunch after a long time.
L to R: Aditya Lonkar, KVN, Aditya Subramanian, Vishakha, Anish, me, and Debajyoti. Many reasons to celebrate. 😇
In the last few months, (1/3)
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Interested in Quantum Computing or Blockchains (zero-knowledge proofs)?
Prof. Jaikumar Radhakrishnan, Bhatnagar prize winner and a pioneer in the field of theory CS, will deliver an amazing "fun" lecture related to this!
A discussion of zero-knowledge proofs using Sudoku as an
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Paper Deadline, Saraswati Pujo, Midterm Exam, Valentines Day. -- Eventful Day 😀
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Had a great time at Google Research Week. Many interesting discussions, interaction with passionate students and eminent researchers, and also great food 😁
Google research week started with a bang at the silicon valley of India, Bengaluru.
Day 1 had excellent talks and discussions with
@googIeresearch
senior scientists
@jainprateek_
and
@partha_p_t
,
@arindamkhan
@hstyagi
and many more
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Absolutely amazing summary of "Art of Computing" by
@ArghaManna
Recorded videos are available at:
@BarmanSiddharth
@neeldhara
@saladi_rahul
@ShriramKMurthi
@mnwsth
@WorldOfHalahala
@DebajyotiKar200
@bireswar
@arimajee
@SK_Hari001
@Aahana_V_
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What is wrong with IITs?
IITs are always in the news. Recently, for the wrong reasons.
Suicides:
Placements:
Ethics issues:
(1/n)
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"Art of Computing" starts tomorrow!
Awaiting a funfilled day with graphic novels, paradoxes, puzzles, juggling, sports, agriculture and their connections to Computer Science.
In-person attendees (with confirmed registration), see you tomorrow!
Streaming link:
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This article talks about Prof. Manuel Blum.
"Blum never criticized his students' ideas or prescribed research directions. Offering full autonomy and boundless encouragement sounded wonderful in theory, (but it also worked for him and his students)."
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In front of Theory Lab. We (Trashball Champions) won Google Games in 2013. Stickers are there even after a decade.
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We are grateful for the support!
I am one of the seven PIs in the center, along with
@BarmanSiddharth
@saladi_rahul
@GThoppe
Anand Louis, Shalabh Bhatnagar, and Sumit Kumar Mandal.
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The Sanskrit word for Research is Gaveshana (गवेषणा (गो+एषणा=cow+search) which literally means searching for cows.
Truly, searching for cows has so many things common with doing research. (1/n)
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I agree. Indian Institutions need to work a lot to ensure diversity, in terms of socio-economic background (caste/EWS), and gender.
If MIT and Ivy's can do it, why not us?
Thankfully, some efforts have started in recent years and things are improving.
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Proud advisor moment!
@ekujupr
Eklavya Sharma is selected for the Dr. MNS Swamy Medal for Best MTech (Research) Thesis 2021-2022 (Advisor: Prof. Arindam Khan)
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"Google exploreCS Research 2021: India" is supporting faculty members to provide computing research exposure to female UG students by facilitating summer research opportunities.
Interested students apply here:
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Back to Namma Bengaluru.
BLR-Tokyo-SF-Dallas-Orlando-Atlanta-Frankfurt-BLR : around the world in 27 days.
Increased my "winding number" by one. 😀
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We have a habit of correlating IITJEE success with "merit". But IITJEE success depends a lot on socio-economic privileges and supporting parents.
Rarely one will find students clearing IITJEE without proper coaching. (1/n)
Less meritocratic, haan ?
Let there be no confusion that most kids who enter IITs (or for that matter any good college) with exception of maybe 1%, could not have entered without their privilege.
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@Varun_Research
@ShriramKMurthi
Varun, I understand the frustration. However,
1. Academic relationships work well when both advisors and students are happy. If you force students to stay, they will leave research or hate their job.
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Grad student's life according to SRK's movies:
Before getting admission: Deewana
Received admission: Chamatkar
1st day as a grad student: Raju Ban Gaya Gentleman
Meeting advisor for the first time: Fan
1st week at work: Josh
First month: Pehla Nasha
(1/n)
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Congrats
@nutanlimaye
!
Oh yay!!! Congratulations
@nutanlimaye
!
This is most wonderful news, and I am so thrilled for this recognition 🎉
Thanks for all the inspiring work you do, in theoryCS and well beyond ❤️
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@IIScCSA
@iiscbangalore
Overall, apart from the personal life, the above-mentioned points made me happier in India professionally.
@sid09_singh
Hope this answers your question :)
(19/19)
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Next time I teach Depth-First-Search in an Algorithms course, I will use the line of succession to the British throne. :D
#DFS
(Death Followed by Succession)
#DFS
#Algorithms
#QueenElizabeth
#TheoryCS
#KingCharles
#Monarchy
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Nice perspective. I agree with all the points.
One can surely do a great PhD from India.
To all the prospective PhDs in/from India, before you sign up for a PhD position in the US, please carefully consider if you would do better (PhDing) in India. I sketched my experience in this blog . Feel free to send me your comments 😃
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When I attended the first edition of Highlights of Algorithms (HALG) in 2016, I was probably the only Indian student/postdoc. This time, there are around 8-9 IISc alumni (missing a few in the photo) only.
