个性化信息服务通过了解用户的兴趣爱好,为不同的用户提供不同的信息服务。XML是一种标示语言,是Web文档表示和交换的常用相关标准,因此XML文档之间相似度计算问题对于个性化推荐与信息检索非常重要,为此提出了一个计算XML文档之间的语...个性化信息服务通过了解用户的兴趣爱好,为不同的用户提供不同的信息服务。XML是一种标示语言,是Web文档表示和交换的常用相关标准,因此XML文档之间相似度计算问题对于个性化推荐与信息检索非常重要,为此提出了一个计算XML文档之间的语义和结构相似度的方法 XMLSim。首先,基于节点标记对之间的语义相似度和编辑距离计算节点标记对之间的相似度;在分析了路径上节点具有的偏序关系之后,将路径之间相似度问题抽象为最大相似子序列(MSS,Maximal Similar Subsequence)问题,并利用动态规划对MSS问题求解得到路径相似度NpathSim。最后,XML文档之间的相似度XMLSim通过路径集合之间的最大NPathSim的平均值得到。展开更多
Markedness Theory is one of the most important theories in structural linguistics. Its academic significance has long attracted more scholars and linguists. This paper intends to explore markedness from both formal an...Markedness Theory is one of the most important theories in structural linguistics. Its academic significance has long attracted more scholars and linguists. This paper intends to explore markedness from both formal and semantic perspectives: formal markedness, distributional markedness, and semantic markedness. These three types of markedness are accounted for in detail from their definitions to their characteristics. Then the relationship of these three types of markedness is explicated. The ultimate aim of this paper is to give an insight to markedness phenomenon not only from linguistic form or structure, but from its semantic distinctions and pragmatic use. The study also aims to help foster the greater application of Markedness Theory to other linguistic fields' study展开更多
文摘个性化信息服务通过了解用户的兴趣爱好,为不同的用户提供不同的信息服务。XML是一种标示语言,是Web文档表示和交换的常用相关标准,因此XML文档之间相似度计算问题对于个性化推荐与信息检索非常重要,为此提出了一个计算XML文档之间的语义和结构相似度的方法 XMLSim。首先,基于节点标记对之间的语义相似度和编辑距离计算节点标记对之间的相似度;在分析了路径上节点具有的偏序关系之后,将路径之间相似度问题抽象为最大相似子序列(MSS,Maximal Similar Subsequence)问题,并利用动态规划对MSS问题求解得到路径相似度NpathSim。最后,XML文档之间的相似度XMLSim通过路径集合之间的最大NPathSim的平均值得到。
文摘Markedness Theory is one of the most important theories in structural linguistics. Its academic significance has long attracted more scholars and linguists. This paper intends to explore markedness from both formal and semantic perspectives: formal markedness, distributional markedness, and semantic markedness. These three types of markedness are accounted for in detail from their definitions to their characteristics. Then the relationship of these three types of markedness is explicated. The ultimate aim of this paper is to give an insight to markedness phenomenon not only from linguistic form or structure, but from its semantic distinctions and pragmatic use. The study also aims to help foster the greater application of Markedness Theory to other linguistic fields' study