Search Results for author: Zhao Xu

Found 25 papers, 10 papers with code

Towards Urban General Intelligence: A Review and Outlook of Urban Foundation Models

1 code implementation30 Jan 2024 Weijia Zhang, Jindong Han, Zhao Xu, Hang Ni, Hao liu, Hui Xiong

Machine learning techniques are now integral to the advancement of intelligent urban services, playing a crucial role in elevating the efficiency, sustainability, and livability of urban environments.

LLMLight: Large Language Models as Traffic Signal Control Agents

1 code implementation26 Dec 2023 Siqi Lai, Zhao Xu, Weijia Zhang, Hao liu, Hui Xiong

Traffic Signal Control (TSC) is a crucial component in urban traffic management, aiming to optimize road network efficiency and reduce congestion.

Decision Making Management +1

Applying Large Language Models to Power Systems: Potential Security Threats

no code implementations22 Nov 2023 Jiaqi Ruan, Gaoqi Liang, Huan Zhao, Guolong Liu, Xianzhuo Sun, Jing Qiu, Zhao Xu, Fushuan Wen, Zhao Yang Dong

Applying large language models (LLMs) to modern power systems presents a promising avenue for enhancing decision-making and operational efficiency.

Decision Making

Entire Space Cascade Delayed Feedback Modeling for Effective Conversion Rate Prediction

no code implementations9 Aug 2023 Yunfeng Zhao, Xu Yan, Xiaoqiang Gui, Shuguang Han, Xiang-Rong Sheng, Guoxian Yu, Jufeng Chen, Zhao Xu, Bo Zheng

Furthermore, there is delayed feedback in both conversion and refund events and they are sequentially dependent, named cascade delayed feedback (CDF), which significantly harms data freshness for model training.

Recommendation Systems Selection bias

Efficient and Equivariant Graph Networks for Predicting Quantum Hamiltonian

1 code implementation8 Jun 2023 Haiyang Yu, Zhao Xu, Xiaofeng Qian, Xiaoning Qian, Shuiwang Ji

We consider the prediction of the Hamiltonian matrix, which finds use in quantum chemistry and condensed matter physics.

Learning Sparsity of Representations with Discrete Latent Variables

no code implementations3 Apr 2023 Zhao Xu, Daniel Onoro Rubio, Giuseppe Serra, Mathias Niepert

The resulting sparsity of a representation is not fixed, but fits to the observation itself under the pre-defined restriction.

Uncertainty Propagation in Node Classification

no code implementations3 Apr 2023 Zhao Xu, Carolin Lawrence, Ammar Shaker, Raman Siarheyeu

To address these issues, we propose a Bayesian uncertainty propagation (BUP) method, which embeds GNNs in a Bayesian modeling framework, and models predictive uncertainty of node classification with Bayesian confidence of predictive probability and uncertainty of messages.

Classification Node Classification

Multi-objective Generative Design of Three-Dimensional Composite Materials

no code implementations26 Feb 2023 Zhengyang Zhang, Han Fang, Zhao Xu, Jiajie Lv, Yao Shen, Yanming Wang

Composite materials with 3D architectures are desirable in a variety of applications for the capability of tailoring their properties to meet multiple functional requirements.

Generative Adversarial Network

Human-Centric Research for NLP: Towards a Definition and Guiding Questions

no code implementations10 Jul 2022 Bhushan Kotnis, Kiril Gashteovski, Julia Gastinger, Giuseppe Serra, Francesco Alesiani, Timo Sztyler, Ammar Shaker, Na Gong, Carolin Lawrence, Zhao Xu

With Human-Centric Research (HCR) we can steer research activities so that the research outcome is beneficial for human stakeholders, such as end users.

A Human-Centric Assessment Framework for AI

no code implementations25 May 2022 Sascha Saralajew, Ammar Shaker, Zhao Xu, Kiril Gashteovski, Bhushan Kotnis, Wiem Ben Rim, Jürgen Quittek, Carolin Lawrence

Inspired by the Turing test, we introduce a human-centric assessment framework where a leading domain expert accepts or rejects the solutions of an AI system and another domain expert.

Self-Supervised Representation Learning via Latent Graph Prediction

no code implementations16 Feb 2022 Yaochen Xie, Zhao Xu, Shuiwang Ji

Self-supervised learning (SSL) of graph neural networks is emerging as a promising way of leveraging unlabeled data.

Contrastive Learning Representation Learning +1

Evolutionary Optimization for Proactive and Dynamic Computing Resource Allocation in Open Radio Access Network

no code implementations12 Jan 2022 Gan Ruan, Leandro L. Minku, Zhao Xu, Xin Yao

However, the existing problem formulation to solve this resource allocation problem is unsuitable as it defines the capacity utility of resource in an inappropriate way and tends to cause much delay.

Peer-to-Peer Energy Cooperation in Building Community over A Lossy Network

no code implementations18 May 2021 Cheng Lyu, Youwei Jia, Zhao Xu

Energy management of buildings is of vital importance for the urban low-carbon transition.

energy trading Management

Real-time Operation Optimization of Microgrids with Battery Energy Storage System: A Tube-based Model Predictive Control Approach

no code implementations10 Apr 2021 Cheng Lyu, Youwei Jia, Zhao Xu

In this paper, a tube-based model predictive control (MPC) approach is innovatively proposed in accommodating the real-time energy management of microgrids with battery ESS.

energy management Management +1

DIG: A Turnkey Library for Diving into Graph Deep Learning Research

1 code implementation23 Mar 2021 Meng Liu, Youzhi Luo, Limei Wang, Yaochen Xie, Hao Yuan, Shurui Gui, Haiyang Yu, Zhao Xu, Jingtun Zhang, Yi Liu, Keqiang Yan, Haoran Liu, Cong Fu, Bora Oztekin, Xuan Zhang, Shuiwang Ji

Although there exist several libraries for deep learning on graphs, they are aiming at implementing basic operations for graph deep learning.

Benchmarking Graph Generation +1

Self-Supervised Learning of Graph Neural Networks: A Unified Review

no code implementations22 Feb 2021 Yaochen Xie, Zhao Xu, Jingtun Zhang, Zhengyang Wang, Shuiwang Ji

Our unified treatment of SSL methods for GNNs sheds light on the similarities and differences of various methods, setting the stage for developing new methods and algorithms.

Self-Supervised Learning

Advanced Graph and Sequence Neural Networks for Molecular Property Prediction and Drug Discovery

1 code implementation2 Dec 2020 Zhengyang Wang, Meng Liu, Youzhi Luo, Zhao Xu, Yaochen Xie, Limei Wang, Lei Cai, Qi Qi, Zhuoning Yuan, Tianbao Yang, Shuiwang Ji

Here we develop a suite of comprehensive machine learning methods and tools spanning different computational models, molecular representations, and loss functions for molecular property prediction and drug discovery.

BIG-bench Machine Learning Drug Discovery +2

Robust Online Time Series Prediction with Recurrent Neural Networks

no code implementations26 Dec 2016 Tian Guo, Zhao Xu, Xin Yao, Haifeng Chen, Karl Aberer, Koichi Funaya

Time series forecasting for streaming data plays an important role in many real applications, ranging from IoT systems, cyber-networks, to industrial systems and healthcare.

Time Series Time Series Forecasting +1

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