Search Results for author: Hisao Ishibuchi

Found 36 papers, 10 papers with code

Data-Driven Preference Sampling for Pareto Front Learning

no code implementations12 Apr 2024 Rongguang Ye, Lei Chen, Weiduo Liao, Jinyuan Zhang, Hisao Ishibuchi

In this manner, the proposed method can sample preference vectors from the location of the Pareto front with a high probability.

Evolutionary Preference Sampling for Pareto Set Learning

2 code implementations12 Apr 2024 Rongguang Ye, Longcan Chen, Jinyuan Zhang, Hisao Ishibuchi

Recently, Pareto Set Learning (PSL) has been proposed for learning the entire Pareto set using a neural network.

Evolutionary Algorithms

Privacy-preserving Continual Federated Clustering via Adaptive Resonance Theory

1 code implementation7 Sep 2023 Naoki Masuyama, Yusuke Nojima, Yuichiro Toda, Chu Kiong Loo, Hisao Ishibuchi, Naoyuki Kubota

In the clustering domain, various algorithms with a federated learning framework (i. e., federated clustering) have been actively studied and showed high clustering performance while preserving data privacy.

Clustering Continual Learning +2

A Parameter-free Adaptive Resonance Theory-based Topological Clustering Algorithm Capable of Continual Learning

1 code implementation1 May 2023 Naoki Masuyama, Takanori Takebayashi, Yusuke Nojima, Chu Kiong Loo, Hisao Ishibuchi, Stefan Wermter

In general, a similarity threshold (i. e., a vigilance parameter) for a node learning process in Adaptive Resonance Theory (ART)-based algorithms has a significant impact on clustering performance.

Clustering Continual Learning

Effects of Archive Size on Computation Time and Solution Quality for Multi-Objective Optimization

1 code implementation7 Sep 2022 Tianye Shu, Ke Shang, Hisao Ishibuchi, Yang Nan

In this study, we examine the effects of the archive size on three aspects: (i) the quality of the selected final solution set, (ii) the total computation time for the archive maintenance and the final solution set selection, and (iii) the required memory size.

Hybridization of evolutionary algorithm and deep reinforcement learning for multi-objective orienteering optimization

no code implementations21 Jun 2022 Wei Liu, Rui Wang, Tao Zhang, Kaiwen Li, Wenhua Li, Hisao Ishibuchi

Multi-objective orienteering problems (MO-OPs) are classical multi-objective routing problems and have received a lot of attention in the past decades.

Problem Decomposition reinforcement-learning +1

Reference Vector Adaptation and Mating Selection Strategy via Adaptive Resonance Theory-based Clustering for Many-objective Optimization

no code implementations22 Apr 2022 Takato Kinoshita, Naoki Masuyama, Yiping Liu, Yusuke Nojima, Hisao Ishibuchi

Decomposition-based multiobjective evolutionary algorithms (MOEAs) with clustering-based reference vector adaptation show good optimization performance for many-objective optimization problems (MaOPs).

Clustering Evolutionary Algorithms

HV-Net: Hypervolume Approximation based on DeepSets

no code implementations4 Mar 2022 Ke Shang, WeiYu Chen, Weiduo Liao, Hisao Ishibuchi

In this letter, we propose HV-Net, a new method for hypervolume approximation in evolutionary multi-objective optimization.

Adaptive Resonance Theory-based Topological Clustering with a Divisive Hierarchical Structure Capable of Continual Learning

no code implementations26 Jan 2022 Naoki Masuyama, Narito Amako, Yuna Yamada, Yusuke Nojima, Hisao Ishibuchi

In addition, for improving information extraction performance, a divisive hierarchical clustering algorithm capable of continual learning is proposed by introducing a hierarchical structure to the proposed algorithm.

Clustering Continual Learning

Learning to Approximate: Auto Direction Vector Set Generation for Hypervolume Contribution Approximation

1 code implementation18 Jan 2022 Ke Shang, Tianye Shu, Hisao Ishibuchi

The learned direction vector set can then be used in the $R_2^{\text{HVC}}$ indicator to improve its approximation quality.

Benchmarking Subset Selection from Large Candidate Solution Sets in Evolutionary Multi-objective Optimization

1 code implementation18 Jan 2022 Ke Shang, Tianye Shu, Hisao Ishibuchi, Yang Nan, Lie Meng Pang

This paper aims to fill this research gap by proposing a benchmark test suite for subset selection from large candidate solution sets, and comparing some representative methods using the proposed test suite.

