随着数据来源方式的多样化发展,多视图聚类成为研究热点。大多数算法过于专注利用图结构寻求一致表示,却忽视了如何学习图结构本身;此外,一些方法通常基于固定视图进行算法优化。为了解决这些问题,提出了一种基于相似图投影学习的多视...随着数据来源方式的多样化发展,多视图聚类成为研究热点。大多数算法过于专注利用图结构寻求一致表示,却忽视了如何学习图结构本身;此外,一些方法通常基于固定视图进行算法优化。为了解决这些问题,提出了一种基于相似图投影学习的多视图聚类算法(multi-view clustering based on similarity graph projection learning, MCSGP),通过利用投影图有效地融合了全局结构信息和局部潜在信息到一个共识图中,而不仅是追求每个视图与共识图的一致性。通过在共识图矩阵的图拉普拉斯矩阵上施加秩约束,该算法能够自然地将数据点划分到所需数量的簇中。在两个人工数据集和七个真实数据集的实验中,MCSGP算法在人工数据集上的聚类效果表现出色,同时在涉及21个指标的真实数据集中,有17个指标达到了最优水平,从而充分证明了该算法的优越性能。展开更多
A suitable comprehensive evaluation method for similarity comprehensive evaluation of humanoid motion(mainly to robotic arm) is proposed.For different robotic arms, a static comprehensive evaluation model is establish...A suitable comprehensive evaluation method for similarity comprehensive evaluation of humanoid motion(mainly to robotic arm) is proposed.For different robotic arms, a static comprehensive evaluation model is established by projection pursuit evaluation based on indexes of humanoid robot arm motion in robotics and ergonomics field. Based on projection pursuit evaluation with timing information entropy and time degrees, a dynamic comprehensive evaluation method is proposed by linear weighting to each time's static model's indexes weight according to timing weighted vectors. Through comparing similarity comprehensive evaluation result based on static and dynamic comprehensive evaluation model, the results show that similarity based on dynamic comprehensive evaluation model is high. By comparing reliability, similarity and dispersion of static and dynamic comprehensive evaluation models, the results show that dynamic comprehensive evaluation result has better accuracy, stability and lower dispersion, and the result is more reasonable and real. Therefore, the dynamic comprehensive evaluation method proposed in this paper is more suitable for similarity comprehensive evaluation of humanoid robot arm motion.展开更多
针对曲面场景中的异构无线传感器网络节点定位问题,提出了一种基于相似路径的节点定位算法(Node Localization Algorithm Based on Similar Paths,NLA-SP)。首先,依据Ochiai系数计算锚节点到未知节点的传播路径与各锚节点对间路径的相似...针对曲面场景中的异构无线传感器网络节点定位问题,提出了一种基于相似路径的节点定位算法(Node Localization Algorithm Based on Similar Paths,NLA-SP)。首先,依据Ochiai系数计算锚节点到未知节点的传播路径与各锚节点对间路径的相似值,找出相似路径;其次,根据相似路径对应的锚节点对距离与各单跳路径首节点的通信半径估算锚节点到未知节点的距离;然后,利用融合黄金正弦策略与粒子群优化算法的麻雀算法搜索未知节点的坐标;最后,为减小三维曲面Z轴的坐标误差采用坐标投影法对未知节点的坐标进行校正。仿真结果表明,所提算法较IDV-Hop算法、CPPA算法、HHOMA算法,定位精度明显提高。展开更多
基金The project supported in part by National Natural Science Foundation of China under Grant No. 10371098 and the Natural Science Foundation of Shaanxi Province of ChinaIt is my pleasure to thank Prof. Qu Chang-Zheng for his helpful discussion
文摘随着数据来源方式的多样化发展,多视图聚类成为研究热点。大多数算法过于专注利用图结构寻求一致表示,却忽视了如何学习图结构本身;此外,一些方法通常基于固定视图进行算法优化。为了解决这些问题,提出了一种基于相似图投影学习的多视图聚类算法(multi-view clustering based on similarity graph projection learning, MCSGP),通过利用投影图有效地融合了全局结构信息和局部潜在信息到一个共识图中,而不仅是追求每个视图与共识图的一致性。通过在共识图矩阵的图拉普拉斯矩阵上施加秩约束,该算法能够自然地将数据点划分到所需数量的簇中。在两个人工数据集和七个真实数据集的实验中,MCSGP算法在人工数据集上的聚类效果表现出色,同时在涉及21个指标的真实数据集中,有17个指标达到了最优水平,从而充分证明了该算法的优越性能。
基金Supported by the National Natural Science Foundation of China(51415016)
文摘A suitable comprehensive evaluation method for similarity comprehensive evaluation of humanoid motion(mainly to robotic arm) is proposed.For different robotic arms, a static comprehensive evaluation model is established by projection pursuit evaluation based on indexes of humanoid robot arm motion in robotics and ergonomics field. Based on projection pursuit evaluation with timing information entropy and time degrees, a dynamic comprehensive evaluation method is proposed by linear weighting to each time's static model's indexes weight according to timing weighted vectors. Through comparing similarity comprehensive evaluation result based on static and dynamic comprehensive evaluation model, the results show that similarity based on dynamic comprehensive evaluation model is high. By comparing reliability, similarity and dispersion of static and dynamic comprehensive evaluation models, the results show that dynamic comprehensive evaluation result has better accuracy, stability and lower dispersion, and the result is more reasonable and real. Therefore, the dynamic comprehensive evaluation method proposed in this paper is more suitable for similarity comprehensive evaluation of humanoid robot arm motion.
文摘针对曲面场景中的异构无线传感器网络节点定位问题,提出了一种基于相似路径的节点定位算法(Node Localization Algorithm Based on Similar Paths,NLA-SP)。首先,依据Ochiai系数计算锚节点到未知节点的传播路径与各锚节点对间路径的相似值,找出相似路径;其次,根据相似路径对应的锚节点对距离与各单跳路径首节点的通信半径估算锚节点到未知节点的距离;然后,利用融合黄金正弦策略与粒子群优化算法的麻雀算法搜索未知节点的坐标;最后,为减小三维曲面Z轴的坐标误差采用坐标投影法对未知节点的坐标进行校正。仿真结果表明,所提算法较IDV-Hop算法、CPPA算法、HHOMA算法,定位精度明显提高。