Search Results for author: Tianyu Xie

Found 5 papers, 2 papers with code

Kernel Semi-Implicit Variational Inference

no code implementations29 May 2024 Ziheng Cheng, Longlin Yu, Tianyu Xie, Shiyue Zhang, Cheng Zhang

This way, the upper-level objective becomes the kernel Stein discrepancy (KSD), which is readily computable for stochastic gradient descent due to the hierarchical structure of semi-implicit variational distributions.

Reflected Flow Matching

no code implementations26 May 2024 Tianyu Xie, Yu Zhu, Longlin Yu, Tong Yang, Ziheng Cheng, Shiyue Zhang, Xiangyu Zhang, Cheng Zhang

We propose reflected flow matching (RFM) to train the velocity model in reflected CNFs by matching the conditional velocity fields in a simulation-free manner, similar to the vanilla FM.

Hierarchical Semi-Implicit Variational Inference with Application to Diffusion Model Acceleration

1 code implementation NeurIPS 2023 Longlin Yu, Tianyu Xie, Yu Zhu, Tong Yang, Xiangyu Zhang, Cheng Zhang

Semi-implicit variational inference (SIVI) has been introduced to expand the analytical variational families by defining expressive semi-implicit distributions in a hierarchical manner.

Bayesian Inference Variational Inference

ARTree: A Deep Autoregressive Model for Phylogenetic Inference

1 code implementation NeurIPS 2023 Tianyu Xie, Cheng Zhang

Designing flexible probabilistic models over tree topologies is important for developing efficient phylogenetic inference methods.

Density Estimation

Beating the Standard Quantum Limit under Ambient Conditions with Solid-State Spins

no code implementations28 Jan 2021 Tianyu Xie, Zhiyuan Zhao, Xi Kong, Wenchao Ma, Mengqi Wang, Xiangyu Ye, Pei Yu, Zhiping Yang, Shaoyi Xu, Pengfei Wang, Ya Wang, Fazhan Shi, Jiangfeng Du

However, it has not been realized in solid-state spin systems at ambient conditions, owing to its intrinsic complexity for the preparation and survival of pure and entangled quantum states.

Quantum Physics

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