no code implementations • 10 Jan 2025 • Shangjin Zhai, Zhichao Ye, Jialin Liu, Weijian Xie, Jiaqi Hu, Zhen Peng, Hua Xue, Danpeng Chen, Xiaomeng Wang, Lei Yang, Nan Wang, Haomin Liu, Guofeng Zhang
Recent advances in large reconstruction and generative models have significantly improved scene reconstruction and novel view generation.
no code implementations • 31 Dec 2024 • HanQin Cai, Chandra Kundu, Jialin Liu, Wotao Yin
This paper proposes a novel scalable and learnable non-convex approach, coined Learned Robust Matrix Completion (LRMC), for large-scale RMC problems.
no code implementations • 21 Nov 2024 • Qingquan Zhang, Qiqi Duan, Bo Yuan, Yuhui Shi, Jialin Liu
In our research, we delve deeper into the intricate challenge of harmonising accuracy and fairness in the enhancement of LLMs.
no code implementations • 29 Sep 2024 • Jialin Liu, Jianhua Wu, Jie Liu, Yutai Duan
The key of our approach is that we devise an attention mechanism as a knowledge mixture module to adaptively integrate information from each LoRA.
1 code implementation • 27 Sep 2024 • Qingquan Zhang, Jialin Liu, Xin Yao
The dynamically determined representative set is then used as optimising objectives of the MOEL framework and can vary with time.
1 code implementation • 16 Aug 2024 • Xue Wang, Tian Zhou, Jianqing Zhu, Jialin Liu, Kun Yuan, Tao Yao, Wotao Yin, Rong Jin, HanQin Cai
Attention based models have achieved many remarkable breakthroughs in numerous applications.
no code implementations • 11 Aug 2024 • Jialin Liu, Diansheng Liao
Constructing the new generation information processing system by mimicking biological nervous system is a feasible way for implement of high-efficient intelligent sensing device and bionic robot.
no code implementations • 15 Jun 2024 • Qingquan Zhang, Yuchen Li, Yuhang Lin, Handing Wang, Jialin Liu
Designed to bridge theoretical optimisation strategies with practical game generation applications, the interface is also accessible to both researchers and beginners to multi-objective evolutionary algorithms or procedural content generation on a website.
1 code implementation • 13 Jun 2024 • Shiying Hu, Zengrong Huang, Chengpeng Hu, Jialin Liu
Recently, procedural content generation has exhibited considerable advancements in the domain of 2D game level generation such as Super Mario Bros. and Sokoban through large language models (LLMs).
no code implementations • 9 Jun 2024 • Ziang Chen, Xiaohan Chen, Jialin Liu, Xinshang Wang, Wotao Yin
In this work, we investigate the expressive or representative power of GNNs, a crucial aspect of neural network theory, specifically in the context of QP tasks, with both continuous and mixed-integer settings.
no code implementations • 24 May 2024 • Xiaohan Chen, Jialin Liu, Wotao Yin
Learning to Optimize (L2O) stands at the intersection of traditional optimization and machine learning, utilizing the capabilities of machine learning to enhance conventional optimization techniques.
no code implementations • 23 Apr 2024 • Chengpeng Hu, Jialin Liu, Xin Yao
Recently, evolutionary reinforcement learning has obtained much attention in various domains.
no code implementations • 16 Apr 2024 • Jiyuan Pei, Jialin Liu, Yi Mei
A novel hybrid framework that learns to dynamically and adaptively select promising search operators is proposed.
no code implementations • 15 Apr 2024 • Yuchen Li, Ziqi Wang, Qingquan Zhang, Bo Yuan, Jialin Liu
This survey comprehensively reviews the multi-dimensionality of game scenario diversity, spotlighting the innovative use of procedural content generation and other fields as cornerstones for enriching player experiences through diverse game scenarios.
no code implementations • 11 Apr 2024 • Chengpeng Hu, Yunlong Zhao, Jialin Liu
Recently, the emergence of large language models (LLMs) has unlocked new opportunities for procedural content generation.
