Search Results for author: Zhiyu Liang

Found 10 papers, 3 papers with code

Unsupervised Multi-modal Feature Alignment for Time Series Representation Learning

no code implementations9 Dec 2023 Chen Liang, Donghua Yang, Zhiyu Liang, Hongzhi Wang, Zheng Liang, Xiyang Zhang, Jianfeng Huang

In contrast to conventional methods that fuse features from multiple modalities, our proposed approach simplifies the neural architecture by retaining a single time series encoder, consequently leading to preserved scalability.

Feature Engineering Inductive Bias +2

Contrastive Shapelet Learning for Unsupervised Multivariate Time Series Representation Learning

1 code implementation30 May 2023 Zhiyu Liang, Jianfeng Zhang, Chen Liang, Hongzhi Wang, Zheng Liang, Lujia Pan

Recent studies have shown great promise in unsupervised representation learning (URL) for multivariate time series, because URL has the capability in learning generalizable representation for many downstream tasks without using inaccessible labels.

Anomaly Detection Data Augmentation +2

TodyNet: Temporal Dynamic Graph Neural Network for Multivariate Time Series Classification

1 code implementation11 Apr 2023 Huaiyuan Liu, Xianzhang Liu, Donghua Yang, Zhiyu Liang, Hongzhi Wang, Yong Cui, Jun Gu

Unfortunately, the existing deep learning-based methods neglect the hidden dependencies in different dimensions and also rarely consider the unique dynamic features of time series, which lack sufficient feature extraction capability to obtain satisfactory classification accuracy.

Classification Graph Learning +2

The Geometry of Nonlinear Embeddings in Kernel Discriminant Analysis

no code implementations12 May 2020 Jiae Kim, Yoonkyung Lee, Zhiyu Liang

We study the geometry of nonlinear embeddings in discriminant analysis with polynomial kernels and Gaussian kernel by identifying the population-level discriminant function that depends on the data distribution and the kernel.

Low Power Inference for On-Device Visual Recognition with a Quantization-Friendly Solution

no code implementations12 Mar 2019 Chen Feng, Tao Sheng, Zhiyu Liang, Shaojie Zhuo, Xiaopeng Zhang, Liang Shen, Matthew Ardi, Alexander C. Berg, Yiran Chen, Bo Chen, Kent Gauen, Yung-Hsiang Lu

The IEEE Low-Power Image Recognition Challenge (LPIRC) is an annual competition started in 2015 that encourages joint hardware and software solutions for computer vision systems with low latency and power.

Quantization

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