In order to solve the problem of modeling product configuration knowledge at the semantic level to successfully implement the mass customization strategy, an approach of ontology-based configuration knowledge modeling...In order to solve the problem of modeling product configuration knowledge at the semantic level to successfully implement the mass customization strategy, an approach of ontology-based configuration knowledge modeling, combining semantic web technologies, was proposed. A general configuration ontology was developed to provide a common concept structure for modeling configuration knowledge and rules of specific product domains. The OWL web ontology language and semantic web rule language （SWRL） were used to formally represent the configuration ontology, domain configuration knowledge and rules to enhance the consistency, maintainability and reusability of all the configuration knowledge. The configuration knowledge modeling of a customizable personal computer family shows that the approach can provide explicit, computerunderstandable knowledge semantics for specific product configuration domains and can efficiently support automatic configuration tasks of complex products.展开更多
电网灾害风险预警主要采用数据特征边缘分析得出风险预警结果,忽略了理论差值对预警准确度的影响,导致预警频次一致性低。为此,提出一种基于Web地理信息系统(geographic information system,GIS)技术的电网灾害风险预警模型构建方法。基...电网灾害风险预警主要采用数据特征边缘分析得出风险预警结果,忽略了理论差值对预警准确度的影响,导致预警频次一致性低。为此,提出一种基于Web地理信息系统(geographic information system,GIS)技术的电网灾害风险预警模型构建方法。基于WebGIS技术建立风险预警指标体系,分析灾害点距离作为原始特征,构建电网灾害风险预警模型,计算理论差值损失值优化模型参数,迭代输出模型结果,结合电网设备可靠度,定义风险预警等级,实现电网灾害风险预警。实验结果表明,所提模型方法表现出的预警频次一致性较高,预警结果准确度较高,满足了电网运维与灾害防护工作的现实需求。展开更多
Semantic web technologies have become a popular technique to apply meaning to unstructured data.They have been infrequently applied to problems within the agricultural domain when compared to complementary domains.Des...Semantic web technologies have become a popular technique to apply meaning to unstructured data.They have been infrequently applied to problems within the agricultural domain when compared to complementary domains.Despite this lack of application,agriculture has a large number of semantic resources that have been developed by large NGOs such as the Food and Agriculture Organization(FAO).This survey is intended to motivate further research in the application of semantic web technologies for agricultural problems,by making available a self contained reference that provides:a comprehensive review of preexisting semantic resources and their construction methods,data interchange standards,as well as a survey of the current applications of semantic web technologies.展开更多
基金The National Natural Science Foundation of China(No.70471023).
文摘In order to solve the problem of modeling product configuration knowledge at the semantic level to successfully implement the mass customization strategy, an approach of ontology-based configuration knowledge modeling, combining semantic web technologies, was proposed. A general configuration ontology was developed to provide a common concept structure for modeling configuration knowledge and rules of specific product domains. The OWL web ontology language and semantic web rule language （SWRL） were used to formally represent the configuration ontology, domain configuration knowledge and rules to enhance the consistency, maintainability and reusability of all the configuration knowledge. The configuration knowledge modeling of a customizable personal computer family shows that the approach can provide explicit, computerunderstandable knowledge semantics for specific product configuration domains and can efficiently support automatic configuration tasks of complex products.
文摘电网灾害风险预警主要采用数据特征边缘分析得出风险预警结果,忽略了理论差值对预警准确度的影响,导致预警频次一致性低。为此,提出一种基于Web地理信息系统(geographic information system,GIS)技术的电网灾害风险预警模型构建方法。基于WebGIS技术建立风险预警指标体系,分析灾害点距离作为原始特征,构建电网灾害风险预警模型,计算理论差值损失值优化模型参数,迭代输出模型结果,结合电网设备可靠度,定义风险预警等级,实现电网灾害风险预警。实验结果表明,所提模型方法表现出的预警频次一致性较高,预警结果准确度较高,满足了电网运维与灾害防护工作的现实需求。
基金The research in this review was supported by FAPESP grants number 16/15524-3,15/14228-9,and CNPq grant 302645/2015-2.The authors would also like to thank the anonymous referees for their advice and criticisms.
文摘Semantic web technologies have become a popular technique to apply meaning to unstructured data.They have been infrequently applied to problems within the agricultural domain when compared to complementary domains.Despite this lack of application,agriculture has a large number of semantic resources that have been developed by large NGOs such as the Food and Agriculture Organization(FAO).This survey is intended to motivate further research in the application of semantic web technologies for agricultural problems,by making available a self contained reference that provides:a comprehensive review of preexisting semantic resources and their construction methods,data interchange standards,as well as a survey of the current applications of semantic web technologies.
