Search Results for author: Jiawei Jiang

Found 31 papers, 16 papers with code

Don't Waste Your Bits! Squeeze Activations and Gradients for Deep Neural Networks via TinyScript

no code implementations ICML 2020 Fangcheng Fu, Yuzheng Hu, Yihan He, Jiawei Jiang, Yingxia Shao, Ce Zhang, Bin Cui

Recent years have witnessed intensive research interests on training deep neural networks (DNNs) more efficiently by quantization-based compression methods, which facilitate DNNs training in two ways: (1) activations are quantized to shrink the memory consumption, and (2) gradients are quantized to decrease the communication cost.

Quantization

Analysis of Distributed Optimization Algorithms on a Real Processing-In-Memory System

no code implementations10 Apr 2024 Steve Rhyner, Haocong Luo, Juan Gómez-Luna, Mohammad Sadrosadati, Jiawei Jiang, Ataberk Olgun, Harshita Gupta, Ce Zhang, Onur Mutlu

Processor-centric architectures (e. g., CPU, GPU) commonly used for modern ML training workloads are limited by the data movement bottleneck, i. e., due to repeatedly accessing the training dataset.

Distributed Optimization

Class Similarity Transition: Decoupling Class Similarities and Imbalance from Generalized Few-shot Segmentation

1 code implementation8 Apr 2024 Shihong Wang, Ruixun Liu, Kaiyu Li, Jiawei Jiang, Xiangyong Cao

This paper focuses on the relevance between base and novel classes, and improves GFSS in two aspects: 1) mining the similarity between base and novel classes to promote the learning of novel classes, and 2) mitigating the class imbalance issue caused by the volume difference between the support set and the training set.

Jointly Learning Representations for Map Entities via Heterogeneous Graph Contrastive Learning

no code implementations9 Feb 2024 Jiawei Jiang, Yifan Yang, Jingyuan Wang, Junjie Wu

Developing effective Map Entity Representation Learning (MERL) methods is crucial to extracting embedding information from electronic maps and converting map entities into representation vectors for downstream applications.

Contrastive Learning Representation Learning

A Beam-Segmenting Polar Format Algorithm Based on Double PCS for Video SAR Persistent Imaging

no code implementations19 Dec 2023 Jiawei Jiang, Yinwei Li, Shaowen Luo, Ping Li, Yiming Zhu

Through processing the sub-beam data and mosaicking the refocused subimages, the full image in GOCS without distortion and defocus is obtained.

Generative and Contrastive Paradigms Are Complementary for Graph Self-Supervised Learning

no code implementations24 Oct 2023 Yuxiang Wang, Xiao Yan, Chuang Hu, Fangcheng Fu, Wentao Zhang, Hao Wang, Shuo Shang, Jiawei Jiang

For graph self-supervised learning (GSSL), masked autoencoder (MAE) follows the generative paradigm and learns to reconstruct masked graph edges or node features.

Contrastive Learning Graph Classification +4

BenchTemp: A General Benchmark for Evaluating Temporal Graph Neural Networks

1 code implementation31 Aug 2023 Qiang Huang, Jiawei Jiang, Xi Susie Rao, Ce Zhang, Zhichao Han, Zitao Zhang, Xin Wang, Yongjun He, Quanqing Xu, Yang Zhao, Chuang Hu, Shuo Shang, Bo Du

To handle graphs in which features or connectivities are evolving over time, a series of temporal graph neural networks (TGNNs) have been proposed.

Link Prediction Node Classification

Unified Data Management and Comprehensive Performance Evaluation for Urban Spatial-Temporal Prediction [Experiment, Analysis & Benchmark]

1 code implementation24 Aug 2023 Jiawei Jiang, Chengkai Han, Wayne Xin Zhao, Jingyuan Wang

The field of urban spatial-temporal prediction is advancing rapidly with the development of deep learning techniques and the availability of large-scale datasets.

Management

LibCity: A Unified Library Towards Efficient and Comprehensive Urban Spatial-Temporal Prediction

2 code implementations27 Apr 2023 Jiawei Jiang, Chengkai Han, Wenjun Jiang, Wayne Xin Zhao, Jingyuan Wang

As deep learning technology advances and more urban spatial-temporal data accumulates, an increasing number of deep learning models are being proposed to solve urban spatial-temporal prediction problems.

