Sponsored by The Institute for Data Engineering and Science (IDEaS).
Supported by the School of Computer Science.
Welcome to the AI Seminar Series @ Georgia Tech, a seminar showcasing the latest research and developments in Artificial Intelligence. Our goal is to bring together students, postdocs, professors, and industry researchers to discuss a wide range of AI topics, including Machine Learning, Efficient AI, Symbolic AI, AI Theory, AI Systems, and the intersection of AI and Programming Languages and Software Engineering (PLSE).
Quick index and full abstracts for each talk.
I'll talk about autoformalization with "Trellis", a system to autonomously formalize math papers into Lean with LLM agents; TeX in, Lean out. I'll talk about how it works and what you can use it for. If time permits, I'll discuss some thoughts on the broader impact of LLM agents (and Lean) on our world of mathematics.
Tarski's high school algebra problem asks whether every true identity concerning addition, multiplication, and exponentiation of positive integers follows from a list of 11 elementary identities. Surprisingly, Wilkie showed that there is an identity valid over the positive integers and yet does not follow from Tarski's axioms. Gurevič gave an algebra on 59 elements that satisfies Tarski's axioms but not Wilkie's identity, and over the years several authors whittled down the size of such a countermodel, culminating in a countermodel of size 12 due to Burris and Yeats. On the other hand, Zhang proved that there is no countermodel with fewer than 11 elements. Using SAT, we prove that the smallest countermodels are of size 12, as conjectured by Burris and Yeats. Moreover, we show that there are exactly 8,957,952 countermodels on 12 elements up to isomorphism and provide a simple classification of them. Our SAT approach outperforms dedicated tools for finding countermodels in equational theories, namely Mace4 and SEM. Furthermore, using autoformalization, we prove the correctness of our main result in Lean.
Ben Przybocki is a CS PhD student at CMU, advised by Marijn Heule. His research interests include SAT encodings and computer-assisted mathematics.
Dark Matter (DM) comprises a large fraction of the universe's energy density, yet its description remains a major open problem. There are generally two routes to probe DM. The first involves purpose-built experiments or searches that assume dark matter does indeed interact non-gravitationally with the non-dark universe. The second treats gravity as the only realistic probe. In this talk, we present two projects aligned with each perspective. In the first, we build hAIthem, a framework composed of a non-literature-biased RL agent that, when coupled to LLM swarms, is capable of proposing novel DM experimental signatures. In the second, we introduce Astrolabe, a hierarchical world model for cosmology, capable of cheaply simulating the structure of the universe across a large dynamic range of scales for many dark matter models, without the need for fine-tuning.
Ibrahim Elsharkawy is a PhD student at the University of Toronto and the Vector Institute, and a researcher affiliated with Lawrence Berkeley National Laboratory's National Energy Research Scientific Computing Center (NERSC). His research interests surround generative models for physical systems. How can such models be used as unique tools for physics discovery? Does learning a distribution of physical data imply learning the underlying physical laws? Can such models be constrained and interpretable by construction? Can methods developed for interpreting these physical models be applied to generative models outside of physics?
Frontier AI systems fail often, and often silently. This talk presents our work on making them safer and more dependable by combining fast probabilistic guardrails with rigorous formal verification. We develop typicality-based methods that learn what normal, acceptable behavior looks like in representation space and use deviations from that structure to detect out-of-distribution inputs, anomalous behavior, and emerging risks across vision, language models, and large-scale AI systems, without requiring additional training or curated examples of every possible failure. We then make these ideas operational by turning them into continuous online monitors designed around real throughput, latency, and distributed-computing constraints. For higher-stakes reasoning, we connect these probabilistic signals to neuro-symbolic methods that translate reasoning into structured formal representations, post-train LLMs to use theorem provers to check and refine intermediate steps, estimate uncertainty in auto-formalization, and distinguish a solver accepting a proof from that proof actually being faithful to the original problem. We are also building a broader theorem-proving infrastructure so that these capabilities can be used and extended by the wider AI community rather than only by formal-methods specialists. Together with our work on efficient and adaptive test-time reasoning, this points toward AI systems that can recognize when something is unusual, allocate more reasoning when needed, communicate uncertainty, abstain when appropriate, and provide machine-checkable guarantees when correctness matters.
Debargha is a fourth-year PhD candidate in Computer Science at Case Western Reserve University, working under the supervision of Dr. Vipin Chaudhary. His research focuses on building robust, reliable, and scalable machine learning models. Prior to his doctoral studies, he earned his Bachelor's degree from Ashoka University, India, and has gained industry experience as a research intern at Microsoft Research and Amazon Science.
Following Mathlib's success in building a shared foundation for formalized mathematics, CSLib is a community-oriented effort to build a similar infrastructure for computer science and software in the Lean theorem prover.
