基于J2EE的手写体公式识别系统的设计与实现

手写体识别现已应用到多个行业之中,常见的如财务系统、税务系统、金融系统等领域,手写体识别的出现大大提高了各行各业的工作效率及精准性。对于教育行业,手写体识别主要用于课程作业的识别,该系统基于该需求,运用JavaEE技术开发了一个基于Tensorflow框架的手写体识别算法的公式识别系统,使用spring MVC作为应用框架,以tomcat作为服务器进行部署。该系统能对公式进行识别以及计算,对在线教育领域具有优良的应用价值。     

Recognition-directed recovering of temporal information from handwriting images

This paper analyses a handwriting recognition system for offline cursive words based on HMMs. It compares two approaches for transforming offline handwriting available as two-dimensional images into one-dimensional input signals that can be processed by HMMs. In the first approach, a left–right scan of the word is performed resulting in a sequence of feature vectors. In the second approach, a more subtle process attempts to recover the temporal order of the strokes that form words as they were written. This is accomplished by a graph model that generates a set of paths, each path being a possible temporal order of the handwriting. The recognition process then selects the most likely temporal stroke order based on knowledge that has been acquired from a large set of handwriting samples for which the temporal information was available. We show experimentally that such an offline recognition system using the recovered temporal order can achieve recognition performances that are much better than those obtained with the simple left–right order, and that come close to those of an online recognition system. We have been able to assess the ordering quality of handwriting when comparing true ordering and recovered one, and we also analyze the situations where offline and online information differ and what the consequences are on the recognition performances. For these evaluations, we have used about 30,000 words from the IRONOFF database that features both the online signal and offline signal for each word.     

Responsive interaction for a large Web application: the meteor shower architecture in the WebWriter II Editor

Traditional server-based web applications allow access to server-hosted resources, but often exhibit poor responsiveness due to server load and network delays. Client-side web applications, on the other hand, provide excellent interactivity at the expense of limited access to server resources. The WebWriter II Editor, a direct manipulation HTML editor that runs in a web browser, uses both server-side and client-side processing in order to achieve the advantages of both. In particular, this editor downloads the document data structure to the browser and performs all operations locally. The user interface is based on HTML frames and includes individual frames for previewing the document and displaying general and specific control panels. All editing is done by JavaScript code residing in roughly twenty HTML pages that are downloaded into these frames as needed. Such a client — server architecture, based on frames, client-side data structures, and multiple JavaScriptenhanced HTML pages' appears promising for a wide variety of applications. This paper describes this architecture, the Meteor Shower Application Architecture, and its use in the WebWriter II Editor.     

手写体不规则数码脱机识别的研究与实现

为了进一步研究手写体不规则数码脱机识别技术,开发了手写体不规则数码识别软件,提出了一种新的识别方法——弧向判别法,对具有平滑特征的符号识别给出了一种可行的识别方法,实现中采用了查表细化法、数值重组等关键技术。实验表明,该软件识别的正确率在90%以上,大大地提高了工作效率。     

Conceptualization,development and implementation of a web-based system for automatic evaluation of mathematical expressions

Assessment and feedback are important parts of the teaching and learning of mathematics; and in general, the process can benefit by the introduction of technology. MathDIP is a web-platform which provides automatic evaluation and feedback of each step of the solution of a math problem. The system incorporates a Computer Algebra System to perform the evaluation and a mathematical expression editor which allows the user to interact with the system using his/her own handwriting. This paper reports on the design, development and evaluation of the system. The usability results of its implementation on an Introductory University Mathematics course show good performance in design and functionality issues. Also, results show that in general, the students participating in the study have a high level of acceptance for the system and perceive that its use motivated and strengthened their learning of the specific math topics covered in the course.     

基于多通道融合的连续手写识别纠错方法

在基于识别的界面中,用户的满意度不但由识别准确度决定,而且还受识别错误的纠正过程的影响.提出一种基于多通道融合的连续手写笔迹识别错误的纠正方法.该方法允许用户通过口述书写内容纠正手写识别中的字符提取和识别的错误.该纠错方法的核心是一种多通道融合算法.该算法通过利用语音输入约束最优手写识别结果的搜索,可纠正手写字符的切分错和识别错.实验评估结果表明,该融合算法能够有效纠正错误,计算效率高.与另外两种手写识别错误纠正方法相比,该方法具有更高的纠错效率.     

