Word sense disambiguation based on context selection using knowledge-based word similarity     

Sunjae Kwon  Dongsuk Oh  Youngjoong Ko 《Information processing & management》2021,58(4):102551

In this paper, we introduce a novel knowledge-based word-sense disambiguation (WSD) system. In particular, the main goal of our research is to find an effective way to filter out unnecessary information by using word similarity. For this, we adopt two methods in our WSD system. First, we propose a novel encoding method for word vector representation by considering the graphical semantic relationships from the lexical knowledge bases, and the word vector representation is utilized to determine the word similarity in our WSD system. Second, we present an effective method for extracting the contextual words from a text for analyzing an ambiguous word based on word similarity. The results demonstrate that the suggested methods significantly enhance the baseline WSD performance in all corpora. In particular, the performance on nouns is similar to those of the state-of-the-art knowledge-based WSD models, and the performance on verbs surpasses that of the existing knowledge-based WSD models.  相似文献   

Examining the reciprocal relations of mathematics anxiety to quantitative reasoning and number knowledge in Chinese children     

《Contemporary educational psychology》2020

This study aimed to examine the longitudinal relations of mathematics anxiety to quantitative reasoning and number knowledge in Chinese children. Three hundred and sixteen 6-year-old Chinese children in Hong Kong participated in two waves of assessments, eight months apart. Cross-lagged panel analyses showed that prior quantitative reasoning and number knowledge predicted lower mathematics anxiety, even after the effects of gender, mothers’ educational levels, and general anxiety were taken into account. However, earlier mathematics anxiety did not predict later quantitative reasoning and number knowledge. Our findings were consistent with the Deficit Theory, which postulates that mathematics anxiety comes from poor mathematical competence but not vice versa. We also found a reciprocal association between quantitative reasoning and number knowledge, in which initial quantitative reasoning had a stronger prediction on later number knowledge. Taken together with previous research, this result highlights the importance of quantitative reasoning in children’s mathematics learning and its role in mathematics education.  相似文献   

Why care about caring? Linking teachers’ caring and sense of meaning at work with students’ self-esteem,well-being,and school engagement     

《Teaching and Teacher Education》2020

Research on teacher-student relationships shows their impact on students. However, it typically focuses on teachers’ interactions and instruction, with less attention to motivations/feelings. Specifically, almost no quantitative research has focused on teachers’ caring for students, despite its potential importance. The present multilevel study, comprising 675 students in ages 15–17 and their 33 homeroom teachers, linked students’ feelings that their teacher cares for them with their self-esteem, well-being, and school engagement and indicated that teacher-student relationships quality mediates these links. Furthermore, students’ reports on teachers’ caring were associated with teachers’ sense of meaning at work, suggesting its role in enhancing caring.  相似文献   

优秀双向飞碟运动员3号 靶位击发节奏与脱靶关系研究     

耿正洋 《河北体育学院学报》2020,34(4):71-75

双向飞碟射击项目中3号靶位是8个靶位中射击命中难度最大的靶位，是制约运动员整体命中率的关键所在。将双向飞碟双靶分为1靶击发、随靶、2靶击发3个阶段，对3名国内优秀运动员击发节奏特征进行分析。发现：①1靶击发阶段的节奏直接影响2靶中靶情况，1靶击发用时越长，2靶质量越差，想要提高2靶的命中率必须要提高1靶的动作质量。②随靶阶段的人枪结合能力会影响2靶命中率。③优秀运动员2靶击发阶段的时间节奏一致性较强，动作自动化程度较高。④整体击发节奏慢更易造成2靶脱靶。提出，运动员要提高打好1靶的能力，在保证1靶质量的前提下加强快打技术训练，同时提高随靶阶段人枪结合能力，加强对技术的监控和分析，辅助运动训练，科学提高成绩。  相似文献   

基于语料库的动态词群建构     

冯文贺 《河南科技学院学报》2014,(9):47-50

提出一个以大规模语料库为资源提取材料,以词汇集为语义成分表达方式的动态词群建构方法,其维度特征值的提取不但具有客观性,而且操作简易。维度特征值用词汇集的方式表示特征取值范围,可以避免传统的义素概括性过强、词汇个性表现不足的缺陷。这种方法有利于面向应用的大规模动态词群的建构。  相似文献   

裸子植物的生化系统学(三)——从种子蛋白多肽和针叶过氧化物酶探讨红豆杉科的系统位置     

胡志昂  王洪新  刘长江  潜忠兴 《中国科学院研究生院学报》1986,24(4):260-263

 SDS聚丙烯酰胺凝胶电泳揭示红豆杉属和白豆杉的种子蛋白主要多肽的分子量为31、   22和20千道尔顿(K)。穗花杉的多肽谱与上述两属相差较大，没有22K多肽，代之以一个33K   主要多肽。榧树属和穗花杉有很多共同的多肽，但没有44K这个红豆杉科多数种类共有的中   等含量的多肽，并出现一个36K主要多肽。三尖杉属一些种的多肽谱十分接近红豆杉属，竹   柏的种子蛋白与上述分类群也有一定程度的近似。     红豆杉科各属之间针叶过氧化物酶谱差别很大，但三尖杉属一些种与红豆杉属却有些类   似。     两种蛋白质资料一致说明红豆杉科内的进化趋势是从红豆杉属、经白豆杉属和穗花杉属   至榧树属。红豆杉属和三尖杉属之间蛋白质的近似，说明红豆杉科和三尖杉科之间的关系，可 能通过红豆杉属相联系的,述资料也说明红豆杉科应置于松柏目之下。  相似文献   

中国企业技术创新主体地位确立——情境、内涵和政策     

孙玉涛  刘凤朝 《科学学研究》2016,34(11):1716-1724

本文从三个亟待厘清的理论命题出发,以企业技术创新主体问题的中国情境作为切入点,探讨中国在市场化和全球化进程中企业技术创新主体地位确立的理论内涵和政策机制。文章提出在市场化进程中,企业确立技术创新主体地位是创新体系围绕企业而不是政府运转;在全球化进程中,企业确立技术创新主体地位是本国企业成为全球价值创造和价值分配的主体;转变政府职能是企业技术创新主体地位确立的关键,在政策工具选择上要以完善市场环境和市场机制为主,减少对企业技术创新活动的直接干预。  相似文献   

迭代学习控制在伺服系统中的应用     

李丽娜  雷升印 《中国科技信息》2006,(4):24-25

介绍了迭代学习控制原理和技术方法，根据伺服系统的特点，以电液位置伺服系统为例，针对以往PID控制的不足提出将迭代学习控制方法应用在伺服系统中，并用Matlab做出仿真进行效果分析。  相似文献   

谈评论语言的使用技巧     

刘芳 《河北北方学院学报(社会科学版)》2006,22(4):21-22

评论文章常常是报刊的灵魂和旗帜，起着宣传和导向作用。正确掌握语言特点。能使文章锦上添花．增强宣传效果。语言风格符合作者身份，语言使用适应读者文化层次以及行文言语平和、文风活泼、文字洗练等是不断改进和提高评论文章水平的关键。  相似文献   

中国抗日战争在世界反法西斯战争中的地位和作用     

霍占茂 《黑龙江教育学院学报》2006,25(3):102-103

中国抗日战争是世界反法西斯战争的重要组成部分,中国是反法西斯战争的主战场,中国人民是打击日本帝国主义的主力军。中国抗日战争打破了日本帝国主义称霸世界的战略计划,有力地支援了世界反法西斯战争的其他战场。  相似文献