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Diversity study of multi-objective genetic algorithm based on Shannon entropy 基于Shannon熵的多目标遗传算法的多样性研究
Pub Date : 2014-10-16 DOI: 10.1109/NaBIC.2014.6921898
E. Pires, J. Machado, P. Oliveira
Multi-objective optimization inspired on genetic algorithms are population based search methods. The population elements, chromosomes, evolve using inheritance, mutation, selection and crossover mechanisms. The aim of these algorithms is to obtain a representative non-dominated Pareto front from a given problem. Several approaches to study the convergence and performance of algorithm variants have been proposed, particularly by accessing the final population. In this work, a novel approach by analyzing multi-objective algorithm dynamics during the algorithm execution is considered. The results indicate that Shannon entropy can be used as an algorithm indicator of diversity and convergence.
多目标优化是受遗传算法启发的基于种群的搜索方法。种群元素,染色体,通过遗传、突变、选择和交叉机制进化。这些算法的目的是从给定问题中获得具有代表性的非支配Pareto前沿。已经提出了几种研究算法变体的收敛性和性能的方法,特别是通过访问最终总体。本文提出了一种分析算法执行过程中多目标动态特性的新方法。结果表明,Shannon熵可以作为算法多样性和收敛性的指标。
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引用次数: 2
Ant-based clustering of visual-words for unsupervised human action recognition 基于蚁群的视觉词聚类在无监督人类行为识别中的应用
Pub Date : 2010-12-01 DOI: 10.1109/NABIC.2010.5716377
Wang Kejun
Ant-based clustering is a biologically-inspired computational heuristic that has been used in various domains for general clustering tasks. In this paper we propose its use as the tool for clustering high-dimensional vectors (visual words) which are descriptive features for human actions extracted from video sequences. This codebook generation stage is critical in the popular ‘Bag-of-Words’ framework in which a visual codebook is constructed on the statistics of various features in images or videos. K-means algorithm is widely used in this process but this has two major shortcomings namely: it requires user specification of input parameter k which can bias the algorithm and make it converge at a sub-optimal number of clusters. Also, optimal value of k needs to be determined empirically. Our method generates a codebook of highly descriptive spatio-temporal ‘words’ using ant-based clustering to determine the optimal number of clusters in the dataset. The number of clusters generated was set as the number of codewords for the vocabulary. The limitations of k-means were overcome with the robustness of ant-based clustering heuristic. This idea when applied to the benchmark KTH database produced codewords that produced a compact representation of human actions which gave the desired recognition result when compared to similar approach based on k-means clustering.
基于蚁群的聚类是一种受生物学启发的计算启发式算法,已被用于各种领域的一般聚类任务。在本文中,我们提出了将其用作聚类工具的高维向量(视觉词),这些向量是从视频序列中提取的人类行为的描述性特征。这个码本生成阶段在流行的“词袋”框架中是至关重要的,在这个框架中,视觉码本是基于图像或视频中各种特征的统计而构建的。k -means算法在此过程中被广泛使用,但它有两个主要缺点,即:它需要用户指定输入参数k,这可能会使算法产生偏差,并使其收敛于次优数量的聚类。同时,k的最优值需要经验确定。我们的方法使用基于蚁群的聚类来生成一个高度描述性时空“词”的码本,以确定数据集中的最佳聚类数量。生成的簇数被设置为词汇表的码字数。该算法的鲁棒性克服了k-means算法的局限性。当将这个想法应用到基准KTH数据库时,产生的码字产生了人类行为的紧凑表示,与基于k-means聚类的类似方法相比,它提供了所需的识别结果。
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引用次数: 4
A Pre-microRNA Classifier by Structural and Thermodynamic Motifs 基于结构和热力学基序的Pre-microRNA分类器
Pub Date : 2009-12-01 DOI: 10.1109/NABIC.2009.5393604
Vinod S. S. Chandra, Reshmi Girijadevi
MicroRNAs (miRNAs) have been found in diverse organisms and play critical role in gene expression regulations of many essential cellular processes. Discovery of miRNAs and identification of their target genes are fundamental to the study of such regulatory circuits. To distinguish the real pre-miRNA from other stem loop hairpins with similar stem loop (pseudo pre-miRNA) is an important task in molecular biology. From the analysis of experimentally proved pre-miRNAs, we identified 17 parameters for miRNA formation. These parameters are grouped into two categories: structural and thermodynamic properties of the pre-miRNAs. A set of feature vector was formed from the pre-miRNA-like hairpins of human, mouse and rat. A feed forward multi layer perceptron Artificial Neural Network (ANN) classifier is trained by these feature vectors. This classifier is an application program, that decide whether a given sequence is a pre-miRNA like hairpin sequence or not. If the sequence is a pre-miRNA like hairpin, then the ANN classifier will predict whether it is a real pre-miRNA or a pseudo premiRNA. The approach can classify correctly the precursors of Human Mouse and Rat, with an average sensitivity of 97.40% and specificity of 95.85%. When compared with previous approaches, MiPred, mR-abela, ProMiR and Triplet SVM classifier, current approach was greater in total accuracy.
