中国近代思想家对新式报刊功能的认识

新式中文报刊在中国沿海出现以后,引起了中国近代不同派别思想家的广泛关注,他们对新式报刊"去塞求通"等功能都有较深刻的认识,认为其具有显著的思想特色,在中国新闻思想史上占有突出的地位。     

Boosting multi-label hierarchical text categorization

Hierarchical Text Categorization (HTC) is the task of generating (usually by means of supervised learning algorithms) text classifiers that operate on hierarchically structured classification schemes. Notwithstanding the fact that most large-sized classification schemes for text have a hierarchical structure, so far the attention of text classification researchers has mostly focused on algorithms for “flat” classification, i.e. algorithms that operate on non-hierarchical classification schemes. These algorithms, once applied to a hierarchical classification problem, are not capable of taking advantage of the information inherent in the class hierarchy, and may thus be suboptimal, in terms of efficiency and/or effectiveness. In this paper we propose TreeBoost.MH, a multi-label HTC algorithm consisting of a hierarchical variant of AdaBoost.MH, a very well-known member of the family of “boosting” learning algorithms. TreeBoost.MH embodies several intuitions that had arisen before within HTC: e.g. the intuitions that both feature selection and the selection of negative training examples should be performed “locally”, i.e. by paying attention to the topology of the classification scheme. It also embodies the novel intuition that the weight distribution that boosting algorithms update at every boosting round should likewise be updated “locally”. All these intuitions are embodied within TreeBoost.MH in an elegant and simple way, i.e. by defining TreeBoost.MH as a recursive algorithm that uses AdaBoost.MH as its base step, and that recurs over the tree structure. We present the results of experimenting TreeBoost.MH on three HTC benchmarks, and discuss analytically its computational cost.

Stabbing News

There is a comprehensive body of scholarly work regarding the way media represent crime and how it is constructed in the media narrative as a news item. These works have often suggested that in many cases public anxieties in relation to crime levels are not justified by actual data. However, few works have examined the gathering and dissemination of crime statistics by non-specialist journalists and the way crime statistics are gathered and used in the newsroom. This article seeks to explore in a comparative manner how journalists in newsrooms access and interpret quantitative data when producing stories related to crime. In so doing, the article highlights the problems and limitations of journalists in dealing with crime statistics as a news source, while assessing statistics-related methodologies and skills used in the newsrooms across the United Kingdom when producing stories related to urban crime.     

语文课堂上读文悟文是提升学科素养的关键

语文核心素养的培养在对语文文本的诵读中通过朗读感悟文本、领会文本意境来挖掘文本思想的内涵。通过朗读悟文培养学生的学科素养。     

电视新闻述评的句型特点

本文基于电视新闻述评的叙述性和评论性及其传播者和受众的角度,分析了研究对象的句型特点:在有稿电声中,主谓句和主动句占有很大比重;在叙述性电声中,单句占绝对优势;在评论性电声中,复句占明显优势,以衡词为标志的评议句表达主体的观点、态度和倾向。     

Historical constructions of journalistic communication in China: on three definitions of news*

This paper examines three definitions of “news” in the history of journalism studies in China. Xu Baohuang’s definition emphasizes the “facts,” with an aim to establish an objective and neutral press model. Lu Dingyi defines news through “reporting,” which has since then transformed into the principle of “reporting with the facts.” Fan Changjiang prioritizes the “masses” in his definition, attempting to explore new ways for the operation of party-owned newspapers in the new era.     

建国后50年拜伦研究综述

自鸦片战争到现在一百多年来我国对拜伦的译介和研究几乎从未间断过,建国后形成了两个高潮,一为新中国成立后十年间,二为20世纪80年代至今。在这两个阶段中译介拜伦的原因、目的、方法和结论迥然不同。文章将对这两个阶段中拜伦的研究进行综述,并对其研究目的、方法及结论的异同作详细的比较。     

用Dreamweaver UltraDev 4 实现动态新闻管理系统

在现代企事业单位网站的新闻管理中,时效性、简单性是其中的重要内容.利用Dreamweaver UltraDev 4 的可视化操作,结合其服务器端数据库访问功能实现的动态新闻管理系统,利用WEB浏览器可以实现线更新,很好地满足了网站新闻管理的要求.     

标记系统及学术文本处理的未来（二）

标记事务影响着学者们对思考与写作系统的采纳使用。程序性标记和表示性标记会阻碍这一进程的发展,描述性标记则通过简化机械性任务,让学者们将注意力集中于内容上的做法,以加快这一进程。     

语篇中语义变异的连贯功能

本文结合语篇中语义变异的实例，从语义层和语用层几方面，探讨语义变异手段。