系统功能语言学与关联理论的互补性     

晏刚 《玉溪师范学院学报》2006,22(2):38-40

关联理论可以极好地弥补系统功能语法的不足,解决会话中的含义识解问题。尤其是二者语境观的相互借鉴及有机结合对我们解释语用、翻译、二语习得等方面的问题都大有裨益。  相似文献   

Hierarchical clustering of a Finnish newspaper article collection with graded relevance assessments     

Tuomo Korenius  Jorma Laurikkala  Martti Juhola  Kalervo Järvelin 《Information Retrieval》2006,9(1):33-53

Search facilitated with agglomerative hierarchical clustering methods was studied in a collection of Finnish newspaper articles (N = 53,893). To allow quick experiments, clustering was applied to a sample (N = 5,000) that was reduced with principal components analysis. The dendrograms were heuristically cut to find an optimal partition, whose clusters were compared with each of the 30 queries to retrieve the best-matching cluster. The four-level relevance assessment was collapsed into a binary one by (A) considering all the relevant and (B) only the highly relevant documents relevant, respectively. Single linkage (SL) was the worst method. It created many tiny clusters, and, consequently, searches enabled with it had high precision and low recall. The complete linkage (CL), average linkage (AL), and Ward's methods (WM) returned reasonably-sized clusters typically of 18–32 documents. Their recall (A: 27–52%, B: 50–82%) and precision (A: 83–90%, B: 18–21%) was higher than and comparable to those of the SL clusters, respectively. The AL and WM clustering had 1–8% better effectiveness than nearest neighbor searching (NN), and SL and CL were 1–9% less efficient that NN. However, the differences were statistically insignificant. When evaluated with the liberal assessment A, the results suggest that the AL and WM clustering offer better retrieval ability than NN. Assessment B renders the AL and WM clustering better than NN, when recall is considered more important than precision. The results imply that collections in the highly inflectional and agglutinative languages, such as Finnish, may be clustered as the collections in English, provided that documents are appropriately preprocessed.  相似文献   

信息检索中的相关性研究   总被引：6，自引：1，他引：6  

成颖  孙建军 《情报学报》2004,23(6):689-696

本文系统地阐述了国外信息检索中的相关性研究 ,具体的论述按照三个阶段展开 ,分别是 195 8年之前的第一阶段 ,195 8— 1976年的第二阶段以及 1976年之后的第三阶段 ;其中每一阶段的阐述又被分为理论与实证两部分  相似文献   

情报检索系统用户相关性判断的灰色聚类决策   总被引：2，自引：0，他引：2  

王筠 《中国图书馆学报》2004,30(1)

所谓灰色聚类决策,就是按多个不同的决策指标对决策对象进行综合评价,以确定决策对象是否满足给定的取舍原则。该方法可以用于对情报检索系统的检索结果进行相关性判断。参考文献4。  相似文献   

Performing under pressure: Exploring the psychological state underlying clutch performance in sport     

Christian Swann  Lee Crust  Patricia Jackman  Stewart A. Vella  Mark S. Allen  Richard Keegan 《Journal of sports sciences》2017,35(23):2272-2280

Clutch performance is improved performance under pressure. However, little research has examined the psychological state experienced by athletes in these situations. Therefore, this study qualitatively examined the subjective experience underlying clutch performance across a range of sports (e.g., team, individual) and standards (Olympic to recreational athletes). Sixteen athletes (M_age = 27.08 years; SD = 6.48) took part in in-depth, semi-structured interviews primarily after an exceptional performance (M = 4.38 days later; SD = 3.14). Data were analysed inductively and thematically. Clutch states involved 12 characteristics, including heightened and deliberate concentration, intense effort, and heightened awareness, which distinguished the experience of clutch from other optimal psychological states such as flow. Other characteristics, such as perceptions of control, were also reported and supported previous experimental research on clutch. These findings present in-depth qualitative insights into the psychological state underlying clutch performance, and are discussed in relation to the existing literature on optimal psychological states in sport.  相似文献   

关联理论视角下汉语言语礼貌的解读——以莫言的小说《蛙》为例     

莫优媚 《佳木斯教育学院学报》2015,(5)

关联理论认为交际过程是一个明示-推理过程,但从听话人的角度来看,交际中的关联实际只是一个推理的过程。听话人的推理过程往往受到个人因素的影响,本文以莫言的长篇小说《蛙》为语料,分别从四个因素:先存经验的不同、对语境的不同评价、意向的动态变化性以及个体不同的凸显方法来分析汉语言语礼貌的理解机制。  相似文献   

基于GIS的横断山区地形起伏度与人口和经济的关系   总被引：1，自引：0，他引：1  

陈田田  彭立  刘邵权  王旭熙  徐定德 《中国科学院大学学报》2016,33(4):505-512

地形起伏度是影响山区人口分布和经济发展的关键因素。以横断山区大尺度ASTER GDEM为数据源，基于GIS的窗口递增分析原理，采用均值变点法科学分析平均地形起伏度的最佳统计面积并对其进行分级和相关性分析，得出实验区最佳分析窗口面积为0。202 5 km²，省域之间地形起伏度差异明显，省内差异不明显，相关性较高。同时，采用空间分析技术、统计学方法以及PCA排序法，分析地形起伏度与人口、经济的关系。研究结果表明：随着地形起伏度的增大，人口密度逐渐降低，当达到3。7以后人口密度趋于一个固定值；地形起伏度与第三产业占GDP比重的负相关性最大，与城镇化率的负相关性较小，与人均GDP的负相关性最小。  相似文献   

安徽农村经济发展水平的灰色关联分析     

邹颖 《安徽教育学院学报》2007,25(6):10-14

依据相关的文献,建立了一套指标体系,以因子分析法确定指标的权重,运用灰色关联分析进行综合评价。从地理位置的差异上对安徽省农村各地区的社会经济发展水平进行定量研究。  相似文献   

太阳能空间斯特林热机性能的优化分析   总被引：1，自引：0，他引：1  

林比宏 《泉州师范学院学报》2002,20(4):17-21

建立太阳能驱动的空间斯特林热机的循环模型，应用有限时间热力学理论和太阳能集热器的辐射损失模型，研究受热阻和回热损失影响的太阳能斯特林热机循环性能，导出空间热机效率的基本优化关系，确定太阳能集热器的最佳工作温度和效率界限，讨论各种不可逆性对空间热机性能的影响，所得结论可为太阳能空间斯特林热机的优化设计提供新的理论指导。  相似文献   

论实施混合教学模式的必要性和现实性     

李高祥 《现代远程教育研究》2006,(1):20-23

教学过程信息化改革是教育信息化的核心构成,高校扩招引发的新问题新挑战使这一改革更形迫切。整合了传统教学模式和网络教学模式的整体优势的″双轨″式教学模式,成为稳步推进教学信息化进程中一个具有现实性和必要性的选择与过程。  相似文献