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    • CIS Seminar: “Reliable and Socially Aligned LLMs: Are We There Yet?”

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    Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

    Large language models (LLMs) are powerful but not yet reliable: they hallucinate, misalign with human values, and struggle with social reasoning. In this talk, I will trace a path from diagnosing failure modes such as hallucinations, to uncovering the pitfalls of aligning models with noisy human preferences and diverse values, and finally to emerging frontiers […]

    Fall 2025 GRASP SFI: Tianjiao Ding, University of Pennsylvania, “Learning Parsimonious Representations for Efficient Analysis and Synthesis”

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    Levine 307 3330 Walnut Street, Philadelphia, PA, United States

    This presenter is one of the winners of the 2025 GRASP vote for internal PhD or postdoc SFI Speakers! This is a hybrid event with in-person attendance in Levine 307 and virtual attendance via Zoom.  ABSTRACT The automatic discovery of structures in data (analysis) and generation of data (synthesis) are two core problems in machine […]

    CBE Seminar: “Using NMR to Probe Functionality at Electrochemical Interfaces in Beyond Lithium Batteries” (Lauren Marbella, Columbia University)

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    Wu & Chen Auditorium

    Abstract: Beyond lithium-ion batteries, like sodium and potassium, are more abundant in the Earth’s crust and alleviate geopolitical concerns surrounding the materials inside of lithium-based batteries. However, both sodium and potassium batteries display unique interfacial chemistry that develops during electrochemical cycling in conventional electrolytes, preventing performances that are on par with current lithium systems. In […]

    The Penn AI Symposium: Global Ideas Shaping Humanity

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    Jon M. Huntsman Hall 3730 Walnut Street, Philadelphia, PA, United States

    The inaugural Penn AI Symposium is a landmark event that gathers leading thinkers who will share their explorations at the frontiers of artificial intelligence. The symposium is hosted by Penn AI, a University-wide initiative driving responsible AI innovation at Penn. The launch of Penn AI and the upcoming symposium signal a new chapter in Penn's commitment […]

    Climate Week at Penn

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    Now in its sixth year, Climate Week at Penn offers opportunities for every member of the Penn community to learn about and act on the climate crisis. The theme for 2025 is “Hot Spots,” be they literal (wildfires and extreme heat) or figurative (political, cultural, interpersonal, or scholarly hot topics). The Climate Week core organizing […]

    ESE Ph.D. Thesis Defense: “Safeguarding AI Systems Against Unexpected Inputs”

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    Greenberg Lounge (Room 114), Skirkanich Hall 210 South 33rd Street, Philadelphia, PA, United States

    Artificial intelligence systems powered by deep neural networks have achieved remarkable success across a broad range of applications. However, perturbations such as natural image corruptions or crafted malicious queries, can cause significant performance degradation. This poses severe risks in safety-critical applications, such as autonomous driving and clinical decision-making. A key vulnerability of machine learning models […]

    MEAM Seminar: “Fluids, Fingers, Fractures and Fractals: Patterns in Porous Media”

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    Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

    The displacement of one fluid by another in a porous medium gives rise to a rich variety of hydrodynamic instabilities. Beyond their scientific value as fascinating models of pattern formation, unstable porous-media flows are essential to understanding many natural and man-made processes, including water infiltration in the vadose zone, carbon dioxide injection and storage in […]

    ESE Guest Seminar: “Post-Moore Datacenters Are Hot Beyond Belief”

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    Amy Gutmann Hall, Room 306 3317 Chestnut Street, Philadelphia, PA, United States

    Datacenters are the pillars of a digital economy and modern-day global IT services. The building blocks for today's datacenters are cost-effective volume servers that find their roots in the basic hardware and OS organization of the desktops of 90s with a fundamental mismatch with workloads and services. Meanwhile, there are several technological trends (e.g., slowdown […]

    Fall 2025 GRASP SFI: Rao Fu, Brown University, “From Words to Worlds: Bridging Linguistic and Spatial Physical Intelligence”

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    Levine 307 3330 Walnut Street, Philadelphia, PA, United States

    This is a hybrid event with in-person attendance in Levine 307 and virtual attendance via Zoom.  ABSTRACT Artificial intelligence has achieved remarkable advances in linguistic intelligence, enabling machines to process and generate language proficiently. Yet to truly assist people in everyday life, machines must also develop spatial physical intelligence—the ability to perceive, interpret, and act […]

    CBE Seminar: “Electrochemical Ion Pumping: Concept, Theory, and Application” (Shihong Lin, Vanderbilt University)

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    Wu & Chen Auditorium

    Abstract: Advancements in electrochemical separation have paved the way for innovative approaches to address critical challenges in water treatment and resource recovery. In this seminar, I will introduce the Electrochemical Ion Pumping (EIP) platform, a transformative new approach to electrochemical separation that addresses the inherent limitations of conventional capacitive deionization and electrosorption. EIP leverages circuit-switching-induced […]