Search Results for author: Dongjie Wang

Found 47 papers, 10 papers with code

Generative AI in Transportation Planning: A Survey

no code implementations10 Mar 2025 Longchao Da, Tiejin Chen, Zhuoheng Li, Shreyas Bachiraju, Huaiyuan Yao, Xiyang Hu, Zhengzhong Tu, Yue Zhao, Dongjie Wang, Xuanyu, Zhou, Ram Pendyala, Benjamin Stabler, Yezhou Yang, Xuesong Zhou, Hua Wei

From the transportation planning perspective, we examine the role of GenAI in automating descriptive, predictive, generative, simulation, and explainable tasks to enhance mobility systems.

Demand Forecasting Descriptive +2

A Survey on Data-Centric AI: Tabular Learning from Reinforcement Learning and Generative AI Perspective

no code implementations12 Feb 2025 Wangyang Ying, Cong Wei, Nanxu Gong, Xinyuan Wang, Haoyue Bai, Arun Vignesh Malarkkan, Sixun Dong, Dongjie Wang, Denghui Zhang, Yanjie Fu

This survey focuses on data-driven tabular data optimization, specifically exploring reinforcement learning (RL) and generative approaches for feature selection and feature generation as fundamental techniques for refining data spaces.

Feature Engineering feature selection +3

LEKA:LLM-Enhanced Knowledge Augmentation

no code implementations29 Jan 2025 Xinhao Zhang, Jinghan Zhang, Fengran Mo, Dongjie Wang, Yanjie Fu, Kunpeng Liu

Therefore, we design a knowledge augmentation method LEKA for knowledge transfer that actively searches for suitable knowledge sources that can enrich the target domain's knowledge.

Decision Making Transfer Learning

Iterative Feature Space Optimization through Incremental Adaptive Evaluation

no code implementations24 Jan 2025 Yanping Wu, Yanyong Huang, Zhengzhang Chen, Zijun Yao, Yanjie Fu, Kunpeng Liu, Xiao Luo, Dongjie Wang

We propose a weighted-sharing multi-head attention mechanism to encode key characteristics of the feature space into an embedding vector for evaluation.

CONDEN-FI: Consistency and Diversity Learning-based Multi-View Unsupervised Feature and In-stance Co-Selection

no code implementations9 Dec 2024 Yanyong Huang, Yuxin Cai, Dongjie Wang, Xiuwen Yi, Tianrui Li

The objective of multi-view unsupervised feature and instance co-selection is to simultaneously iden-tify the most representative features and samples from multi-view unlabeled data, which aids in mit-igating the curse of dimensionality and reducing instance size to improve the performance of down-stream tasks.

Diversity feature selection

Causally-Aware Unsupervised Feature Selection Learning

no code implementations16 Oct 2024 Zongxin Shen, Yanyong Huang, Dongjie Wang, Minbo Ma, Fengmao Lv, Tianrui Li

Additionally, previous graph-based methods fail to account for the differing impacts of non-causal and causal features in constructing the similarity graph, which leads to false links in the generated graph.

Clustering feature selection

Reinforcement Feature Transformation for Polymer Property Performance Prediction

no code implementations23 Sep 2024 Xuanming Hu, Dongjie Wang, Wangyang Ying, Yanjie Fu

This study focuses on improving polymer property performance prediction tasks by reconstructing an optimal and explainable descriptor representation space.

Feature Engineering Prediction +1

Revolutionizing Biomarker Discovery: Leveraging Generative AI for Bio-Knowledge-Embedded Continuous Space Exploration

no code implementations23 Sep 2024 Wangyang Ying, Dongjie Wang, Xuanming Hu, Ji Qiu, Jin Park, Yanjie Fu

Inspired by the success of generative AI, we think that the intricate knowledge of biomarker identification can be compressed into a continuous embedding space, thus enhancing the search for better biomarkers.

Decoder Prognosis

GUME: Graphs and User Modalities Enhancement for Long-Tail Multimodal Recommendation

1 code implementation17 Jul 2024 Guojiao Lin, Zhen Meng, Dongjie Wang, Qingqing Long, Yuanchun Zhou, Meng Xiao

By using the user modality enhancement strategy to maximize mutual information between these two features, we improve the generalization ability of user modality representations.

