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排序方式: 共有261条查询结果,搜索用时 0 毫秒
191.
The rapid expansion of Big Data Analytics is forcing companies to rethink their Human Resource (HR) needs. However, at the same time, it is unclear which types of job roles and skills constitute this area. To this end, this study pursues to drive clarity across the heterogeneous nature of skills required in Big Data professions, by analyzing a large amount of real-world job posts published online. More precisely we: 1) identify four Big Data ‘job families’; 2) recognize nine homogeneous groups of Big Data skills (skill sets) that are being demanded by companies; 3) characterize each job family with the appropriate level of competence required within each Big Data skill set. We propose a novel, semi-automated, fully replicable, analytical methodology based on a combination of machine learning algorithms and expert judgement. Our analysis leverages a significant amount of online job posts, obtained through web scraping, to generate an intelligible classification of job roles and skill sets. The results can support business leaders and HR managers in establishing clear strategies for the acquisition and the development of the right skills needed to leverage Big Data at best. Moreover, the structured classification of job families and skill sets will help establish a common dictionary to be used by HR recruiters and education providers, so that supply and demand can more effectively meet in the job marketplace.  相似文献   
192.
专业搜索引擎的排序算法研究   总被引:5,自引:0,他引:5  
探讨影响搜索引擎排序的一般性因素:词频和词位置信息、用户行为信息、网页之间的链接信息等,在此基础上针对专业搜索引擎的排序算法,提出主题相关度并结合基础教育搜索引擎进行实验。实验结果表明,专业搜索引擎中主题相关度的适当应用能明显改善排序结果。  相似文献   
193.
提出一种基于句子相似度的信息抽取方法。采用句子主题相似度计算, 对测试语料进行小句主题识别;同时结合句子主题在整个文章中的概率分布特点,提高识别的准确性。以网络上个人信息资源为语料,在该系统上进行测试, 取得较好效果。  相似文献   
194.
韦冬莉  李倩  马赛 《大众科技》2014,(5):152-154
"2+3"五年制高职物流管理专业学生在升入高职院校后,存在难以融入集体、专业课程重复、学习积极性不高等问题,"课题·小组"教学法的应用提高了"2+3"五年制高职物流管理专业学生的学习兴趣,教学效果良好,文章对该教学法在实施过程中的若干问题进行了探讨。  相似文献   
195.
基于“Topic”的语义信息组织与图书馆学的经典Subject理论密不可分,可将其视为较为抽象化的Subject理论在语义Web环境下的一种“演化”和实用化的主题技术。文章首先解读Subject和Topic的概念,并概述两种基于Topic的国际标准技术,即TopicMaps和DITA;其次,简要描述TopicMaps的技术和应用,并重点介绍在图书馆界鲜为人知的DITA技术及其应用;再次,对基于“Topic”的语义信息组织方法予以总结。  相似文献   
196.
A stepfamily often faces unique challenges that can influence the strength of its bonds. One way in which stepfamily members adapt to these challenges is through communication. This study investigates adolescents’ and young adults’ use of topic avoidance in stepfamilies and its association with satisfaction and the parenting style of the stepparent. The results revealed that the more satisfied the participants were with their mother, father, stepmother, stepfather, and stepfamily overall, the less avoidance they were likely to employ. The findings also showed that more authoritarian stepparenting tended to increase the amount of avoidance, whereas more permissiveness and authoritativeness decreased it. Authoritativeness and authoritarianism were more strongly associated than permissiveness with participants’ avoidance. Perceptions of authoritarian stepparenting were also negatively associated with participants’ satisfaction with their stepparent. Finally, low or high degrees of persmissiveness were associated with low levels of satisfaction, but moderate degrees of permissive stepparenting were associated with moderate degrees of satisfaction with one's stepfamily.  相似文献   
197.
This study explores variations in the reasons people engage in avoidance as a support strategy across the two cultures of the United States and China. An avoidance-support belief scale was developed. Exploratory factor analysis of responses from 231 Americans and 219 Chinese identified three dimensions of the scale: (1) protecting the support seeker from harm by avoiding, (2) maintaining a positive mood by avoiding, and (3) spiritual/philosophical reasons for avoiding. Follow-up analyses revealed that Chinese scored significantly and substantially higher than Americans for all three avoidance support dimensions. Implications and future research directions are discussed.  相似文献   
198.
Key to understanding the process of privacy management is examining how boundary turbulence is individually experienced. Building on the principles of communication privacy management, I considered how the amount of dissemination beyond the dyadic boundary corresponds to the automatic emotional reactions, behavioral responses, and higher-order cognitions reported in response to boundary turbulence. Two hundred sixteen college-aged students described recent privacy breaches and reported their individual emotional, behavioral, and cognitive responses to the betrayal of confidence. Results revealed that the amount of dissemination of private information was positively associated with anger, fear, and sadness. Furthermore, anger incited the use of distributive tactics, and this association was stronger for individuals who ruminated. Congruently, sadness prompted withdrawal behaviors, and this relationship increased as cognitive avoidance increased.  相似文献   
199.
基于主题地图的语文教育信息资源组织方法研究   总被引:1,自引:0,他引:1  
在数字化教育领域,如何组织信息资源并改善其可用性是一个非常关键的问题.本文借助主题地图的知识表示方法,提出了一种有效组织管理语文教育信息资源的手段,并通过具体实例对这一方法进行了描述.  相似文献   
200.
汉语话题主位结构与英语主语主位结构在线性顺序上既可能是相互对应 ,也可能存在着差异。为了强调句子中某个主要信息、表达出某种特定的主题意义、取得不同的交际效果 ,在汉英互译时 ,要注意这两种结构语序一致或语序发生变化时所产生的语义差异 ,根据原文的文体风格、翻译目的、翻译对象作出更适当的选择 ,力求做到既忠实于原文 ,又符合译语的表达习惯。  相似文献   
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