Location extraction from tweets     

Thi Bich Ngoc Hoang  Josiane Mothe 《Information processing & management》2018,54(2):129-144

Five hundred million tweets are posted daily, making Twitter a major social media platform from which topical information on events can be extracted. These events are represented by three main dimensions: time, location and entity-related information. The focus of this paper is location, which is an essential dimension for geo-spatial applications, either when helping rescue operations during a disaster or when used for contextual recommendations. While the first type of application needs high recall, the second is more precision-oriented. This paper studies the recall/precision trade-off, combining different methods to extract locations. In the context of short posts, applying tools that have been developed for natural language is not sufficient given the nature of tweets which are generally too short to be linguistically correct. Also bearing in mind the high number of posts that need to be handled, we hypothesize that predicting whether a post contains a location or not could make the location extractors more focused and thus more effective. We introduce a model to predict whether a tweet contains a location or not and show that location prediction is a useful pre-processing step for location extraction. We define a number of new tweet features and we conduct an intensive evaluation. Our findings are that (1) combining existing location extraction tools is effective for precision-oriented or recall-oriented results, (2) enriching tweet representation is effective for predicting whether a tweet contains a location or not, (3) words appearing in a geography gazetteer and the occurrence of a preposition just before a proper noun are the two most important features for predicting the occurrence of a location in tweets, and (4) the accuracy of location extraction improves when it is possible to predict that there is a location in a tweet.  相似文献   

场域视野下高校图书馆发展社会学分析——以北京体育大学图书馆为例     

梁超梅  迟桂军 《山东体育科技》2020,(1):68-72

运用文献资料、专家访谈和逻辑分析等方法,以布迪厄场域理论为基础,以北京体育大学为例,对高校图书馆场域中行动者的资本和惯习等进行了详细分析。通过研究,得出以下结论,高校图书馆管理者的权力资本在高校图书馆场域中占据支配地位,管理者和工作人员技能资本的不足使高校图书馆的服务质量有待提升,作为经济资本持有者之一的大学生在师道尊严的惯习下知识学习和技能习得诉求未得到很好的满足。因此,高校图书馆要从弱化图书馆管理者的权力资本、构建新型的师生关系、提高图书馆管理者和工作人员的技能资本、激发大学生主观能动性的发挥等几个方面促进图书馆的建设与发展,真正体现“读者第一、服务至上”的图书馆管理理念,从而使高校图书馆真正成为学生知识学习、技能掌握、科研创新的第二课堂。  相似文献   

高校潜水专业可持续发展影响因素研究——以岭南师范学院为例     

黎明 《体育科技文献通报》2020,(1):158-160

在SWOT总体框架下运用德尔菲法和层次分析法等一些研究方法,去构建研究高校潜水可持续发展的体系,并确立其因素的权重。结果表明从SWOT分析方面去构建一级四个指标优势S、劣势W、机会O、威胁T,二级指标18个因素的体系是能够分析出哪个因素的权重更大,能给予一定的定量分析支持。其中一级指标的优势S是四个指标中最重要的一个因素,能给予决断层学术上的帮助。  相似文献   

What it means to be “one of us”: Discourses of national identity in the United States     

《Int J Intercult Relat》2020

In recent years, the transnational movement of people has resulted in increasing tension and debates about national identity. The present research utilized a discourse analytic approach to examine accounts of national identity in the U.S. among native-born U.S. residents, Mexicans living in Mexico, and Mexicans living in the U.S. Our analysis focused on two sets of diverging accounts of national identity. A first set involved participants' explanations of national identity as natural/essential, “felt”, or conditional, which served to either constrain how “American” immigrants could be or allowed for a more inclusive definition of national identity. A second set of accounts involved participants theorizing the national polity as a multicultural or monocultural space which functioned to construct national boundaries as permeable or reinforced (White) American dominance. These patterns of talk emerged across all interviews, although U.S. participants attended to more flexible and dilemmatic (e.g. inclusionary and exclusionary) accounts of national identity. We discuss the implications for the complexity of national identity.  相似文献   

Young children working together. Cooperative learning effects on group work of children in Grade 1 of primary education     

