多目标回归旨在使用一组共同的输入变量来预测多个连续变量,其现有方法可归类为问题转换法和算法适应法.它的主要挑战在于如何对输入与输出空间的复杂关系进行建模,以及如何有效利用目标间的相关性.然而,现有的问题转换法很少同时考虑...多目标回归旨在使用一组共同的输入变量来预测多个连续变量,其现有方法可归类为问题转换法和算法适应法.它的主要挑战在于如何对输入与输出空间的复杂关系进行建模,以及如何有效利用目标间的相关性.然而,现有的问题转换法很少同时考虑到这两方面.基于此,本文构建了一种问题转换法同时应对这两大挑战,提出了一种结合目标特定特征和目标相关性的多目标回归方法(Multi-Target Regression via Specific Features and Inter-Target Correlations,TSF-TC).TSF-TC通过对分箱后的样本进行聚类分析构建目标特定特征从而对输入与输出空间的复杂关系进行建模,通过有选择性地堆叠单目标预测值揭示目标间的相关性.本文使用TSF-TC在18个多目标回归数据集上与现有多目标回归方法进行了对比实验,实验结果充分表明了TSF-TC的优势.展开更多
Classes are the basic modules in Object-Oriented (OO) software, which consist of attributes and methods. Thus, in OO environment, the cohesion is mainly about how tightly the attributes and methods of classes cohere w...Classes are the basic modules in Object-Oriented (OO) software, which consist of attributes and methods. Thus, in OO environment, the cohesion is mainly about how tightly the attributes and methods of classes cohere with each other. This letter discusses the relationships between attributes and attributes, attributes and methods, methods and methods of a class,and the properties of these relationships. Based on these properties, the letter proposes a new framework to measure the cohesion of a class. The approach overcomes the limitations of previous class cohesion measures, which consider only one or two of the three relationships in a class.展开更多
文摘多目标回归旨在使用一组共同的输入变量来预测多个连续变量,其现有方法可归类为问题转换法和算法适应法.它的主要挑战在于如何对输入与输出空间的复杂关系进行建模,以及如何有效利用目标间的相关性.然而,现有的问题转换法很少同时考虑到这两方面.基于此,本文构建了一种问题转换法同时应对这两大挑战,提出了一种结合目标特定特征和目标相关性的多目标回归方法(Multi-Target Regression via Specific Features and Inter-Target Correlations,TSF-TC).TSF-TC通过对分箱后的样本进行聚类分析构建目标特定特征从而对输入与输出空间的复杂关系进行建模,通过有选择性地堆叠单目标预测值揭示目标间的相关性.本文使用TSF-TC在18个多目标回归数据集上与现有多目标回归方法进行了对比实验,实验结果充分表明了TSF-TC的优势.
基金Supported in part by the National Natural Science Foundation of China(NSFC)(No.60073012),Natural Science Foundation of Jiangsu (BK2001004).
文摘Classes are the basic modules in Object-Oriented (OO) software, which consist of attributes and methods. Thus, in OO environment, the cohesion is mainly about how tightly the attributes and methods of classes cohere with each other. This letter discusses the relationships between attributes and attributes, attributes and methods, methods and methods of a class,and the properties of these relationships. Based on these properties, the letter proposes a new framework to measure the cohesion of a class. The approach overcomes the limitations of previous class cohesion measures, which consider only one or two of the three relationships in a class.