Multimodal Recommendation

Adaptive Collaborative Correlation Learning-based Semi-Supervised Multi-Label Feature Selection

no code implementations18 Jun 2024 Yanyong Huang, Li Yang, Dongjie Wang, Ke Li, Xiuwen Yi, Fengmao Lv, Tianrui Li

Then, the instance correlation and label correlation are integrated into the proposed regression model to adaptively learn both the sample similarity graph and the label similarity graph, which mutually enhance feature selection performance.

feature selection Missing Labels +1

Enhanced Gene Selection in Single-Cell Genomics: Pre-Filtering Synergy and Reinforced Optimization

no code implementations11 Jun 2024 Weiliang Zhang, Zhen Meng, Dongjie Wang, Min Wu, Kunpeng Liu, Yuanchun Zhou, Meng Xiao

In this study, we introduce an iterative gene panel selection strategy that is applicable to clustering tasks in single-cell genomics.

Reinforcement Learning (RL)

Enhancing Tabular Data Optimization with a Flexible Graph-based Reinforced Exploration Strategy

no code implementations11 Jun 2024 Xiaohan Huang, Dongjie Wang, Zhiyuan Ning, Ziyue Qiao, Qingqing Long, Haowei Zhu, Min Wu, Yuanchun Zhou, Meng Xiao

Tabular data optimization methods aim to automatically find an optimal feature transformation process that generates high-value features and improves the performance of downstream machine learning tasks.

Decision Making Feature Engineering

LEMMA-RCA: A Large Multi-modal Multi-domain Dataset for Root Cause Analysis

no code implementations8 Jun 2024 Lecheng Zheng, Zhengzhang Chen, Dongjie Wang, Chengyuan Deng, Reon Matsuoka, Haifeng Chen

Root cause analysis (RCA) is crucial for enhancing the reliability and performance of complex systems.

LEMMA

RATT: A Thought Structure for Coherent and Correct LLM Reasoning

1 code implementation4 Jun 2024 Jinghan Zhang, Xiting Wang, Weijieying Ren, Lu Jiang, Dongjie Wang, Kunpeng Liu

To address these limitations, we introduce the Retrieval Augmented Thought Tree (RATT), a novel thought structure that considers both overall logical soundness and factual correctness at each step of the thinking process.

Decision Making Fact Checking +2

Unsupervised Generative Feature Transformation via Graph Contrastive Pre-training and Multi-objective Fine-tuning

no code implementations27 May 2024 Wangyang Ying, Dongjie Wang, Xuanming Hu, Yuanchun Zhou, Charu C. Aggarwal, Yanjie Fu

For unsupervised feature set representation pretraining, we regard a feature set as a feature-feature interaction graph, and develop an unsupervised graph contrastive learning encoder to embed feature sets into vectors.

Contrastive Learning

Neuro-Symbolic Embedding for Short and Effective Feature Selection via Autoregressive Generation

1 code implementation26 Apr 2024 Nanxu Gong, Wangyang Ying, Dongjie Wang, Yanjie Fu

Within the learned embedding space, we leverage a multi-gradient search algorithm to find more robust and generalized embeddings with the objective of improving model performance and reducing feature subset redundancy.

feature selection

Knockoff-Guided Feature Selection via A Single Pre-trained Reinforced Agent

1 code implementation6 Mar 2024 Xinyuan Wang, Dongjie Wang, Wangyang Ying, Rui Xie, Haifeng Chen, Yanjie Fu

A deep Q-network, pre-trained with the original features and their corresponding pseudo labels, is employed to improve the efficacy of the exploration process in feature selection.

feature selection Pseudo Label

Feature Selection as Deep Sequential Generative Learning

no code implementations6 Mar 2024 Wangyang Ying, Dongjie Wang, Haifeng Chen, Yanjie Fu

(2) We leverage the trained feature subset utility evaluator as a gradient provider to guide the identification of the optimal feature subset embedding;(3) We decode the optimal feature subset embedding to autoregressively generate the best feature selection decision sequence with autostop.

feature selection

Dual-stage Flows-based Generative Modeling for Traceable Urban Planning

no code implementations3 Oct 2023 Xuanming Hu, Wei Fan, Dongjie Wang, Pengyang Wang, Yong Li, Yanjie Fu

We design several experiments to indicate that our framework can outperform compared to other generative models for the urban planning task.

Feature Interaction Aware Automated Data Representation Transformation

1 code implementation29 Sep 2023 Ehtesamul Azim, Dongjie Wang, Kunpeng Liu, Wei zhang, Yanjie Fu

Creating an effective representation space is crucial for mitigating the curse of dimensionality, enhancing model generalization, addressing data sparsity, and leveraging classical models more effectively.