Benchmarking

Clustering-Based Subset Selection in Evolutionary Multiobjective Optimization

no code implementations19 Aug 2021 WeiYu Chen, Hisao Ishibuchi, Ke Shang

Subset selection is an important component in evolutionary multiobjective optimization (EMO) algorithms.

Clustering Multiobjective Optimization

On fine-tuning of Autoencoders for Fuzzy rule classifiers

no code implementations21 Jun 2021 Rahul Kumar Sevakula, Nishchal Kumar Verma, Hisao Ishibuchi

Recent discoveries in Deep Neural Networks are allowing researchers to tackle some very complex problems such as image classification and audio classification, with improved theoretical and empirical justifications.

Audio Classification Image Classification

Hypervolume-Optimal $μ$-Distributions on Line/Plane-based Pareto Fronts in Three Dimensions

no code implementations20 Apr 2021 Ke Shang, Hisao Ishibuchi, WeiYu Chen, Yang Nan, Weiduo Liao

Then, we show that a uniform solution set on the plane-based Pareto front is not always optimal for hypervolume maximization.

Multi-label Classification via Adaptive Resonance Theory-based Clustering

1 code implementation2 Mar 2021 Naoki Masuyama, Yusuke Nojima, Chu Kiong Loo, Hisao Ishibuchi

This paper proposes a multi-label classification algorithm capable of continual learning by applying an Adaptive Resonance Theory (ART)-based clustering algorithm and the Bayesian approach for label probability computation.

Classification Clustering +3

Fast Greedy Subset Selection from Large Candidate Solution Sets in Evolutionary Multi-objective Optimization

1 code implementation1 Feb 2021 WeiYu Chen, Hisao Ishibuchi, Ke Shang

Especially, in an EMO algorithm with an unbounded external archive, subset selection is an essential post-processing procedure to select a pre-specified number of solutions as the final result.

Niching Diversity Estimation for Multi-modal Multi-objective Optimization

no code implementations31 Jan 2021 Yiming Peng, Hisao Ishibuchi

Since equivalent solutions are overlapping (i. e., occupying the same position) in the objective space, standard diversity estimators such as crowding distance are likely to select one of them and discard the others, which may cause diversity loss in the decision space.

Evolutionary Multi-Objective Optimization Algorithm Framework with Three Solution Sets

no code implementations14 Dec 2020 Hisao Ishibuchi, Lie Meng Pang, Ke Shang

The three solution sets are the main population of an EMO algorithm, an external archive to store promising solutions, and a final solution set which is presented to the decision maker.

An Analysis of Control Parameters of MOEA/D Under Two Different Optimization Scenarios

no code implementations2 Oct 2020 Ryoji Tanabe, Hisao Ishibuchi

An unbounded external archive (UEA), which stores all nondominated solutions found during the search process, is frequently used to evaluate the performance of multi-objective evolutionary algorithms (MOEAs) in recent studies.

Benchmarking Evolutionary Algorithms

Review and Analysis of Three Components of Differential Evolution Mutation Operator in MOEA/D-DE

no code implementations1 Oct 2020 Ryoji Tanabe, Hisao Ishibuchi

To address this issue, we present a review of the existing configurations of the DE mutation operator in MOEA/D-DE and systematically examine the influence of each component on the performance of MOEA/D-DE.

A Niching Indicator-Based Multi-modal Many-objective Optimizer

no code implementations1 Oct 2020 Ryoji Tanabe, Hisao Ishibuchi

Results show that the proposed method can handle a large number of objectives and find a good approximation of multiple equivalent Pareto optimal solutions.

Evolutionary Algorithms

A Framework to Handle Multi-modal Multi-objective Optimization in Decomposition-based Evolutionary Algorithms

no code implementations30 Sep 2020 Ryoji Tanabe, Hisao Ishibuchi

The performance of improved versions of six decomposition-based evolutionary algorithms by our framework is evaluated on various test problems regarding the number of objectives, decision variables, and equivalent Pareto optimal solution sets.

Evolutionary Algorithms

Non-elitist Evolutionary Multi-objective Optimizers Revisited

no code implementations30 Sep 2020 Ryoji Tanabe, Hisao Ishibuchi

Since around 2000, it has been considered that elitist evolutionary multi-objective optimization algorithms (EMOAs) always outperform non-elitist EMOAs.