no code implementations • 11 Feb 2024 • Ziang Chen, Jialin Liu, Xiaohan Chen, Xinshang Wang, Wotao Yin
In the literature, message-passing GNN (MP-GNN), as the simplest GNN structure, is frequently used as a fast approximation of SB and we find that not all MILPs's SB can be represented with MP-GNN.
no code implementations • 27 Nov 2023 • Jialin Liu, Lu Yan, Xiaowei Liu, Yuzhuo Dai, Fanggen Lu, Yuanting Ma, Muzhou Hou, Zheng Wang
We conducted image processing of HRM to predict the esophageal contraction vigor for assisting the evaluation of esophageal dynamic function.
no code implementations • 30 Oct 2023 • Jialin Liu, Xinyan Su, Peng Zhou, Xiangyu Zhao, Jun Li
Mitigation of the survivor bias is achieved though counterfactual consistency.
no code implementations • 30 Oct 2023 • Jialin Liu, Xinyan Su, Zeyu He, Xiangyu Zhao, Jun Li
In this research, we focus on the problem of learning to reward (LTR), which is fundamental to reinforcement learning.
1 code implementation • 20 Oct 2023 • Haoyu Wang, Jialin Liu, Xiaohan Chen, Xinshang Wang, Pan Li, Wotao Yin
Mixed-integer linear programming (MILP) stands as a notable NP-hard problem pivotal to numerous crucial industrial applications.
no code implementations • 19 Jul 2023 • Shuo Huang, Chengpeng Hu, Julian Togelius, Jialin Liu
Procedurally generating cities in Minecraft provides players more diverse scenarios and could help understand and improve the design of cities in other digital worlds and the real world.
1 code implementation • 29 May 2023 • Jialin Liu, Xiaohan Chen, Zhangyang Wang, Wotao Yin, HanQin Cai
Learning to Optimize (L2O), a technique that utilizes machine learning to learn an optimization algorithm automatically from data, has gained arising attention in recent years.
1 code implementation • 23 May 2023 • Chengpeng Hu, ZiMing Wang, Jialin Liu, Junyi Wen, Bifei Mao, Xin Yao
Experimental results on the problem instances demonstrate the outstanding performance of our proposed approach compared with eight state-of-the-art constrained and non-constrained reinforcement learning algorithms, and widely used dispatching rules for material handling.
no code implementations • 3 May 2023 • Jiyuan Pei, Hao Tong, Jialin Liu, Yi Mei, Xin Yao
In this paper, we propose to empirically analyse the relationship between operators in terms of the correlation between their local optima and develop a measure for quantifying their relationship.
2 code implementations • 26 Apr 2023 • Chengpeng Hu, Yunlong Zhao, Ziqi Wang, Haocheng Du, Jialin Liu
Those platforms provide ideal benchmarks for exploring and comparing artificial intelligence ideas and techniques.
1 code implementation • 19 Apr 2023 • Chengpeng Hu, Jiyuan Pei, Jialin Liu, Xin Yao
Evolutionary algorithms have been used to evolve a population of actors to generate diverse experiences for training reinforcement learning agents, which helps to tackle the temporal credit assignment problem and improves the exploration efficiency.
no code implementations • 4 Apr 2023 • Jialin Liu, Ning Miao, Chongzhou Fang, Houman Homayoun, Han Wang
In particular, we first identify the vulnerability of DTW for ECG classification, i. e., the correlation between warping path choice and prediction results.
no code implementations • 12 Dec 2022 • Hui Wang, Jialin Liu, Feng Li, Hao Ji, Bin Jia, Ziyou Gao
Numerical cases of Beijing Metro Line 9 verify the efficiency and effectiveness of our proposed model, and results show that: (1) when occurring a disruption event during peak hours, the impact on the normal timetable is greater, and passengers in the direction with fewer train services are more affected; (2) if passengers stranded at the terminal stations of disruption area are not transported in time, they will rapidly increase at a speed of more than 300 passengers per minute; (3) compared with the fixed shortest path, using the response vehicles reduces the total travel time about 7%.