Automated Feature Engineering Decision Making +4

Self-optimizing Feature Generation via Categorical Hashing Representation and Hierarchical Reinforcement Crossing

1 code implementation8 Sep 2023 Wangyang Ying, Dongjie Wang, Kunpeng Liu, Leilei Sun, Yanjie Fu

Feature generation aims to generate new and meaningful features to create a discriminative representation space. A generated feature is meaningful when the generated feature is from a feature pair with inherent feature interaction.

Descriptive

Traceable Group-Wise Self-Optimizing Feature Transformation Learning: A Dual Optimization Perspective

1 code implementation29 Jun 2023 Meng Xiao, Dongjie Wang, Min Wu, Kunpeng Liu, Hui Xiong, Yuanchun Zhou, Yanjie Fu

Feature transformation aims to reconstruct an effective representation space by mathematically refining the existing features.

Feature Engineering Q-Learning

Disentangled Causal Graph Learning for Online Unsupervised Root Cause Analysis

no code implementations18 May 2023 Dongjie Wang, Zhengzhang Chen, Yanjie Fu, Yanchi Liu, Haifeng Chen

In this paper, we propose CORAL, a novel online RCA framework that can automatically trigger the RCA process and incrementally update the RCA model.

Graph Learning

Towards Automated Urban Planning: When Generative and ChatGPT-like AI Meets Urban Planning

no code implementations8 Apr 2023 Dongjie Wang, Chang-Tien Lu, Yanjie Fu

The two fields of urban planning and artificial intelligence (AI) arose and developed separately.

Decoder

Beyond Discrete Selection: Continuous Embedding Space Optimization for Generative Feature Selection

no code implementations26 Feb 2023 Meng Xiao, Dongjie Wang, Min Wu, Pengfei Wang, Yuanchun Zhou, Yanjie Fu

Furthermore, we reconstruct feature selection solutions using these embeddings and select the feature subset with the highest performance for downstream tasks as the optimal subset.

Decoder feature selection

Deep Graph Stream SVDD: Anomaly Detection in Cyber-Physical Systems

1 code implementation24 Feb 2023 Ehtesamul Azim, Dongjie Wang, Yanjie Fu

The temporal embeddings are mapped to the new graph as node attributes to form weighted attributed graph.

Anomaly Detection

Dish-TS: A General Paradigm for Alleviating Distribution Shift in Time Series Forecasting

1 code implementation22 Feb 2023 Wei Fan, Pengyang Wang, Dongkun Wang, Dongjie Wang, Yuanchun Zhou, Yanjie Fu

The distribution shift in Time Series Forecasting (TSF), indicating series distribution changes over time, largely hinders the performance of TSF models.

Time Series Time Series Forecasting

Traceable Automatic Feature Transformation via Cascading Actor-Critic Agents

1 code implementation27 Dec 2022 Meng Xiao, Dongjie Wang, Min Wu, Ziyue Qiao, Pengfei Wang, Kunpeng Liu, Yuanchun Zhou, Yanjie Fu

Feature transformation for AI is an essential task to boost the effectiveness and interpretability of machine learning (ML).

feature selection

Boosting Urban Traffic Speed Prediction via Integrating Implicit Spatial Correlations

no code implementations25 Dec 2022 Dongkun Wang, Wei Fan, Pengyang Wang, Pengfei Wang, Dongjie Wang, Denghui Zhang, Yanjie Fu

To tackle the challenge, we propose a generic model for enabling the current traffic speed prediction methods to preserve implicit spatial correlations.

Prediction

Human-instructed Deep Hierarchical Generative Learning for Automated Urban Planning

no code implementations1 Dec 2022 Dongjie Wang, Lingfei Wu, Denghui Zhang, Jingbo Zhou, Leilei Sun, Yanjie Fu

The third stage is to leverage multi-attentions to model the zone-zone peer dependencies of the functionality projections to generate grid-level land-use configurations.

Automated Urban Planning aware Spatial Hierarchies and Human Instructions

no code implementations26 Sep 2022 Dongjie Wang, Kunpeng Liu, Yanyong Huang, Leilei Sun, Bowen Du, Yanjie Fu

While automated urban planners have been examined, they are constrained because of the following: 1) neglecting human requirements in urban planning; 2) omitting spatial hierarchies in urban planning, and 3) lacking numerous urban plan data samples.

