大数据背景下基于社交网络的聚类随机游走抽样算法研究

数字经济时代,社交网络作为数字化平台经济的重要载体,受到了国内外学者的广泛关注。大数据背景下,社交网络的商业应用价值巨大,但由于其网络规模空前庞大,传统的网络分析方法 因计算成本过高而不再适用。而通过网络抽样算法获取样本网络,再推断整体网络,可节约计算资源, 因此抽样算法的好坏将直接影响社交网络分析结论的准确性。现有社交网络抽样算法存在忽略网络内部拓扑结构、容易陷入局部网络、抽样效率过低等缺陷。为了弥补现有社交网络抽样算法的缺陷,本文结合大数据社交网络的社区特征,提出了一种聚类随机游走抽样算法。该方法首先使用社区聚类算法将原始网络节点进行社区划分,得到多个社区网络,然后分别对每个社区进行随机游走抽样获取样本网 络。数值模拟和案例应用的结果均表明,聚类随机游走抽样算法克服了传统网络抽样算法的缺点,能够在降低网络规模的同时较好地保留原始网络的结构特征。此外,该抽样算法还可以并行运算,有效提升抽样效率,对于大数据背景下大规模社交网络的抽样实践具有重大现实意义。     

论文化链接下的语言研究

“文化——语言”研究是一种立足于语言学而又导入了文化因素的语言研究方式,故称为文化链接下的语言研究。本文分析了这种语言研究方式的类型及主要研究方法,并且在对以往的“文化——语言”研究进行评价的基础上,提出对这项研究的深层思考。     

英语四、六级作文问题浅析及解决策略

写作在大学英语四六级考试中越来越重要,而大学生普遍成绩不高。本文作者根据多年的实际教学经验对大学生写作当中存在的问题进行分析并提出解决办法,以帮助大学生提高写作技巧,取得更好的成绩。     

A sociolinguistic application of Bakhtin's authoritative and internally persuasive discourse

Through the use of two central Bakhtinian concepts, authoritative and internally persuasive discourse (word), this paper examines the tension between the ideology of linguistic hegemony as a source of power in the Greek public sphere and the condition of language shift faced by the Albanian‐speaking communities of modern Greece. I argue here that a cautious application of these two notions, which are relevant to linguistic ideology, can reveal crucial aspects of two processes: that of subordination to and that of questioning of the dominant linguistic ideology by local Albanian‐speaking communities. Thus, in language shift contexts, it is possible that no simple relations obtain that place social agents in unquestionable and easily predictable positions. Such an approach proves useful for the sociolinguistic study of threatened language communities.     

从杜夫海纳的困境中突围——《审美经验现象学》中的文学作品理论

作为现象学美学经典文本的《审美经验现象学》对审美活动进行了深入的剖析,但令人遗憾的是,杜夫海纳在该书中却回避了对同为艺术作品的文学作品的分析,这种回避源自杜夫海纳对于语言优先性的坚持。如果从语言的陈述性入手,或许可以为文学理论的构建提供一个新的思路。     

How culture influences foreign trade: evidence from the U.S. and China

Using a gravity model of trade and the U.S. and Chinese panel data, I present evidence that supports the views that linguistic links have become more important in foreign trade than geographical proximity and that linguistic influence on trade is more significant in China than in the U.S. The estimated result based on a broad panel of economies shows little overall relation between religious similarity and foreign trade in both the U.S. and China. But there is an indication that the religious dissimilarity tends to retard foreign trade with poor countries and regions and to encourage foreign trade with richer places. I also found that, although religious retardation on foreign trade is more significant in China than in the U.S., religious dissimilarity tends to retard the US export more than that of China; by contrast, it tends to retard the Chinese import more than that of the U.S. At last, the socio-economic implications of the estimated results are discussed.     

Unexpected but authentic use of an ethnically–marked dialect

Recent work on language crossing in the U.S. has examined the temporary appropriation of African American Vernacular English by white youth in an effort to participate in the current popularity and prestige of hip–hop culture, or in order to highlight racial boundaries. While such verbal behavior probably encompasses most white use of AAVE, it is not the only way in which whites (or other non–blacks) can use the variety. This paper presents a case study of the language of a 23 year old white female who makes consistent use of many distinctive linguistic features associated with AAVE. I argue that the interaction of ideologies of race, class, localness and language allow her to be considered an ingroup member despite her biographical race. This suggests that there is a tension between academic linguistic theory and actual speaker practice in assigning authenticity to individuals, and I conclude that language ideologies and other forms of qualitative evidence should be taken into account by sociolinguists looking at the link between language and race.     

电子政府的信息网络安全及防范对策

本文从信息网络系统、安全管理、安全技术人才等方面分析了我国电子政府信息网络的安全问题 ,结合我国电子政府的现状与特点 ,提出了电子政府信息网络安全的防范对策 ,即构建一个由网络技术支撑层、网络技术应用层、网络管理层、网络安全人才层组成的信息网络安全体系结构。     

網絡組織成員合作的穩定性模型分析

本文應用博弈論建立了一個網絡組織成員合作的穩定性模型,通過模型分析作者提出網絡組織的穩定性依賴於多種因素,其中,信任機制、懲罰機制是網絡組織穩定的基本因素。本文通過對中國網絡組織的一般性分析,指出特殊主義文化背景下的中國網絡組織的信任機制和懲罰機制更多的來源於非正式制度,而非正式制度作用的空間局限性,是導致中國區際網絡組織穩定性差的重要原因,本文最後提出了中國網絡組織穩定性提升的建議。     

论语文教师的角色定位

语文教育所面临的问题和改革的任务 ,对语文教师的角色内涵提出了新的要求。语文教师转变课堂教学观念 ,树立崭新的语文课程性质观 ,并担当好教学的设计者、学习的促进者、终身学习者和研究者的角色 ,是中小学语文教育走出“少慢差费”困境的一个关键