I am broadly interested in designing practical algorithms with theoretical guarantees, and analyzing existing heuristics by providing guarantees for them under real-world assumptions. I like learning new things and skills.
If you think you are working on a problem that I might find interesting, do not hesitate to reach out to me to chat about it!
| Title | Authors | Place | Year | Links |
|---|---|---|---|---|
| Learning Sparse Fixed-Structure Gaussian Bayesian Networks | Arnab Bhattacharyya, Davin Choo, Rishikesh Gajjala, Sutanu Gayen, Yuhao Wang | Artificial Intelligence and Statistics (AISTATS) | 2022 | arXiv |
| The Complexity of Sparse Tensor PCA | Davin Choo, Tommaso d'Orsi | Conference on Neural Information Processing Systems (NeurIPS) | 2021 | Video, NeurIPS, arXiv |
| Massively Parallel Correlation Clustering in Bounded Arboricity Graphs | Mélanie Cambus, Davin Choo, Havu Miikonen, Jara Uitto | International Symposium on Distributed Computing (DISC) | 2021 | Video, DISC, arXiv |
| k-means++: few more steps yield constant approximation | Davin Choo, Christoph Grunau, Julian Portmann, Václav Rozhoň | International Conference on Machine Learning (ICML) | 2020 | Video, ICML, arXiv |
| BOSPHORUS: Bridging ANF and CNF Solvers | Davin Choo, Mate Soos, Kian Ming A. Chai, Kuldeep S. Meel | Proceedings of Design, Automation, and Test in Europe (DATE) | 2019 | Paper, Code |
| Chemical Structure Elucidation from Mass Spectrometry by Matching Substructures | Jing Lim, Joshua Wong, Minn Xuan Wong, Lee Han Eric Tan, Hai Leong Chieu, Davin Choo, Neng Kai Nigel Neo | Machine Learning for Molecules and Materials (NeurIPS Workshop) | 2018 | arXiv |
| Title | Remarks | Links |
|---|---|---|
| Scribe notes for entire course | Massively Parallel Algorithms (Spring 2019) Lecturer: Mohsen GHAFFARI |
Course webpage, Notes |
| Scribe notes for entire course | Advanced Algorithms (Fall 2018) Lecturer: Mohsen GHAFFARI |
Course webpage, Notes |
| Event | Date (DD.MM.YYYY) | Topic | Remarks | Links |
|---|---|---|---|---|
| CS6220 Paper Presentation | 02.02.2022 | Triad Constraints for Learning Causal Structure of Latent Variables | Zoom talk and discussion. | Link to paper Link to slides |
| CS6101 Paper Presentation | 03.09.2021 | Online Algorithms with Advice: A Survey | Zoom talk and discussion. | Link to paper, Link to slides |
| Aalto CS Theory Seminar | 29.07.2020 | k-means++: few more steps yield constant approximation | Zoom talk. | arXiv |
| MADZ Group Meeting talk | 04.05.2020 | k-means++: few more steps yield constant approximation | Zoom talk. | arXiv |
| Reading Group on Discrete and Distributed Algorithms | 23.05.2019 | Dynamic Algorithms for the Massively Parallel Computation Model |
Whiteboard talk. Attached are some pictures.
The paper talks about maintaining an approximate MST but I think an exact MST should be doable. See write-up for a sketch. Update: There's a SPAA 2020 paper related to this! |
arXiv, pic1, pic2, pic3, pic4, pic5 |
| DSO technical sharing |
02.02.2017 | 2^{To be, or not to be?}: A look at boolean satisfiability |
State-of-the-art methods building upon DPLL and CDCL are covered. An alternative solving method (Stalmarck's method) is also discussed.
Animations and some slides removed. |
Slides |
| DSO technical sharing |
10.11.2016 | A gentle introduction to community detection |
Common methods such as graph partitioning and spectral clustering are discussed. Talk is mainly based off a survey by Santo Fortuno.
Animations and some slides removed. |
Slides |
| Place | Course | Year | Links |
|---|---|---|---|
| National University of Singapore (NUS) |
GET1031 / GEI1000 (Cross listed): Computational Thinking
Lecturers: LEONG Hon Wai and LEOW Wee Kheng |
AY 2021/2022 Sem 1 | NUSMODS |
| National University of Singapore (NUS) |
CS3230: Design and Analysis of Algorithms
Lecturer: LEE Wee Sun |
AY 2015/2016 Sem 1 | NUSMODS |
| National University of Singapore (NUS) |
GET1031: Computational Thinking
Lecturers: LEONG Hon Wai and LEOW Wee Kheng |
AY 2015/2016 Sem 2 | NUSMODS |
| National University of Singapore (NUS) |
CS2020: Data Structures and Algorithms (Accelerated)
Lecturer: Seth GILBERT |
AY 2014/2015 Sem 2,
AY 2015/2016 Sem 2 |
NUSMODS |
| National University of Singapore (NUS) |
CS1101S: Programming Methodology
Lecturers: Martin HENZ and LOW Kok-Lim |
AY 2014/2015 Sem 1 | NUSMODS |
| National University of Singapore (NUS) |
CS1231: Discrete Structures
Lecturers: Stéphane BRESSAN and Bryan Kian Hsiang LOW |
AY 2014/2015 Sem 1 | NUSMODS |
| Temasek Junior College (TJC) | Initialized and conducted a 12-week student outreach course on Computer Science | Jan 2014 - May 2014 | Some old, partial teaching material |
| Name | Remarks | Links |
|---|---|---|
| IBM Ponder This puzzles | Solutions to some IBM's monthly Ponder This puzzles that I attempted. | Github |
| Neopets Shapeshifter solver |
Used this game as a practice while learning about constraint solvers.
Wrote a JavaScript to extract the puzzle from Neopets, which can be solved by either of my 2 solvers --- One using Google's ortools, one using the MiniZinc constraint solver. |
Directory |
| Telegram Chess Bot | Learnt about the existence of Telegram bots worked. Hacked up a chess bot for fun.
Note: It requires server hosting to work. |
Github |
| Threshold Secret Sharing Schemes | Explored and implemented 3 secret sharing schemes. | Github |
| Cryptopals | Solutions to some of the Cryptopals challenges that I attempted. | Github |
| Cipher encodings | A collection of cipher encodings. | Github |
I am currently a PhD student in the School of Computing (SoC) of National University of Singapore, under the AISG PhD Fellowship Programme. I am fortunate to be advised by Arnab Bhattacharyya. Between my undergraduate and Masters studies, I worked for a while as an applied defence scientist at DSO National Laboratories on projects that lie in the intersection of A.I. and security.
