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Stephan Xie

2 accepted papers

2025

High-Dimensional Prediction for Sequential Decision Making

ICML 2025oral

We give an efficient algorithm for producing multi-dimensional forecasts in an online adversarial environment that have low bias subject to any polynomial number of conditioning events, that can depend both on external context and on our predictions themselves. We demonstrate the use of this algorit…

Cited by 26SourcePDFScholar
2025

This Time is Different: An Observability Perspective on Time Series Foundation Models

NeurIPS 2025poster

We introduce Toto, a time series forecasting foundation model with 151 million parameters. Toto uses a modern decoder-only architecture coupled with architectural innovations designed to account for specific challenges found in multivariate observability time series data. Toto's pre-training corpus…

Cited by 0SourcecodeScholar