Search Results for author: Yifeng Fan

Found 8 papers, 2 papers with code

A Spectral Method for Joint Community Detection and Orthogonal Group Synchronization

no code implementations25 Dec 2021 Yifeng Fan, Yuehaw Khoo, Zhizhen Zhao

Community detection and orthogonal group synchronization are both fundamental problems with a variety of important applications in science and engineering.

Community Detection

End-to-end Alexa Device Arbitration

no code implementations8 Dec 2021 Jarred Barber, Yifeng Fan, Tao Zhang

We introduce a variant of the speaker localization problem, which we call device arbitration.

Joint Community Detection and Rotational Synchronization via Semidefinite Programming

no code implementations13 May 2021 Yifeng Fan, Yuehaw Khoo, Zhizhen Zhao

In the presence of heterogeneous data, where randomly rotated objects fall into multiple underlying categories, it is challenging to simultaneously classify them into clusters and synchronize them based on pairwise relations.

Community Detection Stochastic Block Model

Unsupervised Co-Learning on G-Manifolds Across Irreducible Representations

1 code implementation NeurIPS 2019 Yifeng Fan, Tingran Gao, Zhizhen Jane Zhao

We introduce a novel co-learning paradigm for manifolds naturally admitting an action of a transformation group $\mathcal{G}$, motivated by recent developments on learning a manifold from attached fibre bundle structures.

Community Detection

Multi-Frequency Vector Diffusion Maps

no code implementations6 Jun 2019 Yifeng Fan, Zhizhen Zhao

We introduce multi-frequency vector diffusion maps (MFVDM), a new framework for organizing and analyzing high dimensional datasets.

Dimensionality Reduction

Unsupervised Co-Learning on $\mathcal{G}$-Manifolds Across Irreducible Representations

1 code implementation6 Jun 2019 Yifeng Fan, Tingran Gao, Zhizhen Zhao

We introduce a novel co-learning paradigm for manifolds naturally equipped with a group action, motivated by recent developments on learning a manifold from attached fibre bundle structures.

Community Detection

Representation Theoretic Patterns in Multi-Frequency Class Averaging for Three-Dimensional Cryo-Electron Microscopy

no code implementations31 May 2019 Yifeng Fan, Tingran Gao, Zhizhen Zhao

We develop in this paper a novel intrinsic classification algorithm -- multi-frequency class averaging (MFCA) -- for classifying noisy projection images obtained from three-dimensional cryo-electron microscopy (cryo-EM) by the similarity among their viewing directions.

Cryo-Electron Microscopy Image Analysis Using Multi-Frequency Vector Diffusion Maps

no code implementations16 Apr 2019 Yifeng Fan, Zhizhen Zhao

Cryo-electron microscopy (EM) single particle reconstruction is an entirely general technique for 3D structure determination of macromolecular complexes.

Cryogenic Electron Microscopy (cryo-EM) Denoising +2

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