1 code implementation • 6 Dec 2022 • Ziqi Wang, Tianye Shu, Jialin Liu
Concluding our outcomes and analysis, future work on endless online level generation via reinforcement learning should address the issue of diversity while assuring the occurrence of state space closure and quality.
1 code implementation • 19 Oct 2022 • Ziang Chen, Jialin Liu, Xinshang Wang, Jianfeng Lu, Wotao Yin
While Mixed-integer linear programming (MILP) is NP-hard in general, practical MILP has received roughly 100--fold speedup in the past twenty years.
1 code implementation • 25 Sep 2022 • Ziang Chen, Jialin Liu, Xinshang Wang, Jianfeng Lu, Wotao Yin
In particular, the graph neural network (GNN) is considered a suitable ML model for optimization problems whose variables and constraints are permutation--invariant, for example, the linear program (LP).
1 code implementation • 12 Jul 2022 • Ziqi Wang, Jialin Liu
Game consists of multiple types of content, while the harmony of different content types play an essential role in game design.
1 code implementation • 5 Jul 2022 • Keyuan Zhang, Jiayu Bai, Jialin Liu
Recent years, there has been growing interests in experience-driven procedural level generation.
1 code implementation • NeurIPS 2021 • Xiaohan Chen, Jialin Liu, Zhangyang Wang, Wotao Yin
Learned Iterative Shrinkage-Thresholding Algorithm (LISTA) introduces the concept of unrolling an iterative algorithm and training it like a neural network.
1 code implementation • NeurIPS 2021 • HanQin Cai, Jialin Liu, Wotao Yin
Robust principal component analysis (RPCA) is a critical tool in modern machine learning, which detects outliers in the task of low-rank matrix reconstruction.
1 code implementation • 7 Jul 2021 • Ziqi Wang, Jialin Liu, Georgios N. Yannakakis
Search-based procedural content generation methods have recently been introduced for the autonomous creation of bullet hell games.
1 code implementation • 30 Jun 2021 • Tianye Shu, Jialin Liu, Georgios N. Yannakakis
In particular, the RL designers of Super Mario Bros generate and concatenate level segments while considering the diversity among the segments.
1 code implementation • 23 Mar 2021 • Tianlong Chen, Xiaohan Chen, Wuyang Chen, Howard Heaton, Jialin Liu, Zhangyang Wang, Wotao Yin
It automates the design of an optimization method based on its performance on a set of training problems.
no code implementations • ICLR 2021 • Jiayi Shen, Xiaohan Chen, Howard Heaton, Tianlong Chen, Jialin Liu, Wotao Yin, Zhangyang Wang
We first present Twin L2O, the first dedicated minimax L2O framework consisting of two LSTMs for updating min and max variables, respectively.
1 code implementation • 11 Nov 2020 • Chengpeng Hu, Ziqi Wang, Tianye Shu, Hao Tong, Julian Togelius, Xin Yao, Jialin Liu
Our proposed technique is implemented with three state-of-the-art reinforcement learning algorithms and tested on the game set of the 2020 General Video Game AI Learning Competition.
no code implementations • 9 Oct 2020 • Jialin Liu, Sam Snodgrass, Ahmed Khalifa, Sebastian Risi, Georgios N. Yannakakis, Julian Togelius
This article surveys the various deep learning methods that have been applied to generate game content directly or indirectly, discusses deep learning methods that could be used for content generation purposes but are rarely used today, and envisages some limitations and potential future directions of deep learning for procedural content generation.
5 code implementations • ICLR 2021 • Lee Xiong, Chenyan Xiong, Ye Li, Kwok-Fung Tang, Jialin Liu, Paul Bennett, Junaid Ahmed, Arnold Overwijk
In this paper, we identify that the main bottleneck is in the training mechanisms, where the negative instances used in training are not representative of the irrelevant documents in testing.
Ranked #7 on Passage Retrieval on Natural Questions
no code implementations • 27 Jun 2020 • Han Zhang, Jialin Liu, Xin Yao
The reliable facility location problem (RFLP) is an important research topic of operational research and plays a vital role in the decision-making and management of modern supply chain and logistics.
no code implementations • 1 Jun 2020 • Paul Sinz, Michael W. Swift, Xavier Brumwell, Jialin Liu, Kwang Jin Kim, Yue Qi, Matthew Hirn
The dream of machine learning in materials science is for a model to learn the underlying physics of an atomic system, allowing it to move beyond interpolation of the training set to the prediction of properties that were not present in the original training data.
