为进一步挖掘学术论文新颖性的丰富内涵,本文以组合创新理论为基础,开展了基于词汇功能的学术论文新颖性度量研究。以ACM(Association for Computing Machinery)Digital Library收录的论文为数据,提出了面向CS(computer science)领域进...为进一步挖掘学术论文新颖性的丰富内涵,本文以组合创新理论为基础,开展了基于词汇功能的学术论文新颖性度量研究。以ACM(Association for Computing Machinery)Digital Library收录的论文为数据,提出了面向CS(computer science)领域进一步预训练的词汇新颖性计算方法和基于语义相似度的问题-方法组合新颖度计算流程,分别计算了问题词、方法词、问题-方法组合和论文的语义新颖性,并将本文语义新颖性计算方法与已有的词频共现新颖性计算方法进行了对比。研究结果表明,ACM Digital Library收集的论文在研究方法和研究问题上创新度均较高,相较于已有的论文新颖性计算方法,本文提出的方法能从语义层面捕获更为精细的新颖性差异。展开更多
The routing protocol for low-power and lossy networks(RPL),standardized by Internet Engineering Task Force(IETF),is mainly designed to use for Low-power and Lossy Networks(LLNs).To solve the problems of several import...The routing protocol for low-power and lossy networks(RPL),standardized by Internet Engineering Task Force(IETF),is mainly designed to use for Low-power and Lossy Networks(LLNs).To solve the problems of several important routing metrics are not evaluated,the optimal path may contain long single hop links,lack of scientific multi-routing metrics evaluation method and mechanism to balance the parent child number(especially the parent with one hop away from root),this paper proposes an improved RPL algorithm for LLN(I-RPL).First of all,we propose the evaluated routing metrics:child number of parent,candidate parent number,hop count,ETX and energy consumption index.Meanwhile,we improve the path ETX calculation method to avoid selecting optimal path containing long single hop links.Then we design a novel lexical method to synthetically evaluate candidate parents.Meanwhile,based on the evaluation results of candidate parents,we design a novel objective function and a new calculation node rank method which can also be used for selecting the optimal path.Finally,evaluation results show that I-RPL outperforms ETXOF and several other improvements in terms of packet delivery ratio,latency,etc.展开更多
文摘为进一步挖掘学术论文新颖性的丰富内涵,本文以组合创新理论为基础,开展了基于词汇功能的学术论文新颖性度量研究。以ACM(Association for Computing Machinery)Digital Library收录的论文为数据,提出了面向CS(computer science)领域进一步预训练的词汇新颖性计算方法和基于语义相似度的问题-方法组合新颖度计算流程,分别计算了问题词、方法词、问题-方法组合和论文的语义新颖性,并将本文语义新颖性计算方法与已有的词频共现新颖性计算方法进行了对比。研究结果表明,ACM Digital Library收集的论文在研究方法和研究问题上创新度均较高,相较于已有的论文新颖性计算方法,本文提出的方法能从语义层面捕获更为精细的新颖性差异。
基金supported by Doctoral Research Project of Tianjin Normal University 52XB2101。
文摘The routing protocol for low-power and lossy networks(RPL),standardized by Internet Engineering Task Force(IETF),is mainly designed to use for Low-power and Lossy Networks(LLNs).To solve the problems of several important routing metrics are not evaluated,the optimal path may contain long single hop links,lack of scientific multi-routing metrics evaluation method and mechanism to balance the parent child number(especially the parent with one hop away from root),this paper proposes an improved RPL algorithm for LLN(I-RPL).First of all,we propose the evaluated routing metrics:child number of parent,candidate parent number,hop count,ETX and energy consumption index.Meanwhile,we improve the path ETX calculation method to avoid selecting optimal path containing long single hop links.Then we design a novel lexical method to synthetically evaluate candidate parents.Meanwhile,based on the evaluation results of candidate parents,we design a novel objective function and a new calculation node rank method which can also be used for selecting the optimal path.Finally,evaluation results show that I-RPL outperforms ETXOF and several other improvements in terms of packet delivery ratio,latency,etc.