Two-stage MR Image Segmentation Method for Brain Tumors based on Attention Mechanism

no code implementations17 Apr 2023 Li Zhu, Jiawei Jiang, Lin Lu, Jin Li

In response to this problem, we introduce the Coordinate Attention (CA) module to replace the Res Block to reduce the number of parameters, and cooperate with the spatial information extraction network above to strengthen the information extraction ability.

Brain Tumor Segmentation Generative Adversarial Network +3

GA-HQS: MRI reconstruction via a generically accelerated unfolding approach

no code implementations6 Apr 2023 Jiawei Jiang, Yuchao Feng, Honghui Xu, Wanjun Chen, Jianwei Zheng

Deep unfolding networks (DUNs) are the foremost methods in the realm of compressed sensing MRI, as they can employ learnable networks to facilitate interpretable forward-inference operators.

MRI Reconstruction

BUAA_BIGSCity: Spatial-Temporal Graph Neural Network for Wind Power Forecasting in Baidu KDD CUP 2022

1 code implementation22 Feb 2023 Jiawei Jiang, Chengkai Han, Jingyuan Wang

Therefore, organizers provide a wind power dataset containing historical data from 134 wind turbines and launch the Baidu KDD Cup 2022 to examine the limitations of current methods for wind power forecasting.

PDFormer: Propagation Delay-Aware Dynamic Long-Range Transformer for Traffic Flow Prediction

1 code implementation19 Jan 2023 Jiawei Jiang, Chengkai Han, Wayne Xin Zhao, Jingyuan Wang

However, GNN-based models have three major limitations for traffic prediction: i) Most methods model spatial dependencies in a static manner, which limits the ability to learn dynamic urban traffic patterns; ii) Most methods only consider short-range spatial information and are unable to capture long-range spatial dependencies; iii) These methods ignore the fact that the propagation of traffic conditions between locations has a time delay in traffic systems.

Computational Efficiency Time Series Prediction +1

Continuous Trajectory Generation Based on Two-Stage GAN

no code implementations16 Jan 2023 Wenjun Jiang, Wayne Xin Zhao, Jingyuan Wang, Jiawei Jiang

Simulating the human mobility and generating large-scale trajectories are of great use in many real-world applications, such as urban planning, epidemic spreading analysis, and geographic privacy protect.

Vocal Bursts Valence Prediction

Self-supervised Trajectory Representation Learning with Temporal Regularities and Travel Semantics

1 code implementation17 Nov 2022 Jiawei Jiang, Dayan Pan, Houxing Ren, Xiaohan Jiang, Chao Li, Jingyuan Wang

TRL aims to convert complicated raw trajectories into low-dimensional representation vectors, which can be applied to various downstream tasks, such as trajectory classification, clustering, and similarity computation.

Contrastive Learning Graph Attention +2

A THz Video SAR Imaging Algorithm Based on Chirp Scaling

no code implementations19 Sep 2022 Jiawei Jiang, Yinwei Li, Qibin Zheng

In video synthetic aperture radar (SAR) imaging mode, the polar format algorithm (PFA) is more computational effective than the backprojection algorithm (BPA).

STDEN: Towards Physics-Guided Neural Networks for Traffic Flow Prediction

1 code implementation1 Sep 2022 Jiahao Ji, Jingyuan Wang, Zhe Jiang, Jiawei Jiang, Hu Zhang

High-performance traffic flow prediction model designing, a core technology of Intelligent Transportation System, is a long-standing but still challenging task for industrial and academic communities.

Physics-informed machine learning Spatio-Temporal Forecasting +1

Towards Communication-efficient Vertical Federated Learning Training via Cache-enabled Local Updates

no code implementations29 Jul 2022 Fangcheng Fu, Xupeng Miao, Jiawei Jiang, Huanran Xue, Bin Cui

Vertical federated learning (VFL) is an emerging paradigm that allows different parties (e. g., organizations or enterprises) to collaboratively build machine learning models with privacy protection.