《Learning and Instruction》2020

It was examined whether cooperative learning within the Success for All (SfA) program led to improved group work behaviour of Grade 1 pupils. 168 pupils of six SfA schools and 144 pupils of four control schools participated. Positive and negative group work behaviour was observed during a group task, taking into account socioemotional ethos, group participation, and type of dialogue. Longitudinal multilevel analysis was used for the sequence of observed 20-s time intervals. SfA groups showed more positive and less negative group work behaviour compared to control groups, whilst controlling for several group characteristics. Results suggest that negative group work behaviour increased gradually during the whole task in control groups, while in SfA groups it increased only towards the end of the task. The findings indicate that cooperative learning may lead to improved group work behaviour of young pupils (6–7 years old).  相似文献   

海城尚氏宗谱文化探析     

王小梦 《齐齐哈尔师范高等专科学校学报》2014,(1):100-102

海城尚氏祭祖自清初至今已有三百余年。平南王尚可喜于晚年开始着手编著尚氏宗谱,定祖训,及至尚王逝世,宗祠、陵园逐渐修建,尚氏家族的祭祖仪式逐日发展完善。随着时代的发展,尚氏家祭仪式也有所损益,宗谱文化与社会更加契合融汇,具有了更为广泛的文化内涵。  相似文献   

当代大学生思想问题的解决策略——“思想分析”在辅导员工作中的应用     

刘先锐 《唐山师范学院学报》2014,(4):127-129

大学生心理问题和思想问题既相互区别又相互联系,高校辅导员对于两类性质各异的问题要采用不同的策略。大学生思想问题的分析和疏导可以采用“思想分析”的方法,思想分析继承和发展了马克思主义分析问题的思想方法,分析的过程也是开解思想“症结”的过程,“解惑、去苦”中运用的方法和技术有“宁静法”“四阶段法”“认知颖悟法”等。  相似文献   

SCERT在大型工程项目风险分析与管理中的应用研究   总被引：6，自引：0，他引：6  

王振强  刘玉杰  于九如 《中国软科学》2002,4(7):105-108

本文对大型工程项目风险管理的理论与方法进行了探讨与研究,首先系统阐述了SCERT(SynergisticContin-gencyEvaluationandResponseTechniques)的理论、方法和实现过程,然后,以SW水利工程为背景,对其枢纽工程的活动/风险/对策进行了研究,对其投资风险进行了估计和分析。  相似文献   

主题内容频数相关分析与历代书法理论演替关系研究     

张捷  饶薇  王小伦 《情报科学》2006,24(12):1822-1827

针对古代文献引用方式的特殊性和无法运用常规引文分析及关键词分析方法进行研究的现状，本文以主题内容为检索单元以朝代为时间单元进行频数统计研究，将贯穿中国历代传统书法理论（书论）中的大量自然意象描述主题内容分为21类，并以此为指标进行分朝代统计，进而采用线性回归方法计算不同朝代书论之间的相关性，并以此作为各朝书论之间的传承关系。论文同时利用文史考证材料对所揭示的传承现象进行了分析、验证和阐释。  相似文献   

当地知识在乡村发展规划中的应用——以西藏山南地区为例     

周伟  麻泽龙  曾云英 《资源科学》2006,28(1):37-42

当地人关于当地社会、经济、生态环境的知识对制定乡村发展规划影响重大。规划内容与当地知识体系能否兼容，决定了规划方案的成败。在西藏山南地区的小康示范村（县）规划中，通过访问、画图、野外调查和阅读地方志充分挖掘了当地知识；选用优势-劣势-机遇-风险分析矩阵（SWOT）评估当地知识，筛选出促进当地社会经济、生态环境发展的知识，将其融入规划方案。结果表明：①农牧区的当地知识具有感性强、双重性、传统性和发展滞后等特点，知识构成能反映当地社会经济、生态环境发展状况；②当地知识在乡村的基础设施建设、增收、人居环境美化、生态环境保护和社会发展规划中有积极的作用；③以当地知识为基础的乡村发展规划，经过规划人员、地方政府和农牧民的交流后，获得了农牧民的认可。  相似文献