Search Results for author: Jingtao Ding

Found 18 papers, 11 papers with code

Spatio-Temporal Few-Shot Learning via Diffusive Neural Network Generation

1 code implementation19 Feb 2024 Yuan Yuan, Chenyang Shao, Jingtao Ding, Depeng Jin, Yong Li

Spatio-temporal modeling is foundational for smart city applications, yet it is often hindered by data scarcity in many cities and regions.

Denoising Few-Shot Learning +1

UniST: A Prompt-Empowered Universal Model for Urban Spatio-Temporal Prediction

no code implementations19 Feb 2024 Yuan Yuan, Jingtao Ding, Jie Feng, Depeng Jin, Yong Li

Urban spatio-temporal prediction is crucial for informed decision-making, such as transportation management, resource optimization, and urban planning.

Decision Making Management

Beyond Imitation: Generating Human Mobility from Context-aware Reasoning with Large Language Models

no code implementations15 Feb 2024 Chenyang Shao, Fengli Xu, Bingbing Fan, Jingtao Ding, Yuan Yuan, Meng Wang, Yong Li

In this paper, we design a novel Mobility Generation as Reasoning (MobiGeaR) framework that prompts LLM to recursively generate mobility behaviour.

In-Context Learning

Social Physics Informed Diffusion Model for Crowd Simulation

1 code implementation8 Feb 2024 Hongyi Chen, Jingtao Ding, Yong Li, Yue Wang, Xiao-Ping Zhang

In this paper, we propose a social physics-informed diffusion model named SPDiff to mitigate the above gap.

Denoising Physics-informed machine learning

Estimating On-road Transportation Carbon Emissions from Open Data of Road Network and Origin-destination Flow Data

1 code implementation7 Feb 2024 Jinwei Zeng, Yu Liu, Jingtao Ding, Jian Yuan, Yong Li

To relieve this issue by utilizing the strong pattern recognition of artificial intelligence, we incorporate two sources of open data representative of the transportation demand and capacity factors, the origin-destination (OD) flow data and the road network data, to build a hierarchical heterogeneous graph learning method for on-road carbon emission estimation (HENCE).

Graph Learning

Towards Generative Modeling of Urban Flow through Knowledge-enhanced Denoising Diffusion

1 code implementation19 Sep 2023 Zhilun Zhou, Jingtao Ding, Yu Liu, Depeng Jin, Yong Li

To capture the effect of multiple factors on urban flow, such as region features and urban environment, we employ diffusion model to generate urban flow for regions under different conditions.

Denoising

Complexity-aware Large Scale Origin-Destination Network Generation via Diffusion Model

no code implementations8 Jun 2023 Can Rong, Jingtao Ding, Zhicheng Liu, Yong Li

The Origin-Destination~(OD) networks provide an estimation of the flow of people from every region to others in the city, which is an important research topic in transportation, urban simulation, etc.

Denoising

Road Planning for Slums via Deep Reinforcement Learning

1 code implementation22 May 2023 Yu Zheng, Hongyuan Su, Jingtao Ding, Depeng Jin, Yong Li

Existing re-blocking or heuristic methods are either time-consuming which cannot generalize to different slums, or yield sub-optimal road plans in terms of accessibility and construction costs.

Blocking reinforcement-learning

Spatio-temporal Diffusion Point Processes

2 code implementations21 May 2023 Yuan Yuan, Jingtao Ding, Chenyang Shao, Depeng Jin, Yong Li

To enhance the learning of each step, an elaborated spatio-temporal co-attention module is proposed to capture the interdependence between the event time and space adaptively.

Epidemiology Point Processes

Robust Preference-Guided Denoising for Graph based Social Recommendation

1 code implementation15 Mar 2023 Yuhan Quan, Jingtao Ding, Chen Gao, Lingling Yi, Depeng Jin, Yong Li

Graph Neural Network(GNN) based social recommendation models improve the prediction accuracy of user preference by leveraging GNN in exploiting preference similarity contained in social relations.

Denoising Relation

Knowledge-infused Contrastive Learning for Urban Imagery-based Socioeconomic Prediction

1 code implementation25 Feb 2023 Yu Liu, Xin Zhang, Jingtao Ding, Yanxin Xi, Yong Li

To address such issues, in this paper, we propose a Knowledge-infused Contrastive Learning (KnowCL) model for urban imagery-based socioeconomic prediction.

Contrastive Learning Representation Learning

Learning to Simulate Daily Activities via Modeling Dynamic Human Needs

1 code implementation9 Feb 2023 Yuan Yuan, Huandong Wang, Jingtao Ding, Depeng Jin, Yong Li

To enhance the fidelity and utility of the generated activity data, our core idea is to model the evolution of human needs as the underlying mechanism that drives activity generation in the simulation model.

Imitation Learning Scheduling

Knowledge-driven Site Selection via Urban Knowledge Graph

no code implementations1 Nov 2021 Yu Liu, Jingtao Ding, Yong Li

Specifically, motivated by distilled knowledge and rich semantics in KG, we firstly construct an urban KG (UrbanKG) with cities' key elements and semantic relationships captured.

Feature Engineering

Simplify and Robustify Negative Sampling for Implicit Collaborative Filtering

1 code implementation NeurIPS 2020 Jingtao Ding, Yuhan Quan, Quanming Yao, Yong Li, Depeng Jin

Negative sampling approaches are prevalent in implicit collaborative filtering for obtaining negative labels from massive unlabeled data.

Collaborative Filtering

Cannot find the paper you are looking for? You can Submit a new open access paper.