In this talk, I will present CSLib's current state, including its architecture, governance, organization, and how to contribute. Rather than giving only a high-level overview, I will use minimal working examples to illustrate the library's current API. I will showcase abstractions and definitions already available, ranging from computational paradigms to modeling and programming languages, logics, algorithms, and infrastructure to verify their properties.
I will also introduce the CSLib Initiative, supported by Renaissance Philanthropy, which aims to coordinate and accelerate the development of the library and its surrounding ecosystem. I will discuss the CSLib Initiative roadmap.
Finally, I will show how CSLib is already being used beyond the library itself, through community projects, textbooks, courses, and large-scale verification efforts. These include Software Foundations in Lean, the Functional Algorithms Design and Computational Semantics with Lean, and the port of Amazon's s2n-bignum formal proofs to Lean.
Alexandre Rademaker is the Director of the CSLib Initiative at Renaissance Philanthropy. CSLib is a global open-source effort to build a library of formalized computer science in Lean. He also cooperates with NYU in DARPA's ExpMath program, which aims to accelerate mathematics research with AI.
Alexandre is also a professor at EMAp/FGV (Applied Mathematics School, Getulio Vargas Foundation), where he has been teaching for about 20 years. He worked at IBM Research for 12 years until April 2025, when he left to lead the Specification IDE project at Atlas Computing, part of the Formal Verification of Software initiative funded by Schmidt Sciences under their Science of Trustworthy AI program.
During his PhD, he held research fellowships at Microsoft Research, working with the Z3 SMT solver team, and at SRI International. He has published more than 100 papers and spent much of his career leading open-source research collaborations with international communities, working with computational linguistics and building language resources. He was publication chair of the Language Resources and Evaluation Conference (LREC) and has served on the boards of research associations in Brazil and internationally.
Alexandre received a PhD in Computer Science from PUC-Rio, where his thesis on proof theory for description logics was published by Springer, and is based in Rio de Janeiro.
We explore opportunities for delivering robust, formal guarantees for hardware and software systems using generative AI. Neural networks offer the opportunity to significantly improve the heuristic search in both formal verifiers and synthesis engines that implement guess-and-check. The neural engine delivers a guess, which is then checked formally using a sound, trusted symbolic verifier. Any counterexample is then passed back to the neural engine, and we iterate until we obtain an answer that satisfies the formal engine such as Lean. We present several instances of this approach used at Amazon for verifying hardware and software for accelerating inference and training.
Recent advances in large language models are rapidly shifting AI systems from passive assistants toward autonomous agents capable of reasoning, planning, tool use, and multi-step decision making. In this talk, I will discuss the training of modern agentic models, focusing on the intersection of reasoning language models, reinforcement learning, and software engineering agents.
The talk will cover lessons from building frontier-scale language models and deployed coding agents, including reinforcement learning with verifiable rewards (RLVR), post-training techniques, reasoning-oriented training, and synthetic data generation. I will also discuss several practical challenges in training and deploying agentic systems.
The talk aims to provide both a research perspective and a systems perspective on where agentic AI is heading next.
Young Jin Kim is a Member of Technical Staff / Senior Principal Researcher at Microsoft AI (Superintelligence lab), where he works on reasoning language models and software engineering agents. His research focuses on reinforcement learning with verifiable rewards (RLVR), agentic AI, Mixture-of-Experts systems, post-training, and large-scale LLM training.
He has contributed to multiple generations of Phi models and production AI systems powering Copilot experiences. He received his Ph.D from Georgia Institute of Technology.
Machine-learning systems are increasingly constrained not by large-scale model architecture alone, but also by the difficulty of designing, optimizing, and continuously adapting their underlying software infrastructure under various deployment scenarios. This talk examines the emerging opportunity to employ LLM agents as active autonomous system engineers rather than conventional code-generation assistants. We discuss two of our recent attempts: (i) Autopoiesis extends this idea from offline implementation to online operation: an LLM agent continuously observes serving behavior and rewrites scheduling policies as workloads and cluster conditions evolve. (ii) AVE demonstrates how domain-specific abstractions, data-flow invariants, and compiler-generated counterexamples can provide agents with sufficiently structured feedback to synthesize highly optimized GPU kernels, approaching hand-tuned performance across GEMM, attention, and Mixture-of-Experts workloads. We are also actively building AReaL-AutoPilot: an agentic control layer that translates an RL workload specification into a validated deployment plan, configures and launches the corresponding distributed RL system, monitors its execution, and progressively adapts system policies to changing models, workloads, and hardware conditions.
In July 2024, I (and my friend Juan) got into YC with a 400-line Python prototype, hosted on fly.io, with no authentication or thread safety. The prototype showed how one could generate property based tests (PBTs) using an LLM, and then execute them and use the results to review the code under test. We quickly raised a pre-seed, and scaled the product to ~150 users. We then worked through a sequence of product pivots touching on static analysis, explainable AI, SAT-solving, and more. I came out of this two-year adventure with a clear vision of how to solve the slop problem correctly, informed by my many adventures solving it incorrectly. In this talk I will explain what we tried, why it didn't work, and how to attack secure program synthesis head-on.
