Search Results for author: Zhenyu Wang

Found 24 papers, 5 papers with code

Efficient Dialogue Complementary Policy Learning via Deep Q-network Policy and Episodic Memory Policy

no code implementations EMNLP 2021 Yangyang Zhao, Zhenyu Wang, Changxi Zhu, Shihan Wang

Most of the existing dialogue policy methods rely on a single learning system, while the human brain has two specialized learning and memory systems, supporting to find good solutions without requiring copious examples.

Audio Anti-spoofing Using a Simple Attention Module and Joint Optimization Based on Additive Angular Margin Loss and Meta-learning

no code implementations17 Nov 2022 Zhenyu Wang, John H. L. Hansen

Automatic speaker verification systems are vulnerable to a variety of access threats, prompting research into the formulation of effective spoofing detection systems to act as a gate to filter out such spoofing attacks.

Meta-Learning Speaker Verification +2

Multi-source Domain Adaptation for Text-independent Forensic Speaker Recognition

no code implementations17 Nov 2022 Zhenyu Wang, John H. L. Hansen

A comprehensive set of experiments are conducted to demonstrate that: 1) diverse acoustic environments do impact speaker recognition performance, which could advance research in audio forensics, 2) domain adversarial training learns the discriminative features which are also invariant to shifts between domains, 3) discrepancy-minimizing adaptation achieves effective performance simultaneously across multiple acoustic domains, and 4) moment-matching adaptation along with dynamic distribution alignment also significantly promotes speaker recognition performance on each domain, especially for the LENA-field domain with noise compared to all other systems.

Domain Adaptation Speaker Recognition

VTC-LFC: Vision Transformer Compression with Low-Frequency Components

1 code implementation NIPS 2022 Zhenyu Wang, Hao Luo, Pichao Wang, Feng Ding, Fan Wang, Hao Li

Although Vision transformers (ViTs) have recently dominated many vision tasks, deploying ViT models on resource-limited devices remains a challenging problem.

Hybrid Physical Metric For 6-DoF Grasp Pose Detection

1 code implementation22 Jun 2022 Yuhao Lu, Beixing Deng, Zhenyu Wang, Peiyuan Zhi, YaLi Li, Shengjin Wang

6-DoF grasp pose detection of multi-grasp and multi-object is a challenge task in the field of intelligent robot.

A collaborative decomposition-based evolutionary algorithm integrating normal and penalty-based boundary intersection for many-objective optimization

no code implementations14 Apr 2022 Yu Wu, Jianle Wei, Weiqin Ying, Yanqi Lan, Zhen Cui, Zhenyu Wang

On the other hand, the parallel reference lines of the parallel decomposition methods including the normal boundary intersection (NBI) might result in poor diversity because of under-sampling near the boundaries for MaOPs with concave frontiers.

Impact of Naturalistic Field Acoustic Environments on Forensic Text-independent Speaker Verification System

no code implementations28 Jan 2022 Zhenyu Wang, John H. L. Hansen

Audio analysis for forensic speaker verification offers unique challenges in system performance due in part to data collected in naturalistic field acoustic environments where location/scenario uncertainty is common in the forensic data collection process.

Text-Independent Speaker Verification

Consensus-Based Decentralized Energy Trading for Distributed Energy Resources

no code implementations28 Oct 2021 Zhenyu Wang, XiaoYu Zhang, Hao Wang

In smart grids, distributed energy resources (DERs) have penetrated residential zones to provide a new form of electricity supply, mainly from renewable energy.

energy trading Management +1

Data-Uncertainty Guided Multi-Phase Learning for Semi-Supervised Object Detection

no code implementations CVPR 2021 Zhenyu Wang, YaLi Li, Ye Guo, Lu Fang, Shengjin Wang

In this paper, we delve into semi-supervised object detection where unlabeled images are leveraged to break through the upper bound of fully-supervised object detection models.

object-detection Object Detection +1

Three-dimensional charge density wave and robust zero-bias conductance peak inside the superconducting vortex core of a kagome superconductor CsV$_3$Sb$_5$

no code implementations8 Mar 2021 Zuowei Liang, Xingyuan Hou, Wanru Ma, Fan Zhang, Ping Wu, Zongyuan Zhang, Fanghang Yu, J. -J. Ying, Kun Jiang, Lei Shan, Zhenyu Wang, X. -H. Chen

The transition-metal-based kagome metals provide a versatile platform for correlated topological phases hosting various electronic instabilities.