1 code implementation • 16 May 2020 • Aibek Musaev, Jiangping Wang, Liang Zhu, Cheng Li, Yi Chen, Jialin Liu, Wanqi Zhang, Juan Mei, De Wang
In addition, we describe an illustrative example of the use of this dataset for tracking participants based on a head tracking model in an effort to minimize errors due to occlusion.
4 code implementations • 13 May 2020 • Tianye Shu, Ziqi Wang, Jialin Liu, Xin Yao
However, defective levels with illegal patterns may be generated due to the violation of constraints for level design.
no code implementations • 29 Apr 2020 • Jialin Liu, Antoine Moreau, Mike Preuss, Baptiste Roziere, Jeremy Rapin, Fabien Teytaud, Olivier Teytaud
Choosing automatically the right algorithm using problem descriptors is a classical component of combinatorial optimization.
1 code implementation • 31 Mar 2020 • Jacob Schrum, Jake Gutierrez, Vanessa Volz, Jialin Liu, Simon Lucas, Sebastian Risi
A user study shows that both the evolution and latent space exploration features are appreciated, with a slight preference for direct exploration, but combining these features allows users to discover even better levels.
no code implementations • 6 Mar 2020 • Jian Kang, Danfeng Hong, Jialin Liu, Gerald Baier, Naoto Yokoya, Begüm Demir
Interferometric phase restoration has been investigated for decades and most of the state-of-the-art methods have achieved promising performances for InSAR phase restoration.
1 code implementation • arXiv 2020 • Jialin Liu, Fei Chao, Chih-Min Lin
Data augmentation is one of the most effective approaches for improving the accuracy of modern machine learning models, and it is also indispensable to train a deep model for meta-learning.
no code implementations • 25 Sep 2019 • Jialin Liu, Fei Chao, Yu-Chen Lin, Chih-Min Lin
The results show that predicting stock price through price rate of change is better than predicting absolute prices directly.
1 code implementation • arXiv 2019 • Jialin Liu, Fei Chao, Longzhi Yang, Chih-Min Lin, Qiang Shen
This work proposes a method that controls the gradient descent process of the model parameters of a neural network by limiting the model parameters in a low-dimensional latent space.
no code implementations • 19 Sep 2019 • Jialin Liu, Chih-Min Lin, Fei Chao
Market economy closely connects aspects to all walks of life.
3 code implementations • 8 Jul 2019 • Atılım Güneş Baydin, Lei Shao, Wahid Bhimji, Lukas Heinrich, Lawrence Meadows, Jialin Liu, Andreas Munk, Saeid Naderiparizi, Bradley Gram-Hansen, Gilles Louppe, Mingfei Ma, Xiaohui Zhao, Philip Torr, Victor Lee, Kyle Cranmer, Prabhat, Frank Wood
Probabilistic programming languages (PPLs) are receiving widespread attention for performing Bayesian inference in complex generative models.
1 code implementation • 14 May 2019 • Ernest K. Ryu, Jialin Liu, Sicheng Wang, Xiaohan Chen, Zhangyang Wang, Wotao Yin
Plug-and-play (PnP) is a non-convex framework that integrates modern denoising priors, such as BM3D or deep learning-based denoisers, into ADMM or other proximal algorithms.
no code implementations • ICLR 2019 • Jialin Liu, Xiaohan Chen, Zhangyang Wang, Wotao Yin
In this work, we propose Analytic LISTA (ALISTA), where the weight matrix in LISTA is computed as the solution to a data-free optimization problem, leaving only the stepsize and threshold parameters to data-driven learning.
no code implementations • 22 Apr 2019 • Hao Tong, Jialin Liu, Xin Yao
Surrogate-assisted evolutionary algorithms (SAEAs) are powerful optimisation tools for computationally expensive problems (CEPs).
