一种基于向量空间模型的文本聚类方法

研究了一种基于向量空间模型的文档聚类方法.提出了一个新的聚类模型,即在传统聚类模型的基础上增加一个文档特征向量调整模块;给出了一个特征评价函数用以进行特征提取;对一种基于相似度的平面划分聚类算法做了一些改进.实验结果表明本文提出的聚类模型是可行的.     

篇章结构在阅读理解中的作用

缺乏对篇章结构的认识是目前大学英语阅读教学的一个主要问题。由于传统教学偏重对词和句法的讲解,阅读教学缺乏对篇章的宏观处理,因而制约了学生阅读理解水平的提高。篇章结构作为文本重要的内在特征对提高阅读理解的正确性和效率有着积极作用,采用正确的阅读教学策略,传授篇章结构知识,从长远来看可以大幅提高阅读教学的效率。     

在DOS状态下显示WPS文书文件一法

本文通过对WPS文书文件相成原理的剖析，给出了一种用C语言实现在DCE状态下显示WPS文书文件的具体方法．     

Multiple orthographic codes in reading and writing acquisition

A modified Stroop Test (single-letter, letter-cluster, and whole-word colorinconsistent stimuli) showed greater interference for the more automatic orthographic coding unit—the word—than for the less automatic coding units—single letters and letter-clusters—in developing readers in second, fourth, and sixth grade (N=72, Study 1). A developmental trend was observed from relative skill in word-level orthographic-phonological correspondence in second graders to relative skill in subword level orthographic-phonological correspondences in sixth graders. A previous finding that whole word coding > letter coding > letter cluster coding in relative rate of development was replicated (N=300, Study 2). Multiple orthographic codes—for whole words, single letters, and letter clusters—were correlated with both reading and writing but patterns of correlations with the component reading and writing skills changed from first to third grade; by third grade whole word coding was not correlated with reading and writing skills but letter cluster coding was correlated with all reading and most writing skills. Cue validity —categorization of letters on the basis of differentiating rather than distinctive features—improved from second to sixth grade and may account for developmental gains in letter cluster coding. Level of cue validity was correlated with speed of sentence comprehension (N=60, Study 3). The theoretical and practical significance of multiple orthographic codes for orthographic-phonological connections in word recognition and for literacy acquisition in general is discussed.This research was supported, in part, by Grant No. 25858-01 awarded to the first author from the National Institute of Child Health and Human Development.Study 1 is based on a presentation at the 1990 meeting of the American Education Research Association. Study 2 is based on a presentation at the 1991 meeting of the American Education Research Association. Study 3 is based on a presentation at the 1989 meeting of the American Education Research Association.The authors thank the participating children from the Shoreline Public Schools (Study 1), Bellevue, Northshore and Seattle Public Schools (Study 2), and the Mukiteo Public Schools (Study 3). They also thank Sylvia Mirsepassi for secretarial assistance.     

超越的悲剧与悲剧的超越——论《子夜》的现代性

运用历史考察和哲学分析相结合的方法 ,从表层和深层 (具象和抽象 ,历时和共时 )两个方面 ,通过对吴荪甫人生命运悲剧性叙事的剖析 ,阐释了《子夜》的现代性意蕴 ,明确指出《子夜》不仅是一部现实主义的长篇巨著 ,但同时又是一部现代性很强的悲剧寓言。     

Automatic character detection and segmentation in natural scene images

INTRODUCTION Text detection and segmentation from a naturalscene is very useful in many applications. With theincreasing availability of high performance, lowpriced, portable digital imaging devices, the applica-tion of scene text recognition is rapidly expanding. Byusing cameras attached to cellular phones, PDAs, orstandalone digital cameras, we can easily capture thetext occurrences around us, such as street signs, ad-vertisements, traffic warnings or restaurant menus.Automatic recogn…     

Om： One tool for many （Indian） languages

INTRODUCTION India is a nation with pluralistic culture, a large number of cultures, ethnicities, languages and relig- ions coexisting with each other. While the culture and faith unify the country under one umbrella either by similarity or by tolerance, the language is what separates them. In the 1951 census, the first census after India attained independence, 845 languages (dialects) were identified, of which 60 were spoken by at least 100000 people each. The Indian constitu- tion iden…     

新闻阅读--英语学习的有效途径

从新闻英语的特点入手，依据语言学习的一般规律，从一个新的角度分析了新闻英语阅读对英语学习的重要作用。     

谈不同反馈模式在写作教学中的运用

反馈是写作教学中提高学生写作水平的一个不可缺少的环节。本文从会谈式反馈、同学互评式反馈、自我反馈、评语式反馈、课堂讲评式反馈等五个方面，探讨反馈在写作教学中的运用。