Generative AI systems are no longer just tools — they are becoming active participants in how people make sense of themselves, seek support, and navigate moments of vulnerability. Nowhere is this shift more consequential than in mental health, where large language models (LLMs) are increasingly mediating help-seeking, shaping perceptions of care, and producing guidance at scale. This talk positions digital mental health as a critical testbed for interrogating the foundations of generative AI, where questions of reliability, alignment, and human impact are especially salient.
Drawing on empirical research, I describe how LLMs participate in mental health discourse: as conversational agents, sources of guidance, and mediators of support. While these systems demonstrate remarkable fluency and scalability, they also exhibit important limitations: variability in correctness and consistency, cultural and therapeutic misalignment, and challenges in capturing the nuance of lived experience. I further discuss emerging risks associated with generative systems in this context, including over-reliance, sycophantic responses, and the potential erosion of human agency and social connection. These findings underscore a broader tension in generative AI: systems optimized for engagement and responsiveness may not align with the goals of care, safety, and long-term wellbeing. I conclude by outlining a human-centered foundation for generative AI — one that foregrounds identity, agency, and institutional context, and advances toward systems that are not only capable of generating language, but are accountable to the human conditions they shape.
Munmun De Choudhury is J. Z. Liang Professor at the School of Interactive Computing and Co-Lead of Patient-Centered Care Delivery at the Children's Healthcare of Atlanta-Pediatric Technology Center in Georgia Institute of Technology. Dr. De Choudhury is known for her contributions to the fields of computational social science, human-computer interaction, and digital mental health. Through fostering interdisciplinary collaborations, Dr. De Choudhury and her collaborators have contributed significantly to advancing the development of computational techniques for early detection and intervention in mental health, as well as in unpacking how social media use benefits or harms mental well-being.
De Choudhury's contributions have been recognized through awards like the 2023 SIGCHI Societal Impact Award, the 2023 ICWSM and the 2022 Web Science Trust Test-of-Time Awards, the 2021 ACM-W Rising Star Award, as well as nearly two dozen paper awards. In 2024, she was inducted into the SIGCHI Academy and in 2025 was named an ACM Distinguished Member. Beyond her academic contributions, Dr. De Choudhury is a persistent contributor to policy-framing and advocacy initiatives, and is frequently sought for expert advice to governments and media. Notably, Dr. De Choudhury was an invited contributor to the Office of U.S. Surgeon General’s 2023 Advisory on The Healing Effects of Social Connection. Currently, she serves as a member of the Technical Advisory Group of the Commission for Social Connection at the World Health Organization and also advises the World Bank.
In 2015, I led the team at Microsoft that worked with the BBC and technical partners, including ARM, Nordic, Lancaster University, and Farnell, to deploy one million BBC micro:bits to all 5th graders in the UK. This effort was successful and led in 2016 to the creation of the non-profit Micro:bit Educational Foundation (https://microbit.org) as well as Microsoft MakeCode (https://www.makecode.com). Today, through our joint efforts, over 11 million micro:bits have been distributed to over 85 countries, reaching over 70 million children. The micro:bit ecosystem that makes this possible consists of hardware, open-source software, accessory vendors, content providers, and more.
The Foundation’s charter is to “inspire every child to create their best digital future”. The recently announced Micro:bit Research and Innovation Lab (MIRL) complements the Foundation work via its three “pillars”: (1) expanding the micro:bit community outside of computing education; (2) performing studies to better understand how people use the micro:bit; (3) forwarding the state of the art in the platform, both the hardware and software stack. The MEF and MIRL’s work focuses on physical computing projects that connect computing to the real world, showing how computing concepts integrate into the many systems that humanity depends on.
In this talk, I'll briefly review the last 10 years of the BBC micro:bit and then look ahead to the next 10 years. One of the aspects of the micro:bit platform that I am most excited about is that it enables students to experience computing systems and the many foundational concepts associated with them “in miniature”, that is, in an environment that is designed to be low-cost, reliable, modular, safe, and simple to get started with, but with many progression pathways. I'll review two exciting projects: micro:bit apps (https://microbit-apps.org), which makes use of display shields and MakeCode to enable the creation of apps for cross-curricular activities, and Jacdac (https://aka.ms/jacdac), a plug-and-play system to extend the capabilities of the micro:bit.
Associate Professor
https://eiclab.scs.gatech.edu/
Research Areas: Efficient machine learning through cross-layer innovations
Professor
Research Areas: SAT/SMT solvers, combinations of machine learning and automated reasoning, AI, software engineering, security, combinatorial mathematics, automated scientific discovery