Search Results for author: Changqing Xu

Found 10 papers, 1 papers with code

An End-To-End Stuttering Detection Method Based On Conformer And BILSTM

no code implementations14 Nov 2024 Xiaokang Liu, Changqing Xu, Yudong Yang, Lan Wang, Nan Yan

In the SLT 2024 Stuttering Speech Challenge based on the AS-70 dataset [1], our model improved the mean F1 score by 24. 8% compared to the baseline method and achieved first place.

Event Detection Multi-Task Learning

STCSNN: High energy efficiency spike-train level spiking neural networks with spatio-temporal conversion

no code implementations14 Jul 2023 Changqing Xu, Yi Liu, YinTang Yang

In the STCSNN, spatio-temporal conversion blocks (STCBs) are proposed to keep the low power features of SNNs and improve accuracy.

Ultra-low Latency Adaptive Local Binary Spiking Neural Network with Accuracy Loss Estimator

no code implementations31 Jul 2022 Changqing Xu, Yijian Pei, Zili Wu, Yi Liu, YinTang Yang

Spiking neural network (SNN) is a brain-inspired model which has more spatio-temporal information processing capacity and computational energy efficiency.

Quantization

Ultra-low Latency Spiking Neural Networks with Spatio-Temporal Compression and Synaptic Convolutional Block

no code implementations18 Mar 2022 Changqing Xu, Yi Liu, YinTang Yang

We evaluate the proposed method for event streams classification tasks on neuromorphic N-MNIST, CIFAR10-DVS, DVS128 gesture datasets.

Classification

Self-Supervised Point Cloud Registration with Deep Versatile Descriptors

no code implementations25 Jan 2022 Dongrui Liu, Chuanchuan Chen, Changqing Xu, Robert Qiu, Lei Chu

In this paper, we propose to jointly use both global and local descriptors to register point clouds in a self-supervised manner, which is motivated by a critical observation that all local geometries of point clouds are transformed consistently under the same transformation.

Computational Efficiency Point cloud reconstruction +2

Direct Training via Backpropagation for Ultra-low Latency Spiking Neural Networks with Multi-threshold

no code implementations25 Nov 2021 Changqing Xu, Yi Liu, YinTang Yang

In our proposed training method, we proposed three approximated derivative for spike activity to solve the problem of the non-differentiable issue which cause difficulties for direct training SNNs based on BP.

Machine Learning Regression based Single Event Transient Modeling Method for Circuit-Level Simulation

no code implementations22 May 2021 Changqing Xu, Yi Liu, XinFang Liao, JiaLiang Cheng, YinTang Yang

A multilayer feedfordward neural network is used to build the SET pulse current model by learning the data from TCAD simulation.

BIG-bench Machine Learning regression

Multi-dimensional wave steering with higher-order topological phononic crystal

no code implementations17 Feb 2021 Changqing Xu, Zeguo Chen, Guanqing Zhang, Guancong Ma, Ying Wu

The recent discovery and realizations of higher-order topological insulators enrich the fundamental studies on topological phases.

Applied Physics

Boosting Throughput and Efficiency of Hardware Spiking Neural Accelerators using Time Compression Supporting Multiple Spike Codes

no code implementations10 Sep 2019 Changqing Xu, Wenrui Zhang, Yu Liu, Peng Li

Using spiking speech and image recognition datasets, we demonstrate the feasibility of supporting large time compression ratios of up to 16x, delivering up to 15. 93x, 13. 88x, and 86. 21x improvements in throughput, energy dissipation, the tradeoffs between hardware area, runtime, energy, and classification accuracy, respectively based on different spike codes on a Xilinx Zynq-7000 FPGA.

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