Superconductivity Strongly Correlated Electrons

Magnonic frequency comb through nonlinear magnon-skyrmion scattering

no code implementations4 Feb 2021 Zhenyu Wang, H. Y. Yuan, Yunshan Cao, Z. -X. Li, Rembert A. Duine, Peng Yan

An optical frequency comb consists of a set of discrete and equally spaced frequencies and has found wide applications in the synthesis over broad spectral frequencies of electromagnetic wave and precise optical frequency metrology.

Mesoscale and Nanoscale Physics Optics

Automatic Curriculum Learning With Over-repetition Penalty for Dialogue Policy Learning

no code implementations28 Dec 2020 Yangyang Zhao, Zhenyu Wang, Zhenhua Huang

We propose a novel framework, Automatic Curriculum Learning-based Deep Q-Network (ACL-DQN), which replaces the traditional random sampling method with a teacher policy model to realize the dialogue policy for automatic curriculum learning.

Geometric Electrostatic Particle-In-Cell Algorithm on Unstructured Meshes

no code implementations15 Dec 2020 Zhenyu Wang, Hong Qin, Benjamin Sturdevant, Choong-Seock Chang

We compare the energy conservation property of the geometric PIC algorithm derived from the discrete variational principle with that of previous PIC methods on unstructured meshes.

Plasma Physics

Spin-wave focusing induced skyrmion generation

no code implementations17 Sep 2020 Zhenyu Wang, Z. -X. Li, Ruifang Wang, Bo Liu, Hao Meng, Yunshan Cao, Peng Yan

We propose a new method to generate magnetic skyrmions through spin-wave focusing in chiral ferromagnets. A lens is constructed to focus spin waves by a curved interface between two ferromagnetic thin films with different perpendicular magnetic anisotropies.

Mesoscale and Nanoscale Physics

Cross-domain Adaptation with Discrepancy Minimization for Text-independent Forensic Speaker Verification

no code implementations5 Sep 2020 Zhenyu Wang, Wei Xia, John H. L. Hansen

Forensic audio analysis for speaker verification offers unique challenges due to location/scenario uncertainty and diversity mismatch between reference and naturalistic field recordings.

Domain Adaptation Speaker Verification

AIBench: An Industry Standard Internet Service AI Benchmark Suite

no code implementations13 Aug 2019 Wanling Gao, Fei Tang, Lei Wang, Jianfeng Zhan, Chunxin Lan, Chunjie Luo, Yunyou Huang, Chen Zheng, Jiahui Dai, Zheng Cao, Daoyi Zheng, Haoning Tang, Kunlin Zhan, Biao Wang, Defei Kong, Tong Wu, Minghe Yu, Chongkang Tan, Huan Li, Xinhui Tian, Yatao Li, Junchao Shao, Zhenyu Wang, Xiaoyu Wang, Hainan Ye

On the basis of the AIBench framework, abstracting the real-world data sets and workloads from one of the top e-commerce providers, we design and implement the first end-to-end Internet service AI benchmark, which contains the primary modules in the critical paths of an industry scale application and is scalable to deploy on different cluster scales.

Learning-To-Rank

Air Quality Measurement Based on Double-Channel Convolutional Neural Network Ensemble Learning

no code implementations19 Feb 2019 Zhenyu Wang, Wei Zheng, Chunfeng Song

In this paper, we propose a method for air quality measurement based on double-channel convolutional neural network ensemble learning to solve the problem of feature extraction for different parts of environmental images.

Ensemble Learning Self-Learning

Image Captioning based on Deep Reinforcement Learning

no code implementations13 Sep 2018 Haichao Shi, Peng Li, Bo wang, Zhenyu Wang

However, in this paper, we propose a novel architecture for image captioning with deep reinforcement learning to optimize image captioning tasks.

Image Captioning Policy Gradient Methods +2

Pulsed polarisation for robust DNP

1 code implementation4 Oct 2017 Ilai Schwartz, Jochen Scheuer, Benedikt Tratzmiller, Samuel Mueller, Qiong Chen, Ish Dhand, Zhenyu Wang, Christoph Mueller, Boris Naydenov, Fedor Jelezko, Martin B. Plenio

We derive sequences theoretically and demonstrate experimentally that they are capable of efficient polarisation transfer from an optically polarised nitrogen-vacancy centre in diamond to the surrounding $^{13}$C nuclear spin bath even in the presence of control errors, making it an ideal tool for the realisation of the above NV centre based applications.

Quantum Physics

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