1 code implementation • 3 Apr 2019 • Ivan Bravi, Simon Lucas, Diego Perez-Liebana, Jialin Liu
Game-based benchmarks have been playing an essential role in the development of Artificial Intelligence (AI) techniques.
1 code implementation • 17 Jan 2019 • Hao Tong, Changwu Huang, Jialin Liu, Xin Yao
A performance selector is designed to switch the search dynamically and automatically between the global and local search stages.
1 code implementation • 3 Jan 2019 • Simon M. Lucas, Jialin Liu, Ivan Bravi, Raluca D. Gaina, John Woodward, Vanessa Volz, Diego Perez-Liebana
This paper introduces a simple and fast variant of Planet Wars as a test-bed for statistical planning based Game AI agents, and for noisy hyper-parameter optimisation.
no code implementations • 14 Dec 2018 • Doris Xin, Stephen Macke, Litian Ma, Jialin Liu, Shuchen Song, Aditya Parameswaran
Machine learning workflow development is a process of trial-and-error: developers iterate on workflows by testing out small modifications until the desired accuracy is achieved.
3 code implementations • NeurIPS 2018 • Xiaohan Chen, Jialin Liu, Zhangyang Wang, Wotao Yin
In this work, we study unfolded ISTA (Iterative Shrinkage Thresholding Algorithm) for sparse signal recovery.
no code implementations • 3 Aug 2018 • Doris Xin, Litian Ma, Jialin Liu, Stephen Macke, Shuchen Song, Aditya Parameswaran
Data application developers and data scientists spend an inordinate amount of time iterating on machine learning (ML) workflows -- by modifying the data pre-processing, model training, and post-processing steps -- via trial-and-error to achieve the desired model performance.
3 code implementations • NeurIPS 2019 • Atılım Güneş Baydin, Lukas Heinrich, Wahid Bhimji, Lei Shao, Saeid Naderiparizi, Andreas Munk, Jialin Liu, Bradley Gram-Hansen, Gilles Louppe, Lawrence Meadows, Philip Torr, Victor Lee, Prabhat, Kyle Cranmer, Frank Wood
We present a novel probabilistic programming framework that couples directly to existing large-scale simulators through a cross-platform probabilistic execution protocol, which allows general-purpose inference engines to record and control random number draws within simulators in a language-agnostic way.
2 code implementations • 6 Jun 2018 • Ruben Rodriguez Torrado, Philip Bontrager, Julian Togelius, Jialin Liu, Diego Perez-Liebana
In this paper, we describe how we interface GVGAI to the OpenAI Gym environment, a widely used way of connecting agents to reinforcement learning problems.
1 code implementation • 4 Jun 2018 • Ivan Bravi, Jialin Liu, Diego Perez-Liebana, Simon Lucas
The General Video Game AI competitions have been the testing ground for several techniques for game playing, such as evolutionary computation techniques, tree search algorithms, hyper heuristic based or knowledge based algorithms.
3 code implementations • 2 May 2018 • Vanessa Volz, Jacob Schrum, Jialin Liu, Simon M. Lucas, Adam Smith, Sebastian Risi
This paper trains a GAN to generate levels for Super Mario Bros using a level from the Video Game Level Corpus.
1 code implementation • 28 Feb 2018 • Diego Perez-Liebana, Jialin Liu, Ahmed Khalifa, Raluca D. Gaina, Julian Togelius, Simon M. Lucas
In 2014, The General Video Game AI (GVGAI) competition framework was created and released with the purpose of providing researchers a common open-source and easy to use platform for testing their AI methods with potentially infinity of games created using Video Game Description Language (VGDL).
no code implementations • 24 Feb 2018 • Chang-Shing Lee, Mei-Hui Wang, Chi-Shiang Wang, Olivier Teytaud, Jialin Liu, Su-Wei Lin, Pi-Hsia Hung
This paper proposes an agent with particle swarm optimization (PSO) based on a Fuzzy Markup Language (FML) for students learning performance evaluation and educational applications, and the proposed agent is according to the response data from a conventional test and an item response theory.
