- Sep 2022: joined Meta as Research Scientist.
- Aug 2022: successfully defended my PhD thesis.
- Jan 2022: our team was among the grand prize winners in NAEP Automated Scoring Challenge. Check it out here.
- Dec 2021: paper on Differentiable Sketching in Recommender Systems has been accepted at AAAI 2022 (15% (1349/9020) Acceptance rate!).
- Nov 2021: honored to receive 2021 Duolingo Dissertation Award.
- Apr 2021: paper on computerized adaptive testing under bilevel framework has been accepted at IJCAI 2021 (13.9% Acceptance rate!).
- Apr 2021: paper on learning with noisy labels with contrastive initialization to appear at LLID Workhop at CVPR 2021.
- Dec 2020: honored to get the Best Student Paper Award at IEEE Big Data 2020.
- Nov 2020: won the personalized question selection task in NeurIPS 2020 Education Challenge. Implementation is publicly available.
- Nov 2020: paper on robust sample reweighting strategy without gold samples to appear at WACV 2021. Paper/codes will be released soon.
- Nov 2020: paper on optimal career trajectory modeling to appear at IEEE Big Data 2020. Paper/codes will be released soon.
- Sep 2020: will be serving as Program committee member for AAAI 2021 and WACV 2021 .
- Aug 2020: selected for KDD 2020 Student Award!
- May 2020: paper on knowledge tracing to appear at KDD 2020. Paper/codes/data will be released soon.
- Mar 2020: selected for SIAM SDM Student Travel Award.
- Dec 2019: paper on optimal bidding strategy to appear at SIAM SDM 2020.
- May 2019: paper on point processes to appear at ICML Time series workshop 2019.
- May 2019: will be joining Adobe Research, San Jose for internship (again).
- Sep 2018: had a great summer at Adobe Research, San Jose.
- Aug 2017: last day at Microsoft!
- Jul 2017: will be joining UMass Amherst for PhD in Computer Science.
- Feb 2017: paper on robust loss functions for deep networks to appear at AAAI 2017.
About me
I am a Research Scientist at Meta, working on data sub-sampling algorithms for Facebook Ads. Previously, I obtained my PhD in Computer Science (Machine Learning) at UMass Amherst; my PhD research was on improving data selection efficiency with differentiable optimization layers. During my PhD, I won the NeurIPS 2020 education challenge for improving question selection efficiency in computerized adaptive tests (e.g., GRE, GMAT). During my PhD, I did two research internships at Adobe Research, where I worked on optimal bidding strategy in real-time bidding systems. Before my PhD, I was a Software Engineer (Applied Scientist) at Microsoft BingAds where I had the opportunity to work on improving click performance and ad selection algorithms. Even before that, I had amazing years at the Indian Institute of Science, Bangalore (IISc), where I worked on robust learning under noisy labels. I have been fortunate to work with some amazing researchers and publish in many exciting machine learning/data mining conferences and workshops such as AAAI, CVPR, ICML, IJCAI, KDD, and SIAM SDM. I also received the Best Student Paper Award from the IEEE Big Data (2020) conference.
Research Interest
- Meta Learning, Differentiable Optimization Layers, Bi-level Optimization
- Sequential Models, Reinforcement Learning, Inverse Reinforcement Learning
- Computational Advertising, Computer Vision, NLP, AI for Social Goods
Updates
Publications
- Learning from Sequential User Data: Models and Sample-efficient Algorithms
- Aritra Ghosh.
- Doctoral Dissertation. 2023 (UMass Amherst).
- DiFA: Differentiable Feature Acquisition
- Aritra Ghosh, and Andrew Lan.
- Proceedings of the Thirty-Seventh AAAI Conference on Artificial Intelligence. 2023 (AAAI).
- Code
- DiPS: Differentiable Policy for Sketching in Recommender Systems
- Aritra Ghosh, Saayan Mitra, and Andrew Lan.
- Proceedings of the Thirty-Sixth AAAI Conference on Artificial Intelligence. 2022 (AAAI).
- Code
- Automated scoring for reading comprehension via in-context bert tuning
- Nigel Fernandez, Aritra Ghosh, Naiming Liu, Zichao Wang, BenoƮt Choffin, Richard Baraniuk, and Andrew Lan.
- Proceedings of the 23rd International Conference on Artificial Intelligence in Education. 2022 (AIED).
- BOBCAT: Bilevel Optimization-Based Computerized Adaptive Testing
- Aritra Ghosh, and Andrew Lan.
- Proceedings of the 30th International Conference on Artificial Intelligence, 2021 (IJCAI).
- Code
- Contrastive Learning Improves Model Robustness Under Label Noise
- Aritra Ghosh, and Andrew Lan.
- Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops, 2021 (CVPR WS).
- Code Video
- Option Tracing: Beyond Correctness Analysis in Knowledge Tracing
- Aritra Ghosh, Jay Raspat, and Andrew Lan.
- International conference on artificial intelligence in education, 2021 (AIED).
- Code
- Do We Really Need Gold Samples for Sample Weighting under Label Noise?
- Aritra Ghosh, and Andrew Lan.
- Proceedings of the 2021 IEEE Winter Conference on Applications of Computer Vision, 2021 (WACV).
- Code Video
- Skill-based Career Path Modeling and Recommendation
- Aritra Ghosh, Beverly Woolf, Shlomo Zilberstein, and Andrew Lan.
- Proceedings of the 2020 IEEE International Conference on Big Data (Big Data), 2020 (IEEE BigData).
- Best Student Paper Award Code
- Context-Aware Attentive Knowledge Tracing
- Aritra Ghosh, Neil Heffernan, and Andrew S Lan.
- Proceedings of the 2020 ACM SIGKDD Conference on Knowledge Discovery and Data Mining, 2020 (KDD).
- Code Video
- Optimal Bidding Strategy without Exploration in Real-time Bidding
- Aritra Ghosh, Saayan Mitra, Somdeb Sarkhel, and Viswanathan Swaminathan.
- Proceedings of the 2020 SIAM International Conference on Data Mining. Society for Industrial and Applied Mathematics, 2020 (SIAM SDM).
- Scalable Bid Landscape Forecasting in Real-time Bidding
- Aritra Ghosh, Saayan Mitra, Somdeb Sarkhel, Jason Xie, Gang Wu, and Viswanathan Swaminathan.
- Joint European Conference on Machine Learning and Knowledge Discovery in Databases. Springer, Cham, 2019 (ECML-PKDD).
- Generative Sequential Stochastic Model for Marked Point Processes
- Abhishek Sharma, Aritra Ghosh, and Madalina Fiterau.
- ICML Time Series Workshop. 2019.
- Robust Loss Functions for Deep Neural Networks
- Aritra Ghosh, Himanshu Kumar, and P. S. Sastry.
- Thirty-First AAAI Conference on Artificial Intelligence. 2017 (AAAI).
- On the Robustness of Decision Tree Learning Under Label Noise
- Aritra Ghosh, Naresh Manwani, and P. S. Sastry.
- Pacific-Asia Conference on Knowledge Discovery and Data Mining. Springer, Cham, 2017 (PAKDD).
- A Preference Approach to Reputation in Sponsored Search
- Aritra Ghosh, Dinesh Gaurav, and Rahul Agrawal.
- Proceedings of the 25th ACM International on Conference on Information and Knowledge Management. ACM, 2016 (CIKM).
- Making Risk Minimization Tolerant to Label Noise
- Aritra Ghosh, Naresh Manwani, and P. S. Sastry.
- Neurocomputing 160 (2015): 93-107.