Decoder

Self-Optimizing Feature Transformation

no code implementations16 Sep 2022 Meng Xiao, Dongjie Wang, Min Wu, Kunpeng Liu, Hui Xiong, Yuanchun Zhou, Yanjie Fu

Feature transformation aims to extract a good representation (feature) space by mathematically transforming existing features.

Feature Engineering Outlier Detection

C$^{2}$IMUFS: Complementary and Consensus Learning-based Incomplete Multi-view Unsupervised Feature Selection

no code implementations20 Aug 2022 Yanyong Huang, Zongxin Shen, Yuxin Cai, Xiuwen Yi, Dongjie Wang, Fengmao Lv, Tianrui Li

Besides, learning the complete similarity graph, as an important promising technology in existing MUFS methods, cannot achieve due to the missing views.

feature selection

Group-wise Reinforcement Feature Generation for Optimal and Explainable Representation Space Reconstruction

no code implementations28 May 2022 Dongjie Wang, Yanjie Fu, Kunpeng Liu, Xiaolin Li, Yan Solihin

We reformulate representation space reconstruction into an interactive process of nested feature generation and selection, where feature generation is to generate new meaningful and explicit features, and feature selection is to eliminate redundant features to control feature sizes.

Feature Engineering feature selection +1

Reinforced Imitative Graph Learning for Mobile User Profiling

no code implementations13 Mar 2022 Dongjie Wang, Pengyang Wang, Yanjie Fu, Kunpeng Liu, Hui Xiong, Charles E. Hughes

The profiling framework is formulated into a reinforcement learning task, where an agent is a next-visit planner, an action is a POI that a user will visit next, and the state of the environment is a fused representation of a user and spatial entities.

Graph Learning

Online POI Recommendation: Learning Dynamic Geo-Human Interactions in Streams

no code implementations19 Jan 2022 Dongjie Wang, Kunpeng Liu, Hui Xiong, Yanjie Fu

An event that a user visits a POI in stream updates the states of both users and geospatial contexts; the agent perceives the updated environment state to make online recommendations.

reinforcement-learning Reinforcement Learning +1

Deep Human-guided Conditional Variational Generative Modeling for Automated Urban Planning

no code implementations12 Oct 2021 Dongjie Wang, Kunpeng Liu, Pauline Johnson, Leilei Sun, Bowen Du, Yanjie Fu

Existing studies usually ignore the need of personalized human guidance in planning, and spatial hierarchical structure in planning generation.

Decoder Image Generation

Efficient Reinforced Feature Selection via Early Stopping Traverse Strategy

no code implementations29 Sep 2021 Kunpeng Liu, Pengfei Wang, Dongjie Wang, Wan Du, Dapeng Oliver Wu, Yanjie Fu

In this paper, we propose a single-agent Monte Carlo based reinforced feature selection (MCRFS) method, as well as two efficiency improvement strategies, i. e., early stopping (ES) strategy and reward-level interactive (RI) strategy.

feature selection

Automated Feature-Topic Pairing: Aligning Semantic and Embedding Spaces in Spatial Representation Learning

no code implementations22 Sep 2021 Dongjie Wang, Kunpeng Liu, David Mohaisen, Pengyang Wang, Chang-Tien Lu, Yanjie Fu

Texts of spatial entities, on the other hand, provide semantic understanding of latent feature labels, but is insensible to deep SRL models.

Representation Learning

Defending Water Treatment Networks: Exploiting Spatio-temporal Effects for Cyber Attack Detection

no code implementations26 Aug 2020 Dongjie Wang, Pengyang Wang, Jingbo Zhou, Leilei Sun, Bowen Du, Yanjie Fu

To this end, we propose a structured anomaly detection framework to defend WTNs by modeling the spatio-temporal characteristics of cyber attacks in WTNs.

Anomaly Detection Attribute +2

DeepSTCL: A Deep Spatio-temporal ConvLSTM for Travel Demand Prediction

no code implementations22 Aug 2020 Dongjie Wang, Yan Yang, Shangming Ning

Urban resource scheduling is an important part of the development of a smart city, and transportation resources are the main components of urban resources.

Deep Learning Demand Forecasting +2

Reimagining City Configuration: Automated Urban Planning via Adversarial Learning

no code implementations22 Aug 2020 Dongjie Wang, Yanjie Fu, Pengyang Wang, Bo Huang, Chang-Tien Lu

The objective is then to propose an adversarial learning framework that can automatically generate such tensor for an unplanned area.

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