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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

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    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)

  • Oct
    23

    Application for degree due to The Graduate School to receive a degree in Fall

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    EVENT DETAILS

    TIME Friday, October 23, 2026

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

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  • Oct
    27

    AI Enabled Quality Improvement in Smart Manufacturing

    Department of Industrial Engineering and Management Sciences (IEMS)

    11:00 AM L440, Technological Institute

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    TIME Tuesday, October 27, 2026 at 11:00 AM - 12:00 PM

    LOCATION L440, 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

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

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    CONTACT Nathan Keiller    nathan.keiller@northwestern.edu EMAIL

    CALENDAR Department of Industrial Engineering and Management Sciences (IEMS)

  • Nov
    16

    Regular registration for Winter quarter begins

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    TIME Monday, November 16, 2026

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  • Nov
    17

    IEMS Seminar | Salar Fattahi

    Department of Industrial Engineering and Management Sciences (IEMS)

    11:00 AM A230, Technological Institute

    EVENT DETAILSmore info

    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
    20

    Dissertation, PhD Final Exam, and change of grade forms due to TGS for Fall PhD candidates

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    TIME Friday, November 20, 2026

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  • 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)

  • Nov
    25

    Thanksgiving Vacation begins at 6:00 PM (No classes, University offices closed)

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    TIME Wednesday, November 25, 2026

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  • Nov
    30

    Fall Classes Resume

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    TIME Monday, November 30, 2026

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  • Dec
    1

    IEMS Seminar | Rene Caldentey

    Department of Industrial Engineering and Management Sciences (IEMS)

    11:00 AM A230, Technological Institute

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

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    CONTACT Nathan Keiller    nathan.keiller@northwestern.edu EMAIL

    CALENDAR Department of Industrial Engineering and Management Sciences (IEMS)

  • Dec
    5

    Fall classes end

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    TIME Saturday, December 5, 2026

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  • Dec
    7

    Fall Exams begin

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    TIME Monday, December 7, 2026

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  • Dec
    12

    Fall exams end

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    TIME Saturday, December 12, 2026

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  • Dec
    12

    Northwestern Engineering PhD Hooding and Master's Recognition Ceremony

    McCormick School of Engineering and Applied Science

    4:00 PM Pick-Staiger Concert Hall

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    TIME Saturday, December 12, 2026 at 4:00 PM - 6:00 PM

    LOCATION Pick-Staiger Concert Hall    map it

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    CONTACT Andi Joppie    andi.joppie@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science