Part 1: “AI and Unstructured Data for Measurement and Estimation” with Professor Stephen Hansen

Part 1: “AI and Unstructured Data for Measurement and Estimation” with Professor Stephen Hansen
Monday, November 10, 2025 
(Three-part Mini Course Series, sponsored by the Program for Economic Research)

PER Mini Course Instructor: Professor Stephen Hansen

Professor of Economics, University College London

Stephen Hansen, Professor of Economics at University College London, will be visiting Columbia to host a three-part mini-course series on “AI and Unstructured Data for Measurement and Estimation.” Please see below for detailed information and registration instructions.

Mini Course Series, Part 1

Date: Monday, November 10, 2025
Time: 10:00 am – 11:30 am
Location: 1027 International Affairs Building (IAB)

Abstract: This lecture briefly reviews traditional methods for text-as-data analysis in economics based on word counts. We then introduce word embeddings, which represent words as low-dimensional vectors that capture semantic relationships. Next, we discuss how modern Large Language Models combine word embeddings to generate word predictions. Throughout, we discuss economic applications of the methods.

Please note that registration is required to attend this event.
To register for this mini course, please fill out this form.