#Algorithms
#IISc
#India
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@vishakha299
defended her thesis today
@IIScCSA
.
Advised jointly by Prof. Narahari and me.
She is my first 1st PhD student and Prof. Narahari's 28th PhD student to graduate!
#ProudAdvisorMoment
#PhD
#ML
#CS
#Defense
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This week I am visiting University of California, Berkeley supported by "PolyAlg" (). PolyAlg is a collaborative center consisting of UC Berkeley, Georgia Tech, TIFR, and IISc. (1/n)
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ART OF COMPUTING. (1/n)
#iisc
#csa
#ArtOfComputing
#agriculture
Prof. Narahari starts with his talk on how algorithms and AI can help agriculture in India.
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ChatGPT and Exams!
I had chatGPT to take the final exam from Randomized Algorithms, a graduate-level course that I am teaching at IISc.
Surprisingly, chatGPT scored 20/60, probably better than the expected median score. I just gave it the latex code of the problem.
(1/n)
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List of Graduate Fellowship Opportunities
during 2023-24 Academic Year
(Mostly for CS PhD students in USA, but some are also open to international PhD students)
#CS
#PhD
#fellowships
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India is probably the best place in the world in certain subareas e.g. arithmetic/algebraic/parameterized complexity.
IISc also has a large and diverse theory group (12-14 pl). Maybe only the top 20-25 universities in USA are larger/can match such diversity and strength.
(3/n)
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"Recent Trends in Algorithms" is a forum to bring together the Indian algorithmic research community, and understand deep and insightful results from the leading experts in the area. There will be a set of expository talks, each two hours long.
Registration is open now!
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@CarnegieMellon
Prasad's first paper was with Paul Erdős. Through Prasad, I obtained an Erdős number of 2 and also became direct academic descendants of Euler, Leibniz, Laplace, Lagrange, Poisson, and others.
(Photo: Young Prasad with Erdős)
(2/n)
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@CarnegieMellon
Prasad is also an alumnus of IISc. He did his ME here and then PhD from NYU. Prasad was present on my first day at IISc (1st Jan, 2019).
Prasad gifted me a knapsack -- coincidentally, I wrote a survey paper with Prasad on multidimensional knapsack and bin packing.
(3/n)
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@peeleraja
No. I studied in a Bengali medium government school in the Hooghly district.
But South Point has 1000 students per batch, so any Bengali will know some Pointers for sure.
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@JeffDean
@GoogleAI
@BarmanSiddharth
@saladi_rahul
@today_itself
Apart from the talks and panel discussions, I really enjoyed the breakout room discussions on "Foundational AI Research".
Learned about many cool problems and interesting directions.
Thanks
@jainprateek_
@divy93t
@ManishGuptaMG1
(2/2)
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Exciting upcoming Lecture
@IIScCSA
by Prof. Jeff Ullman, recipient of Turing Award, and author of the Dragon Book and the Cinderella Book.
Professor Jeffrey D. Ullman will be delivering the Prof. I.G. Sarma Memorial Lecture on July 13th, 2023 (Thursday), 4pm, at the Faculty Hall, Indian Institute of Science
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Some of them become faculty at IISc & IITs too.
@IIScCSA
~ 50% faculty did BTech/MTech from IITs.
However, for most IIT UGs (rather most Indians), "package" & "foreign lifestyle" are the most important factors.
Unfortunately, we relate merit with exam scores & salary.
#IIT
This is a correct statement and needs more introspection and discussion. WHAT EXACTLY ARE OUR IITs DOING?
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Three papers have been selected for presentation at ICALP 2022 (Track A).
We resolved the approximability of 3 problems:
1. Online Bin Packing under IID model (APTAS).
2. d-Dim Knapsack with Hypercubes (PTAS)
3. Guillotine Strip Packing (tight 3/2-approx and PPTAS).
(1/n)
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Surprisingly, in our paper (to appear in ICALP'24), we almost resolved the problem. We give a polynomial-time approximation scheme for the problem.
This is joint work with three undergrads Aaryan (IIT Bombay), Bratin (IIT KGP), Pritam (IISER Pune), who were interns at IISc, and
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CGAL (Computational Geometry Algorithm Library: ) gets the test of time award at SoCG. As a student, I used CGAL. CGAL has had a huge influence on algorithmists and geometers over the past decades.
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@IIScCSA
@iiscbangalore
Impact: Finally, I get to teach the brightest students in India. Some come from rural India, some from marginalized backgrounds. It is fulfilling to see when these students go on to be leaders in academia and industry.
(16/n)
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Christian Coester (Oxford) gave a beautiful talk on their breakthrough result (STOC'23 best paper): randomized k-server conjecture is false.
He showed that the intuitive proof was already given by Robert Frost in his poem from 1915.
Moral: Search for proof ideas in old poems 😀
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Looking forward to attending Research
@Bangalore
event tomorrow.
Thanks
@GoogleIndia
for the invite!
@divy93t
@ManishGuptaMG1
@JeffDean
Research@ Bangalore: Charting new AI frontiers alongside the research ecosystem in India
blog.google
We are thrilled to engage with leading AI researchers and leaders at Research@ Bangalore tomorrow!
We plan to initiate a conversation about the next frontier of AI.
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