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Ruibo Tu

7 accepted papers

2025

Causal Discovery from Conditionally Stationary Time Series

ICML 2025poster

Causal discovery, i.e., inferring underlying causal relationships from observational data, is highly challenging for AI systems. In a time series modeling context, traditional causal discovery methods mainly consider constrained scenarios with fully observed variables and/or data from stationary tim…

Cited by 5SourcePDFScholar
2024

Matcha-TTS: A Fast TTS Architecture with Conditional Flow Matching

ICASSP 2024accepted

We introduce Matcha-TTS, a new encoder-decoder architecture for speedy TTS acoustic modelling, trained using optimal-transport conditional flow matching (OT-CFM). This yields an ODE-based decoder capable of high output quality in fewer synthesis steps than models trained using score matching. Carefu…

Cited by 252SourceScholar
2024

Unified Speech and Gesture Synthesis Using Flow Matching

ICASSP 2024accepted

As text-to-speech technologies achieve remarkable naturalness in read-aloud tasks, there is growing interest in multimodal synthesis of verbal and non-verbal communicative behaviour, such as spontaneous speech and associated body gestures. This paper presents a novel, unified architecture for jointl…

Cited by 7SourceScholar
2020

How do fair decisions fare in long-term qualification?

NeurIPS 2020poster

Although many fairness criteria have been proposed for decision making, their long-term impact on the well-being of a population remains unclear. In this work, we study the dynamics of population qualification and algorithmic decisions under a partially observed Markov decision problem setting. By c…

2019

Causal Discovery in the Presence of Missing Data

AISTATS 2019poster

Missing data are ubiquitous in many domains such as healthcare. When these data entries are not missing completely at random, the (conditional) independence relations in the observed data may be different from those in the complete data generated by the underlying causal process. Consequently, simpl…

2019

Neuropathic Pain Diagnosis Simulator for Causal Discovery Algorithm Evaluation

NeurIPS 2019poster

Discovery of causal relations from observational data is essential for many disciplines of science and real-world applications. However, unlike other machine learning algorithms, whose development has been greatly fostered by a large amount of available benchmark datasets, causal discovery algorithm…