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  • Feb
    13

    CS Seminar: Distance-Estimation in Modern Graphs: Algorithms and Impossibility (Nicole Wein)

    Department of Computer Science (CS)

    10:00 AM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    Wednesday / CS Seminar
    February 13th / 10:00 AM
    Mudd 3514

    Title: Distance-Estimation in Modern Graphs: Algorithms and Impossibility
    Speaker: Nicole Wein

    Abstract:
    The size and complexity of today's graphs present challenges that necessitate the discovery of new algorithms. One central area of research in this endeavor is computing and estimating distances in graphs. In this talk I will discuss two fundamental families of distance problems in the context of modern graphs: Diameter/Radius/Eccentricities and Hopsets/Shortcut Sets.

    The best known algorithm for computing the diameter (largest distance) of a graph is the naive algorithm of computing all-pairs shortest paths and returning the largest distance. Unfortunately, this can be prohibitively slow for massive graphs. Thus, it is important to understand how fast and how accurately the diameter of a graph can be approximated. I will present tight bounds for this problem via conditional lower bounds from fine-grained complexity.

    Secondly, for a number of settings relevant to modern graphs (e.g. parallel algorithms, streaming algorithms, dynamic algorithms), distance computation is more efficient when the input graph has low hop-diameter. Thus, a useful preprocessing step is to add a set of edges (a hopset) to the graph that reduces the hop-diameter of the graph, while preserving important distance information. I will present progress on upper and lower bounds for hopsets.

    Biography:
    Nicole Wein is a Simons Postdoctoral Leader at DIMACS at Rutgers University. Previously, she obtained her Ph.D. from MIT advised by Virginia Vassilevska Williams. She is a theoretical computer scientist and her research interests include graph algorithms and lower bounds including in the areas of distance-estimation algorithms, dynamic algorithms, and fine-grained complexity.

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    TIME Monday, February 13, 2023 at 10:00 AM - 11:00 AM

    LOCATION 3514, Mudd Hall ( formerly Seeley G. Mudd Library)    map it

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • May
    29

    Bagel Thursday

    Department of Computer Science (CS)

    9:00 AM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    TIME Thursday, May 29, 2025 at 9:00 AM - 11:00 AM

    LOCATION 3514, Mudd Hall ( formerly Seeley G. Mudd Library)    map it

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • May
    29

    Computer Science End of Year Awards

    Department of Computer Science (CS)

    2:30 PM Cohen Commons, Technological Institute

    EVENT DETAILS

    TIME Thursday, May 29, 2025 at 2:30 PM - 4:00 PM

    LOCATION Cohen Commons, Technological Institute    map it

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • Jun
    4

    CS Seminar: Reusing Deep Learning Models: Challenges and Directions in Software Engineering: An Update (George K. Thiruvathukal)

    Department of Computer Science (CS)

    12:00 PM

    EVENT DETAILS

    TIME Wednesday, June 4, 2025 at 12:00 PM - 1:00 PM

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • Jun
    5

    Final Project Demos- Mobile and Ubiquitous Computing Class

    Department of Computer Science (CS)

    9:30 AM

    EVENT DETAILS

    TIME Thursday, June 5, 2025 at 9:30 AM - 11:00 AM

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • Jun
    15

    2024-2025 Commencement Ceremony

    University Academic Calendar

    All Day

    EVENT DETAILSmore info

    TIME Sunday, June 15, 2025

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

    CALENDAR University Academic Calendar

  • Jun
    16

    Northwestern Engineering PhD Hooding and Master's Degree Recognition Ceremony

    McCormick School of Engineering and Applied Science

    9:00 AM 2705 Ashland Ave

    EVENT DETAILS

    TIME Monday, June 16, 2025 at 9:00 AM - 11:00 AM

    LOCATION 2705 Ashland Ave   

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    CONTACT Northwestern Engineering Events    northwestern-engineering-events@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science

  • Jun
    16

    Northwestern Engineering Undergraduate Convocation

    McCormick School of Engineering and Applied Science

    2:00 PM 2705 Ashland Ave

    EVENT DETAILSmore info

    TIME Monday, June 16, 2025 at 2:00 PM - 4:00 PM

    LOCATION 2705 Ashland Ave   

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    CONTACT Northwestern Engineering Events    northwestern-engineering-events@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science