Overview
Watch a 50-minute conference talk from the Harvard CMSA Big Data Conference where Princeton's Jianqing Fan presents a groundbreaking approach to uncertainty quantification in predictions called UTOPIA (Universally Trainable Optimal Prediction Intervals Aggregation). Learn about this novel technique that aggregates multiple prediction intervals to minimize prediction band width while maintaining coverage guarantees, applicable across biomedical science, economics, and weather forecasting. Explore how UTOPIA addresses challenges of model misspecification and sub-optimal constructions through linear and convex programming, supported by theoretical guarantees on coverage probability and optimal average length. Follow along as Fan demonstrates the method's effectiveness using synthetic data and real datasets from finance and macroeconomics, covering key concepts like conformal inference, population-level analysis, radar complexity, and VC class considerations.
Syllabus
Introduction
Outline
Prediction Interval
What is a good prediction interval
Conformal Inference
Problem Setup
Population Level
Population Version
Key Steps
Remarks
Numerical Example
Construction
Twostep
Radar Complexity
VC Class
Key Assumption
Examples
Linear Quantile
Results
Summary
Discussion
Taught by
Harvard CMSA