Chenglong Ye - Colloquium Speaker

Assistant Professor, Dr. Bing Zhang Department of Statistics, University of Kentucky
Date: 
Thursday, November 2, 2023 - 3:15pm
Colloquium Title: 
Meta Clustering for Collaborative Learning

Abstract:

In collaborative learning, learners coordinate to enhance each of their learning performances. From the perspective of any learner, a critical challenge is to filter out unqualified collaborators. We propose a framework named meta clustering to address the challenge. Unlike the classical problem of clustering data points, meta clustering categorizes learners. Assuming each learner performs a supervised regression on a standalone local dataset, we propose a Select-Exchange-Cluster (SEC) method to classify the learners by their underlying supervised functions. We theoretically show that the SEC can cluster learners into accurate collaboration sets. Empirical studies corroborate the theoretical analysis and demonstrate that SEC can be computationally efficient, robust against learner heterogeneity, and effective in enhancing single-learner performance. Also, we show how the proposed approach may be used to enhance data fairness.

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Topic: Colloquium -- Department of Statistics and Actuarial Science -- University of Iowa
Time: Nov 2, 2023 03:15 PM Central Time (US and Canada)

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