News & Events
Department Events & Announcements

Events

  • Apr
    23

    Sergio Servantez Final Defense April 23: Large Language Models as Legal Reasoners

    Department of Computer Science (CS)

    1:30 PM 3501, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    The legal system is built upon complex bodies of written text that function as operative rules governing rights, obligations, and outcomes. Recent advances in natural language processing have created new opportunities to automate aspects of legal analysis using language models (LMs). However, these models remain fundamentally probabilistic systems optimized for statistical prediction rather than faithful rule application. As a result, they often generate fluent legal language while failing to perform the precise, multi-step reasoning required to correctly interpret and apply legal rules. This dissertation investigates how language models can be improved and rigorously evaluated as legal reasoners through the integration of symbolic representations and methods grounded in legal domain knowledge.

    Focusing on a tractable subset of legal tasks termed computational legal reasoning, this work develops neurosymbolic approaches that structure legal interpretation, rule application, and evaluation. First, it introduces a system for transforming natural language contracts into machine-readable representations through the extraction of Obligation Logic Graphs (OLGs), enabling contractual obligations to be represented as structured logical relationships and translated into executable code. Second, it presents Chain of Logic, a prompting method designed to improve rule-based reasoning in language models by decomposing compositional rules into their constituent elements before recombining the results to reach a final conclusion. Third, it introduces OpenExempt, a dynamic framework and benchmark that generates natural language legal tasks and their solutions from expert-crafted encodings of statutes and case facts, enabling fine-grained diagnostic evaluation of model behavior across controlled variations in reasoning complexity and task structure. Together, these contributions advance the study of language models as legal reasoners by introducing methods that improve interpretability, reliability, and diagnostic evaluation.

    more less

    TIME Thursday, April 23, 2026 at 1:30 PM - 3:30 PM

    LOCATION 3501, Mudd Hall ( formerly Seeley G. Mudd Library)    map it

    ADD TO CALENDAR

    CONTACT Jensen Smith    jensen.smith@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • Jun
    26

    IDEAL Workshop: Emerging Markets: Data, Models, Tokens

    Department of Computer Science (CS)

    9:45 AM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILSmore info

    TIME Friday, June 26, 2026 at 9:45 AM - 3:30 PM

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

    ADD TO CALENDAR

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

    CALENDAR Department of Computer Science (CS)

  • Jul
    1

    Blaine Rothrock CS PhD Final Defense: Bridging Prototype to Field: Patterns for Low-Power Wireless Sensing Across Mobile Health and Environmental Conservation

    Department of Computer Science (CS)

    1:00 PM Mudd Library, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    TIME Wednesday, July 1, 2026 at 1:00 PM - 3:00 PM

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

    ADD TO CALENDAR

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

    CALENDAR Department of Computer Science (CS)

  • Sep
    24

    Bagel Thursday + Discussion

    Department of Computer Science (CS)

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

    EVENT DETAILS

    TIME Thursday, September 24, 2026 at 9:00 AM - 11:00 AM

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

    ADD TO CALENDAR

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

    CALENDAR Department of Computer Science (CS)

  • Sep
    28

    CS Seminar

    Department of Computer Science (CS)

    12:00 PM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    TIME Monday, September 28, 2026 at 12:00 PM - 1:00 PM

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

    ADD TO CALENDAR

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

    CALENDAR Department of Computer Science (CS)

  • Oct
    5

    CS Seminar: Formal Relational Equivalence for SQL, GenAI, and Beyond (Brian Suchy)

    Department of Computer Science (CS)

    12:00 PM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    TIME Monday, October 5, 2026 at 12:00 PM - 1:00 PM

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

    ADD TO CALENDAR

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

    CALENDAR Department of Computer Science (CS)

  • Oct
    29

    Bagel Thursday + Discussion

    Department of Computer Science (CS)

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

    EVENT DETAILS

    TIME Thursday, October 29, 2026 at 9:00 AM - 11:00 AM

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

    ADD TO CALENDAR

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

    CALENDAR Department of Computer Science (CS)

  • Nov
    19

    Bagel Thursday + Discussion

    Department of Computer Science (CS)

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

    EVENT DETAILS

    TIME Thursday, November 19, 2026 at 9:00 AM - 11:00 AM

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

    ADD TO CALENDAR

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

    CALENDAR Department of Computer Science (CS)