MicroRNAs (miRNAs)在多种生物体中被发现,在许多重要细胞过程的基因表达调控中起着关键作用。mirna的发现及其靶基因的鉴定是研究此类调控回路的基础。区分真正的pre-miRNA与其他具有相似茎环的茎环发夹(伪pre-miRNA)是分子生物学中的一项重要任务。通过对实验证明的pre-miRNA的分析,我们确定了17个miRNA形成的参数。这些参数分为两类:pre- mirna的结构和热力学性质。将人、小鼠和大鼠的pre- mirna样发夹形成一组特征向量。利用这些特征向量训练出前馈多层感知器人工神经网络(ANN)分类器。该分类器是一个应用程序,用于判断给定序列是否为像发夹序列一样的pre-miRNA。如果序列是类似发夹的pre-miRNA,那么ANN分类器将预测它是真正的pre-miRNA还是伪premiRNA。该方法对人类小鼠和大鼠的前体细胞分类正确,平均灵敏度为97.40%,特异性为95.85%。与先前的MiPred、mR-abela、ProMiR和Triplet SVM分类器相比,本方法的总准确率更高。
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引用次数: 11
Real-Time Vehicle Emission Monitoring and Location Tracking Framework 实时车辆排放监测和位置跟踪框架
Pub Date : 1900-01-01 DOI: 10.1007/978-3-319-27400-3_19
E. Abera, Ayalew Belay Habtie, A. Abraham
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引用次数: 1
A Neural Network Model for Road Traffic Flow Estimation 道路交通流估计的神经网络模型
Pub Date : 1900-01-01 DOI: 10.1007/978-3-319-27400-3_27
Ayalew Belay Habtie, A. Abraham, Dida Midekso
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引用次数: 6
Applying Design Science Research to Design and Evaluate Real-Time Road Traffic State Estimation Framework 应用设计科学研究设计与评价实时道路交通状态估计框架
Pub Date : 1900-01-01 DOI: 10.1007/978-3-319-27400-3_20
Ayalew Belay Habtie, A. Abraham, Dida Midekso
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引用次数: 0
Identification of Pathogenic Viruses Using Genomic Cepstral Coefficients with Radial Basis Function Neural Network 基于径向基函数神经网络的基因组倒谱系数鉴定病原病毒
Pub Date : 1900-01-01 DOI: 10.1007/978-3-319-27400-3_25
E. Adetiba, O. Olugbara, Tunmike B. Taiwo
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引用次数: 15
A Hyper-Heuristic Approach to Solving the Ski-Lodge Problem 解决滑雪小屋问题的超启发式方法
Pub Date : 1900-01-01 DOI: 10.1007/978-3-319-27400-3_18
Ahmed Hassan, N. Pillay
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引用次数: 0
Evolving Heuristic Based Game Playing Strategies for Checkers Incorporating Reinforcement Learning 结合强化学习的基于启发式进化的跳棋博弈策略
Pub Date : 1900-01-01 DOI: 10.1007/978-3-319-27400-3_15
Clive Frankland, N. Pillay
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引用次数: 0
Updating the Global Best and Archive Solutions of the Dynamic Vector-Evaluated PSO Algorithm Using epsilon ϵ -dominance 利用ε -支配更新动态向量评估PSO算法的全局最佳解和存档解
Pub Date : 1900-01-01 DOI: 10.1007/978-3-319-27400-3_35
Mardé Helbig
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引用次数: 0
期刊
World Congress on Nature and Biologically Inspired Computing
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