4 code implementations • 16 Feb 2018 • Simon M. Lucas, Jialin Liu, Diego Perez-Liebana
This paper describes the N-Tuple Bandit Evolutionary Algorithm (NTBEA), an optimisation algorithm developed for noisy and expensive discrete (combinatorial) optimisation problems.
no code implementations • 31 Aug 2017 • Jialin Liu, Cristina Garcia-Cardona, Brendt Wohlberg, Wotao Yin
Convolutional sparse representations are a form of sparse representation with a structured, translation invariant dictionary.
no code implementations • 7 Aug 2017 • Simon M. Lucas, Jialin Liu, Diego Pérez-Liébana
The compact genetic algorithm is an Estimation of Distribution Algorithm for binary optimisation problems.
no code implementations • 29 Jun 2017 • Jialin Liu, Cristina Garcia-Cardona, Brendt Wohlberg, Wotao Yin
While a number of different algorithms have recently been proposed for convolutional dictionary learning, this remains an expensive problem.
no code implementations • 13 Jun 2017 • Simon M. Lucas, Jialin Liu, Diego Pérez-Liébana
A frequently used stopping condition in runtime analysis, known as "First Hitting Time", is to stop the algorithm as soon as it encounters the optimal solution.
no code implementations • 24 Apr 2017 • Raluca D. Gaina, Jialin Liu, Simon M. Lucas, Diego Perez-Liebana
Monte Carlo Tree Search techniques have generally dominated General Video Game Playing, but recent research has started looking at Evolutionary Algorithms and their potential at matching Tree Search level of play or even outperforming these methods.
2 code implementations • 18 Mar 2017 • Kamolwan Kunanusont, Raluca D. Gaina, Jialin Liu, Diego Perez-Liebana, Simon M. Lucas
This paper describes a new evolutionary algorithm that is especially well suited to AI-Assisted Game Design.
no code implementations • 18 Mar 2017 • Jialin Liu, Julian Togelius, Diego Perez-Liebana, Simon M. Lucas
The space of possible parameter settings can be seen as a search space, and we can therefore use a Random Mutation Hill Climbing algorithm or other search methods to find the parameter settings that induce the best games.
no code implementations • 27 Jul 2016 • David L. St-Pierre, Jean-Baptiste Hoock, Jialin Liu, Fabien Teytaud, Olivier Teytaud
In addition, we consider the case in which only one GPP is available - by decomposing this single GPP into several ones through the use of parameters or even simply random seeds.
no code implementations • 22 Jul 2016 • Jialin Liu, Michael Fairbank, Diego Pérez-Liébana, Simon M. Lucas
The OneMax problem is a standard benchmark optimisation problem for a binary search space.
no code implementations • 8 Jul 2016 • Tristan Cazenave, Jialin Liu, Fabien Teytaud, Olivier Teytaud
Many artificial intelligences (AIs) are randomized.
no code implementations • 6 Jul 2016 • Jialin Liu, Diego Pérez-Liébana, Simon M. Lucas
To select an action the algorithm co-evolves two (or in the general case N) populations, one for each player, where each individual is a sequence of actions for the respective player.
1 code implementation • 5 Jul 2016 • Alex Gittens, Aditya Devarakonda, Evan Racah, Michael Ringenburg, Lisa Gerhardt, Jey Kottalam, Jialin Liu, Kristyn Maschhoff, Shane Canon, Jatin Chhugani, Pramod Sharma, Jiyan Yang, James Demmel, Jim Harrell, Venkat Krishnamurthy, Michael W. Mahoney, Prabhat
We explore the trade-offs of performing linear algebra using Apache Spark, compared to traditional C and MPI implementations on HPC platforms.
Distributed, Parallel, and Cluster Computing G.1.3; C.2.4
no code implementations • 20 Jun 2016 • Jialin Liu, Diego Peŕez-Liebana, Simon M. Lucas
The Random Mutation Hill-Climbing algorithm is a direct search technique mostly used in discrete domains.
no code implementations • 12 Nov 2015 • Mengdi Wang, Yi-Chen Chen, Jialin Liu, Yuantao Gu
Consider convex optimization problems subject to a large number of constraints.