1 code implementation • 31 Oct 2024 • Jaeyoon Kim, Junyu Xuan, Christy Liang, Farookh Hussain
An existing approach, Policy Expansion (PEX), utilizes a policy set composed of both policies without modifying the offline policy for exploration and learning.
no code implementations • 25 Sep 2024 • Mengjing Wu, Junyu Xuan, Jie Lu
Classical parameter-space Bayesian inference for Bayesian neural networks (BNNs) suffers from several unresolved prior issues, such as knowledge encoding intractability and pathological behaviours in deep networks, which can lead to improper posterior inference.
no code implementations • 21 Jul 2024 • Guanjin Wang, Junyu Xuan, Penghao Wang, Chengdao Li, Jie Lu
Artificial Intelligence (AI) has emerged as a key driver of precision agriculture, facilitating enhanced crop productivity, optimized resource use, farm sustainability, and informed decision-making.
no code implementations • 23 May 2024 • Zihe Liu, Jie Lu, Guangquan Zhang, Junyu Xuan
The model adapts to the new environment through behavior regularization based on the extent of changes.
1 code implementation • 4 May 2024 • Jaeyoon Kim, Junyu Xuan, Christy Liang, Farookh Hussain
Our suggested model is termed Non-Monolithic unsupervised Pre-training with Successor features (NMPS), which improves the performance of the original monolithic exploration method of pre-training with SFs.
1 code implementation • 17 Apr 2024 • Wei Duan, Jie Lu, Junyu Xuan
To overcome these limitations, we present a novel approach to infer the Group-Aware Coordination Graph (GACG), which is designed to capture both the cooperation between agent pairs based on current observations and group-level dependencies from behaviour patterns observed across trajectories.
1 code implementation • 28 Mar 2024 • Wei Duan, Jie Lu, Junyu Xuan
The LTS-CG leverages agents' historical observations to calculate an agent-pair probability matrix, where a sparse graph is sampled from and used for knowledge exchange between agents, thereby simultaneously capturing agent dependencies and relation uncertainty.
no code implementations • 18 Mar 2024 • Wei Duan, Jie Lu, Yu Guang Wang, Junyu Xuan
Experiments on various real-world graph datasets demonstrate the effectiveness of our approach in improving the diversity of negative samples and overall learning performance.
1 code implementation • 2 May 2023 • Jaeyoon Kim, Junyu Xuan, Christy Liang, Farookh Hussain
The issue of `when' of a monolithic exploration in the usual RL exploration behaviour binds an exploratory action to an exploitational action of an agent.
1 code implementation • 5 Dec 2022 • Wei Duan, Junyu Xuan, Maoying Qiao, Jie Lu
However, there are more non-neighbour nodes in the whole graph, which provide diverse and useful information for the representation update.
1 code implementation • 3 Oct 2022 • Wei Duan, Junyu Xuan, Maoying Qiao, Jie Lu
An interesting way to understand GCNs is to think of them as a message passing mechanism where each node updates its representation by accepting information from its neighbours (also known as positive samples).
no code implementations • 27 Sep 2021 • Junyu Xuan, Jie Lu, Guangquan Zhang
Transfer learning where the behavior of extracting transferable knowledge from the source domain(s) and reusing this knowledge to target domain has become a research area of great interest in the field of artificial intelligence.
no code implementations • 20 Sep 2021 • Adi Lin, Jie Lu, Junyu Xuan, Fujin Zhu, Guangquan Zhang
Causal effect estimation for dynamic treatment regimes (DTRs) contributes to sequential decision making.
1 code implementation • 17 Jul 2021 • Jaeyoon Kim, Junyu Xuan, Christy Liang, Farookh Hussain
We propose a novel HRL model supporting the optimal level synchronization using the off-policy correction technique with a deep generative model.
Hierarchical Reinforcement Learning reinforcement-learning +1
1 code implementation • NeurIPS 2020 • Zheng Ma, Junyu Xuan, Yu Guang Wang, Ming Li, Pietro Lio
Borrowing ideas from physics, we propose a path integral based graph neural networks (PAN) for classification and regression tasks on graphs.
1 code implementation • 19 Jul 2019 • Zhen Fang, Jie Lu, Feng Liu, Junyu Xuan, Guangquan Zhang
The aim of unsupervised domain adaptation is to leverage the knowledge in a labeled (source) domain to improve a model's learning performance with an unlabeled (target) domain -- the basic strategy being to mitigate the effects of discrepancies between the two distributions.
Ranked #24 on Domain Adaptation on Office-Home
no code implementations • 18 Jul 2017 • Junyu Xuan, Jie Lu, Guangquan Zhang, Richard Yi Da Xu
The cooperative hierarchical structure is a common and significant data structure observed in, or adopted by, many research areas, such as: text mining (author-paper-word) and multi-label classification (label-instance-feature).
no code implementations • 12 Jul 2015 • Junyu Xuan, Jie Lu, Guangquan Zhang, Richard Yi Da Xu, Xiangfeng Luo
Under this same framework, two classes of correlation function are proposed (1) using Bivariate beta distribution and (2) using Copula function.
no code implementations • 30 Mar 2015 • Junyu Xuan, Jie Lu, Guangquan Zhang, Richard Yi Da Xu, Xiangfeng Luo
One branch of these works is the so-called Author Topic Model (ATM), which incorporates the authors's interests as side information into the classical topic model.
no code implementations • 30 Mar 2015 • Junyu Xuan, Jie Lu, Guangquan Zhang, Richard Yi Da Xu, Xiangfeng Luo
Traditional Relational Topic Models provide a way to discover the hidden topics from a document network.