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Yuxin Chang

5 accepted papers

2026

Beyond Accuracy: Are Time Series Foundation Models Well-Calibrated?

ICLR 2026poster

The recent development of foundation models for time series data has generated considerable interest in using such models across a variety of applications. Although foundation models achieve state-of-the-art predictive performance, their calibration properties remain relatively underexplored, despi…

Cited by 0SourcecodeScholar
2025

Deep Continuous-Time State-Space Models for Marked Event Sequences

NeurIPS 2025spotlight

Marked temporal point processes (MTPPs) model sequences of events occurring at irregular time intervals, with wide-ranging applications in fields such as healthcare, finance and social networks. We propose the _state-space point process_ (S2P2) model, a novel and performant model that leverages tech…

Cited by 0SourceScholar
2024

Probabilistic Modeling for Sequences of Sets in Continuous-Time

AISTATS 2024poster

Neural marked temporal point processes have been a valuable addition to the existing toolbox of statistical parametric models for continuous-time event data. These models are useful for sequences where each event is associated with a single item (a single type of event or a “mark”)—but such models a…

2023

Probabilistic Querying of Continuous-Time Event Sequences

AISTATS 2023poster

Continuous-time event sequences, i.e., sequences consisting of continuous time stamps and associated event types (“marks”), are an important type of sequential data with many applications, e.g., in clinical medicine or user behavior modeling. Since these data are typically modeled in an autoregressi…

Cited by 4SourcePDFScholar