Vertical Federated Learning

Stochastic Gradient Descent without Full Data Shuffle

1 code implementation12 Jun 2022 Lijie Xu, Shuang Qiu, Binhang Yuan, Jiawei Jiang, Cedric Renggli, Shaoduo Gan, Kaan Kara, Guoliang Li, Ji Liu, Wentao Wu, Jieping Ye, Ce Zhang

In this paper, we first conduct a systematic empirical study on existing data shuffling strategies, which reveals that all existing strategies have room for improvement -- they all suffer in terms of I/O performance or convergence rate.

Computational Efficiency

BRIGHT -- Graph Neural Networks in Real-Time Fraud Detection

no code implementations25 May 2022 Mingxuan Lu, Zhichao Han, Susie Xi Rao, Zitao Zhang, Yang Zhao, Yinan Shan, Ramesh Raghunathan, Ce Zhang, Jiawei Jiang

Apart from rule-based and machine learning filters that are already deployed in production, we want to enable efficient real-time inference with graph neural networks (GNNs), which is useful to catch multihop risk propagation in a transaction graph.

Entity Embeddings Fraud Detection

LibCity: An Open Library for Traffic Prediction

1 code implementation International Conference on Advances in Geographic Information Systems 2021 Jingyuan Wang, Jiawei Jiang, Wenjun Jiang, Chao Li, Wayne Xin Zhao

This paper presents LibCity, a unified, comprehensive, and extensible library for traffic prediction, which provides researchers with a credible experimental tool and a convenient development framework.

Multivariate Time Series Forecasting Spatio-Temporal Forecasting +2

VolcanoML: Speeding up End-to-End AutoML via Scalable Search Space Decomposition

3 code implementations19 Jul 2021 Yang Li, Yu Shen, Wentao Zhang, Jiawei Jiang, Bolin Ding, Yaliang Li, Jingren Zhou, Zhi Yang, Wentao Wu, Ce Zhang, Bin Cui

End-to-end AutoML has attracted intensive interests from both academia and industry, which automatically searches for ML pipelines in a space induced by feature engineering, algorithm/model selection, and hyper-parameter tuning.

AutoML Feature Engineering +1

OpenBox: A Generalized Black-box Optimization Service

6 code implementations1 Jun 2021 Yang Li, Yu Shen, Wentao Zhang, Yuanwei Chen, Huaijun Jiang, Mingchao Liu, Jiawei Jiang, Jinyang Gao, Wentao Wu, Zhi Yang, Ce Zhang, Bin Cui

Black-box optimization (BBO) has a broad range of applications, including automatic machine learning, engineering, physics, and experimental design.

Experimental Design Transfer Learning

Towards Demystifying Serverless Machine Learning Training

1 code implementation17 May 2021 Jiawei Jiang, Shaoduo Gan, Yue Liu, Fanlin Wang, Gustavo Alonso, Ana Klimovic, Ankit Singla, Wentao Wu, Ce Zhang

The appeal of serverless (FaaS) has triggered a growing interest on how to use it in data-intensive applications such as ETL, query processing, or machine learning (ML).

BIG-bench Machine Learning

Efficient Automatic CASH via Rising Bandits

no code implementations8 Dec 2020 Yang Li, Jiawei Jiang, Jinyang Gao, Yingxia Shao, Ce Zhang, Bin Cui

In this framework, the BO methods are used to solve the HPO problem for each ML algorithm separately, incorporating a much smaller hyperparameter space for BO methods.

Bayesian Optimization BIG-bench Machine Learning +2

MFES-HB: Efficient Hyperband with Multi-Fidelity Quality Measurements

5 code implementations5 Dec 2020 Yang Li, Yu Shen, Jiawei Jiang, Jinyang Gao, Ce Zhang, Bin Cui

Instead of sampling configurations randomly in HB, BOHB samples configurations based on a BO surrogate model, which is constructed with the high-fidelity measurements only.

Bayesian Optimization Hyperparameter Optimization

An Experimental Evaluation of Large Scale GBDT Systems

no code implementations3 Jul 2019 Fangcheng Fu, Jiawei Jiang, Yingxia Shao, Bin Cui

Gradient boosting decision tree (GBDT) is a widely-used machine learning algorithm in both data analytic competitions and real-world industrial applications.

Management

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