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Zhou Fan

4 accepted papers

2026

A$^2$Search: Ambiguity-Aware Question Answering with Reinforcement Learning

ICLR 2026poster

Recent advances in Large Language Models (LLMs) and Reinforcement Learning (RL) have led to strong performance in open-domain question answering (QA). However, existing models still struggle with questions that admit multiple valid answers. Standard QA benchmarks, which typically assume a single gol…

Cited by 0SourcecodeScholar
2020

Spectra of the Conjugate Kernel and Neural Tangent Kernel for linear-width neural networks

NeurIPS 2020oral

We study the eigenvalue distributions of the Conjugate Kernel and Neural Tangent Kernel associated to multi-layer feedforward neural networks. In an asymptotic regime where network width is increasing linearly in sample size, under random initialization of the weights, and for input samples satisfyi…

Cited by 118SourcePDFScholar
2020

Spectral Graph Matching and Regularized Quadratic Relaxations: Algorithm and Theory

ICML 2020poster

Graph matching, also known as network alignment, aims at recovering the latent vertex correspondence between two unlabeled, edge-correlated weighted graphs. To tackle this task, we propose a spectral method, GRAph Matching by Pairwise eigen-Alignments (GRAMPA), which first constructs a similarity ma…

Cited by 55SourcePDFScholar
2019

Surfing: Iterative Optimization Over Incrementally Trained Deep Networks

NeurIPS 2019spotlight

We investigate a sequential optimization procedure to minimize the empirical risk functional $f_{\hat\theta}(x) = \frac{1}{2}\|G_{\hat\theta}(x) - y\|^2$ for certain families of deep networks $G_{\theta}(x)$. The approach is to optimize a sequence of objective functions that use network parameters o…