A Review of Evolutionary Multi-modal Multi-objective Optimization

no code implementations28 Sep 2020 Ryoji Tanabe, Hisao Ishibuchi

Multi-modal multi-objective optimization aims to find all Pareto optimal solutions including overlapping solutions in the objective space.

An Analysis of Quality Indicators Using Approximated Optimal Distributions in a Three-dimensional Objective Space

no code implementations27 Sep 2020 Ryoji Tanabe, Hisao Ishibuchi

One promising approach for understanding quality indicators is the use of the optimal distribution of objective vectors that optimizes each quality indicator.

Benchmarking

An Easy-to-use Real-world Multi-objective Optimization Problem Suite

1 code implementation27 Sep 2020 Ryoji Tanabe, Hisao Ishibuchi

Although synthetic test problems are widely used for the performance assessment of evolutionary multi-objective optimization algorithms, they are likely to include unrealistic properties which may lead to overestimation/underestimation.

Decomposition-Based Multi-Objective Evolutionary Algorithm Design under Two Algorithm Frameworks

no code implementations17 Aug 2020 Lie Meng Pang, Hisao Ishibuchi, Ke Shang

In the final population framework, the final population of an EMO algorithm is presented to the decision maker.

Vocal Bursts Valence Prediction

Algorithm Configurations of MOEA/D with an Unbounded External Archive

no code implementations27 Jul 2020 Lie Meng Pang, Hisao Ishibuchi, Ke Shang

In this framework, which is referred to as the solution selection framework, the final population does not have to be a good solution set.

Solution Subset Selection for Final Decision Making in Evolutionary Multi-Objective Optimization

no code implementations15 Jun 2020 Hisao Ishibuchi, Lie Meng Pang, Ke Shang

The selection of a single final solution from the obtained solutions is assumed to be done by a human decision maker.

Decision Making Evolutionary Algorithms

A Decomposition-based Large-scale Multi-modal Multi-objective Optimization Algorithm

no code implementations21 Apr 2020 Yiming Peng, Hisao Ishibuchi

With a clearing mechanism and a greedy removal strategy, our proposed algorithm can effectively preserve equivalent Pareto optimal solutions (i. e., different Pareto optimal solutions with same objective values).

Effects of Discretization of Decision and Objective Spaces on the Performance of Evolutionary Multiobjective Optimization Algorithms

no code implementations22 Mar 2020 Wei-Yu Chen, Hisao Ishibuchi, Ke Shang

In other studies, it is shown that the objective space discretization improves the performance on combinatorial multi-objective problems.

Multiobjective Optimization

R2-based Hypervolume Contribution Approximation

1 code implementation15 May 2018 Ke Shang, Hisao Ishibuchi, Xizi Ni

The basic idea of the proposed method is to use different line segments only in the hypervolume contribution region for the hypervolume contribution approximation.

Optimization and Control

Soft Computing Techniques for Dependable Cyber-Physical Systems

no code implementations25 Jan 2018 Muhammad Atif, Siddique Latif, Rizwan Ahmad, Adnan Khalid Kiani, Junaid Qadir, Adeel Baig, Hisao Ishibuchi, Waseem Abbas

Cyber-Physical Systems (CPS) allow us to manipulate objects in the physical world by providing a communication bridge between computation and actuation elements.

Evolutionary Multitasking for Multiobjective Continuous Optimization: Benchmark Problems, Performance Metrics and Baseline Results

no code implementations8 Jun 2017 Yuan Yuan, Yew-Soon Ong, Liang Feng, A. K. Qin, Abhishek Gupta, Bingshui Da, Qingfu Zhang, Kay Chen Tan, Yaochu Jin, Hisao Ishibuchi

In this report, we suggest nine test problems for multi-task multi-objective optimization (MTMOO), each of which consists of two multiobjective optimization tasks that need to be solved simultaneously.

Multiobjective Optimization

Transfer Prototype-based Fuzzy Clustering

no code implementations19 Sep 2014 Zhaohong Deng, Yizhang Jiang, Fu-Lai Chung, Hisao Ishibuchi, Kup-Sze Choi, Shitong Wang

Specifically, the idea of leveraging knowledge from the source domain is exploited to develop a set of transfer prototype based fuzzy clustering (TPFC) algorithms.

Clustering Transfer Learning

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