RDFS数据源的并行闭包生成算法(英文)

来源 :Journal of Southeast University(English Edition) | 被引量 : 0次 | 上传用户:itolbaxk
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
为了减少闭包的生成时间,提出了一种RDFS数据源闭包的并行生成算法.该算法基于RDFS推理规则生成闭包,根据三元组的形式对数据源中的RDFS三元组进行分类,缩小了特定形式三元组的直找范围;分析了各类三元组间的推理依赖关系,并按照每条推理规则所需的三元组将初始的数据源划分成多个子集,将子集导入各个并行的进程中,并应用RDFS推理规则并行地生成闭包.并行的闭包生成算法可以有效地减少运行时间以提高闭包生成的效率. In order to reduce the generation time of closures, a parallel algorithm of RDFS data source closures is proposed.The algorithm generates closures based on RDFS inference rules, classifies RDFS triplets in data sources according to the form of triples, Narrowing down the scope of the straightforward search for specific types of triples; analyzing the reasoning dependencies among the various types of triples and dividing the initial data source into subsets according to the triples required by each inference rule, Set is imported into all parallel processes, and the closure is generated in parallel by applying RDFS inference rules.Percental closure generation algorithm can effectively reduce the running time to improve the efficiency of closure generation.
其他文献
新疆生产建设兵团经过几十年的发展已形成了农业生产规模化、集约化、机械化集成度高,农业基础生产设施完善、现代农业机械设备先进等特点,具备了由传统农业向现代化农业转变
a-Si:H/SiO2 multilayers were prepared by alteatively changing plasma enhanced chemical vapour deposition of a-Si:H layers and in situ plasma oxidation process.
We present an efficient scheme for preparation of the multi-atom W state via cavity quantum electrodynamics.Involved in this scheme are n identical two-level at
中国电影产业快速发展,电影产业链因为互联网技术发展和全球化竞争现状发生变革,电影产业的快速变革带来很多新的电影人才需求,传统的电影人才培养模式已经不能满足当前中国
Based on group theory and atomic and molecular reaction statics, this paper derives the possible electronic states of C22+ , C22- and C23+, and their reasonable
特权辩护新闻单位享有对官方活动进行真实、公正报道的特权。这里所说的官方活动,不仅包括政府机构,而且还应把立法、司法及其它一些处理公共事务或由公职身份、官方名义进
In this paper, we investigate the modulation instability for generating femtosecond pulses in fibres with slowlydecreasing dispersion. Higher-order dispersion a
维生素C (Vitamin C,Vc)是植物自身合成的抗氧化剂,对植物的生长发育具有重要的生理功能。维生素C的缺乏也会严重影响人类的身体健康,但是人类和一些灵长类动物由于体内缺乏合成维生素C的最后一个酶,所以必须从膳食中获取。因此提高食物中的Vc含量和利用Vc增强作物抗逆能力的研究显得尤为重要。水稻是禾本科作物的重要模式植物,也是世界重要粮食作物之一;通过转基因的途径提高植物体内Vc含量,进而改善
By experimental observation we show that the plasma flow and heat transfer within a direct current (DC) non-transferred arc plasma torch always show appreciable
Atomic emission and cavity field spectra of the Jaynes-Cummings model are analytically compared. We show that the two spectra are in general different, except f