Search Results for author: Baihua Zheng

Found 12 papers, 4 papers with code

RNTrajRec: Road Network Enhanced Trajectory Recovery with Spatial-Temporal Transformer

1 code implementation23 Nov 2022 Yuqi Chen, Hanyuan Zhang, Weiwei Sun, Baihua Zheng

However, many real-life trajectories are collected with low sample rate due to energy concern or other constraints. We study the task of trajectory recovery in this paper as a means for increasing the sample rate of low sample trajectories.

Graph Generation Traffic Prediction +1

Adaptive Structural Similarity Preserving for Unsupervised Cross Modal Hashing

no code implementations9 Jul 2022 Liang Li, Baihua Zheng, Weiwei Sun

We introduce structural semantic metrics based on graph adjacency relations during the semantic reconstruction and correlation mining stage and meanwhile align the structure semantics in the hash space with an asymmetric binary optimization process.

Management Representation Learning

Multi-Agent Reinforcement Learning for Traffic Signal Control through Universal Communication Method

1 code implementation26 Apr 2022 Qize Jiang, Minhao Qin, Shengmin Shi, Weiwei Sun, Baihua Zheng

How to coordinate the communication among intersections effectively in real complex traffic scenarios with multi-intersection is challenging.

Multi-agent Reinforcement Learning reinforcement-learning +1

Self-Guided Learning to Denoise for Robust Recommendation

2 code implementations14 Apr 2022 Yunjun Gao, Yuntao Du, Yujia Hu, Lu Chen, Xinjun Zhu, Ziquan Fang, Baihua Zheng

Besides, our method can automatically switch its learning phase at the memorization point from memorization to self-guided learning, and select clean and informative memorized data via a novel adaptive denoising scheduler to improve the robustness.

Denoising Memorization +2

HAKG: Hierarchy-Aware Knowledge Gated Network for Recommendation

1 code implementation11 Apr 2022 Yuntao Du, Xinjun Zhu, Lu Chen, Baihua Zheng, Yunjun Gao

Furthermore, we propose a dual item embeddings design to represent and propagate collaborative signals and knowledge associations separately, and leverage the gated aggregation to distill discriminative information for better capturing user behavior patterns.

Knowledge-Aware Recommendation

Crowding Prediction of In-Situ Metro Passengers Using Smart Card Data

no code implementations7 Sep 2020 Xiancai Tian, Chen Zhang, Baihua Zheng

The metro system is playing an increasingly important role in the urban public transit network, transferring a massive human flow across space everyday in the city.

Management

Probabilistic Value Selection for Space Efficient Model

no code implementations9 Jul 2020 Gunarto Sindoro Njoo, Baihua Zheng, Kuo-Wei Hsu, Wen-Chih Peng

Unlike the existing methods such as feature selection that removes features and instance selection that eliminates instances, value selection eliminates the values (with respect to each feature) in the dataset with two purposes: reducing the model size and preserving its accuracy.

feature selection

TRIPDECODER: Study Travel Time Attributes and Route Preferences of Metro Systems from Smart Card Data

no code implementations1 May 2020 Xiancai Tian, Baihua Zheng, Yazhe Wang, Hsiao-Ting Huang, Chih-Chieh Hung

It strategically decouples these two inferencetasks by only taking those trip records with only one practical route as the input for the first inference taskof travel time and feeding the inferred travel time to the second inference task as an additional input whichnot only improves the accuracy but also effectively reduces the complexity of both inference tasks.

DeepDualMapper: A Gated Fusion Network for Automatic Map Extraction using Aerial Images and Trajectories

no code implementations17 Feb 2020 Hao Wu, Hanyuan Zhang, Xin-Yu Zhang, Weiwei Sun, Baihua Zheng, Yuning Jiang

We propose a deep convolutional neural network called DeepDualMapper which fuses the aerial image and trajectory data in a more seamless manner to extract the digital map.

Ineffectiveness of Dictionary Coding to Infer Predictability Limits of Human Mobility

no code implementations8 Oct 2018 Yunheng Han, Weiwei Sun, Baihua Zheng

Consequently, it is ineffective to infer predictability through dictionary coding algorithms.

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