Search Results for author: Xia Liu

Found 4 papers, 0 papers with code

Mitigating barren plateaus of variational quantum eigensolvers

no code implementations26 May 2022 Xia Liu, Geng Liu, Jiaxin Huang, Hao-Kai Zhang, Xin Wang

Variational quantum algorithms (VQAs) are expected to establish valuable applications on near-term quantum computers.

Approximation smooth and sparse functions by deep neural networks without saturation

no code implementations13 Jan 2020 Xia Liu

In particular, we prove that the constructed deep nets can reach the optimal approximation rate in approximating both smooth and sparse functions with controllable magnitude of free parameters.

Greedy Criterion in Orthogonal Greedy Learning

no code implementations20 Apr 2016 Lin Xu, Shao-Bo Lin, Jinshan Zeng, Xia Liu, Zongben Xu

In this paper, we find that SGD is not the unique greedy criterion and introduce a new greedy criterion, called "$\delta$-greedy threshold" for learning.

Is Extreme Learning Machine Feasible? A Theoretical Assessment (Part II)

no code implementations24 Jan 2014 Shaobo Lin, Xia Liu, Jian Fang, Zongben Xu

On one hand, we find that the randomness causes an additional uncertainty problem of ELM, both in approximation and learning.

Cannot find the paper you are looking for? You can Submit a new open access paper.