In this paper, we are dealing with the study of the metric dimension of some classes of regular graphs by considering a class of bridgeless cubic graphs called the flower snarks Jn, a class of cubic convex polytopes c...In this paper, we are dealing with the study of the metric dimension of some classes of regular graphs by considering a class of bridgeless cubic graphs called the flower snarks Jn, a class of cubic convex polytopes considering the open problem raised in [M. Imran et al., families of plane graphs with constant metric dimension, Utilitas Math., in press] and finally Harary graphs H5,n by partially answering to an open problem proposed in Ⅱ. Javaid et al., Families of regular graphs with constant metric dimension, Utilitas Math., 2012, 88： 43-57]. We prove that these classes of regular graphs have constant metric dimension.展开更多
为解决花卉病虫害领域中病虫害防治因素关系复杂、知识冗余等问题,结合知识图谱对知识组织和管理的技术,提出一种基于知识图谱的花卉病虫害知识管理方法。首先,根据文献提取包括环境在内的花卉病虫害防治要素,构建花卉病虫害本体模型并...为解决花卉病虫害领域中病虫害防治因素关系复杂、知识冗余等问题,结合知识图谱对知识组织和管理的技术,提出一种基于知识图谱的花卉病虫害知识管理方法。首先,根据文献提取包括环境在内的花卉病虫害防治要素,构建花卉病虫害本体模型并存储在RDF图中,实现对知识规范性和完整性的控制;其次,对花卉病虫害领域文本进行分析,针对分析得到的文本特点,提出融合头尾实体分离“01”标注方法、轻量级双向转换编码表示模型(A lite BERT, ALBERT)和引入词性特征的级联标注模型(CasPOSRel)的抽取框架进行三元组抽取;之后利用自定义RDF2PG映射算法,按照RDF图中的本体模型将抽取到的三元组存入Neo4j数据库中,完成对花卉病虫害知识的存储及管理。实验结果证明提出的抽取框架中标注方法、预训练模型与抽取模型相比基线方法F1值分别提升0.88、4.90、8.57个百分点,同时得到抽取结果F1值为95.07%。通过知识发现表明该知识管理方法能有效组织管理病虫害知识,帮助花卉种植人员进行更为有效的病虫害防治工作。展开更多
基金supported by National University of Sceinces and Technology (NUST),Islamabadgrant of Higher Education Commission of Pakistan Ref.No:PMIPFP/HRD/HEC/2011/3386support of Slovak VEGA Grant 1/0130/12
文摘In this paper, we are dealing with the study of the metric dimension of some classes of regular graphs by considering a class of bridgeless cubic graphs called the flower snarks Jn, a class of cubic convex polytopes considering the open problem raised in [M. Imran et al., families of plane graphs with constant metric dimension, Utilitas Math., in press] and finally Harary graphs H5,n by partially answering to an open problem proposed in Ⅱ. Javaid et al., Families of regular graphs with constant metric dimension, Utilitas Math., 2012, 88： 43-57]. We prove that these classes of regular graphs have constant metric dimension.
文摘为解决花卉病虫害领域中病虫害防治因素关系复杂、知识冗余等问题,结合知识图谱对知识组织和管理的技术,提出一种基于知识图谱的花卉病虫害知识管理方法。首先,根据文献提取包括环境在内的花卉病虫害防治要素,构建花卉病虫害本体模型并存储在RDF图中,实现对知识规范性和完整性的控制;其次,对花卉病虫害领域文本进行分析,针对分析得到的文本特点,提出融合头尾实体分离“01”标注方法、轻量级双向转换编码表示模型(A lite BERT, ALBERT)和引入词性特征的级联标注模型(CasPOSRel)的抽取框架进行三元组抽取;之后利用自定义RDF2PG映射算法,按照RDF图中的本体模型将抽取到的三元组存入Neo4j数据库中,完成对花卉病虫害知识的存储及管理。实验结果证明提出的抽取框架中标注方法、预训练模型与抽取模型相比基线方法F1值分别提升0.88、4.90、8.57个百分点,同时得到抽取结果F1值为95.07%。通过知识发现表明该知识管理方法能有效组织管理病虫害知识,帮助花卉种植人员进行更为有效的病虫害防治工作。
基金Supported by NNSF of China (Grant No. 10271105) Foundation of Education Ministry of Fujian Province (Grant No. AJ03147) Foundation of Science and Technology Ministry of Fujian Province (Grant No. 2003J036)
