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  • Oct
    6

    IEMS Seminar | Variance-reduced first-order methods for constrained stochastic and finite-sum optimization | Zhaosong Lu

    Department of Industrial Engineering and Management Sciences (IEMS)

    11:00 AM A230, Technological Institute

    EVENT DETAILSmore info

    Abstract: We consider stochastic and finite-sum optimization problems with deterministic constraints. Existing methods typically focus on finding an approximate stochastic solution that ensures the expected constraint violations and optimality conditions meet a prescribed accuracy. However, such an approximate solution can potentially lead to significant constraint violations. To address this issue, we propose variance-reduced first-order methods that treat the objective and constraints differently. Under suitable assumptions, our proposed methods achieve stronger approximate stochastic solutions with complexity guarantees that more reliably satisfy the constraints compared to existing methods. This is joint work with Sanyou Mei (HKUST) and Yifeng Xiao (UMN).

    Bio: Zhaosong Lu is a Full Professor in the Department of Industrial and Systems Engineering at the University of Minnesota. He received his Ph.D. in Operations Research from Georgia Institute of Technology. His research focuses on the theory and algorithms of continuous optimization, with applications in data science and machine learning. Dr. Lu has published extensively in leading journals, and his work has been supported by major funding agencies, including AFOSR, NSF, and ONR. He has served on several prize committees, such as the INFORMS George Nicholson Prize Committee and the ICCOPT Best Paper Award Committee. He has also served as an Associate Editor for leading journals, including Mathematics of Operations Research, SIAM Journal on Optimization, Computational Optimization and Applications, and Journal of Global Optimization.

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    TIME Tuesday, October 6, 2026 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Nathan Keiller    nathan.keiller@northwestern.edu EMAIL

    CALENDAR Department of Industrial Engineering and Management Sciences (IEMS)

  • Sep
    14

    Welcome & Breakfast for New McCormick PhD Students

    McCormick School of Engineering and Applied Science

    9:00 AM LR2, Technological Institute

    EVENT DETAILS

    TIME Monday, September 14, 2026 at 9:00 AM - 10:30 AM

    LOCATION LR2, Technological Institute    map it

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    CONTACT Andi Joppie    andi.joppie@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science

  • Sep
    22

    Welcome & Luncheon for New Full-time Graduate Students

    McCormick School of Engineering and Applied Science

    11:00 AM Ryan Family Auditorium, Technological Institute

    EVENT DETAILS

    TIME Tuesday, September 22, 2026 at 11:00 AM - 12:30 PM

    LOCATION Ryan Family Auditorium, Technological Institute    map it

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    CONTACT Andi Joppie    andi.joppie@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science

  • Sep
    23

    Fall 2026 Classes Begin

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Wednesday, September 23, 2026

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

    CALENDAR University Academic Calendar

  • Sep
    29

    IEMS Seminar | A Theory of Feature Learning in Kernel Models | Feng Ruan

    Department of Industrial Engineering and Management Sciences (IEMS)

    11:00 AM A230, Technological Institute

    EVENT DETAILSmore info

    TIME Tuesday, September 29, 2026 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Nathan Keiller    nathan.keiller@northwestern.edu EMAIL

    CALENDAR Department of Industrial Engineering and Management Sciences (IEMS)

  • Oct
    20

    IEMS Seminar | Aldo Scutari

    Department of Industrial Engineering and Management Sciences (IEMS)

    11:00 AM B211, Technological Institute

    EVENT DETAILSmore info

    TIME Tuesday, October 20, 2026 at 11:00 AM - 12:00 PM

    LOCATION B211, Technological Institute    map it

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    CONTACT Nathan Keiller    nathan.keiller@northwestern.edu EMAIL

    CALENDAR Department of Industrial Engineering and Management Sciences (IEMS)

  • Nov
    10

    IEMS Seminar | Andi Wang

    Department of Industrial Engineering and Management Sciences (IEMS)

    11:00 AM A230, Technological Institute

    EVENT DETAILSmore info

    TIME Tuesday, November 10, 2026 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Nathan Keiller    nathan.keiller@northwestern.edu EMAIL

    CALENDAR Department of Industrial Engineering and Management Sciences (IEMS)

  • Nov
    17

    IEMS Seminar | Salar Fattahi

    Department of Industrial Engineering and Management Sciences (IEMS)

    11:00 AM A230, Technological Institute

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    TIME Tuesday, November 17, 2026 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Nathan Keiller    nathan.keiller@northwestern.edu EMAIL

    CALENDAR Department of Industrial Engineering and Management Sciences (IEMS)

  • Nov
    24

    IEMS Seminar | James Kong

    Department of Industrial Engineering and Management Sciences (IEMS)

    11:00 AM A230, Technological Institute

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    TIME Tuesday, November 24, 2026 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Nathan Keiller    nathan.keiller@northwestern.edu EMAIL

    CALENDAR Department of Industrial Engineering and Management Sciences (IEMS)

  • Dec
    1

    IEMS Seminar | Rene Caldentey

    Department of Industrial Engineering and Management Sciences (IEMS)

    11:00 AM TBD, Technological Institute

    EVENT DETAILSmore info

    TIME Tuesday, December 1, 2026 at 11:00 AM - 12:00 PM

    LOCATION TBD, Technological Institute    map it

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    CONTACT Nathan Keiller    nathan.keiller@northwestern.edu EMAIL

    CALENDAR Department of Industrial Engineering and Management Sciences (IEMS)