测控设备web网络服务器化研究

为实现利用Internet自带的客户端浏览器对现场设备进行远程监控的目的,设计并实施了新型web网络服务器化远程测控系统。系统中测控设备内嵌嵌入式web服务器,既能自身作为测控终端直接采集数据,又能通过CAN总线与其他测控器进行组网,实现类似网关的功能。硬件设计主要包括：嵌入式web服务器模块、测控器模块以及其接口模块设计与实施。软件设计主要选用Linux操作系统和嵌入式web服务器Boa实现CGI技术,设计添加CAN控制器驱动程序后完成IE浏览器与嵌入式web服务器以及测控器三者之间的通信。利用该系统进行温度测试,实验成功并能满足实时性,充分表明利用Internet浏览器、嵌入式web服务器组建并控制CAN网络的新型远程测控系统的先进性与可行性。     

英文手写联机识别的基础模型

为了识别较为工整的英文联机手写文字,定义了适合每个字母的字元,一共有七组不同的基本子元。使用简单的二维图形学,与简单的数学计算,可以确定每个不同字母的字元性质。使用这些字元,对大小写字母与数字实施具体组合定义,因为每个字符的具体定义内容,完全各不相同,依照逻辑可以推断,能够成功迅速的识别不连笔的较为工整的英文手写字符。这种建模方法,如果移植到类似的不同国家或地区的文字,如果笔画工整,每个字符又互相独立,那么在逻辑上就可以判定很有应用价值。     

基于Web浏览器的SSL VPN网关系统的设计和实现

在分析IPSec VPN与SSLVPN各自优劣势的基础上,提出了一种基于Web浏览器的SSL VPN网关系统的体系结构并给出了具体的实现方法.系统主要由HTTP协议代理Applet、VPN网关上的Web服务器和VPN反向代理服务器组成.系统提供了两种安全访问内网的模式,即隧道模式和替换模式.用户直接通过浏览器从VPN网关上下载Applet或点击用户界面中提供的资源列表就可以安全地访问内部网络中的资源.     

A Fuzzy Statistical Rule Generation Method for Handwriting Recognition

This paper presents a statistical approach for rule-base generation of handwriting recognition. The proposed method integrates the heuristic feature selection with the statistical evaluation and thus improves the performance of the rule generation as well as of the fuzzy handwriting recognition system. Fuzzy statistical measures are employed to identify relevant features from a given large handwriting database. First an automatic rule-base mechanism is presented. To reduce the time needed for this generation mechanism an additional heuristic feature selection step is introduced. Tests show that this generated rule-base improved the recognition results over previous approaches.     

基于MathML的网络数学公式编辑器的实现

针对目前网上数学公式不能被查询和重用的弊端,提出一种基于MathML的网络数学公式编辑器MathEdit的实现方案。MathEdit采用标准的JavaScript和DOM实现,使得数学公式能够以不同于传统交流的方法在Web上处理和传输。MathEdit适用于任何支持MathML的浏览器,具有极大的灵活性和可扩展性。     

基于数据库小本征值重置的贝叶斯分类器

在给定概率分布条件下对贝叶斯分类器进行改进,提出一种基于数据库的小本征值阈值重置的贝叶斯分类器。用一个阈值替代类协方差矩阵小于阈值的本征值,使给定数据库的分类错误率最小,是一种优于零子空间法的分类方法。通过在MNIST 6×104个手写体数字数据库的测试,识别率大于96%。对小字集手写体汉字进行的实验表明,识别率大于99%。     

一种手机浏览器的加速引擎设计与实现

提出一种手机浏览器加速引擎,目的是为了解决高可信网络环境中如何更好地在移动终端推广数字内容服务。通过对浏览器客户端请求站点的预处理,以及对页面无效数据的过滤和有效数据的压缩,同时传输层采用混合协议的方式来提高用户的浏览体验,提高页面访问速度,并尽可能降低服务器成本,另外该引擎通过反馈机制来调节系统的访问效率,以使得系统的性能达到最优。     

A multi-tier semantics for Hop

Hop is a multi-tier programming language where the behavior of interacting servers and clients are expressed by a single program. Hop adheres to the standard web programming style where servers elaborate HTML pages containing JavaScript code. This JavaScript code responds locally to user’s interactions but also (following the so-called Ajax style) requests services from remote servers. These services bring back new HTML fragments containing additional JavaScript code replacing or modifying the state of the client. This paper presents a continuation-based denotational semantics for a sequential subset of Hop. Though restricted to a single server and a single client, this semantics takes into account the key feature of Hop namely that the server elaborates client code to be run in the client’s browser. This new client-code dynamically requests services from the server which, again, elaborate new client code to be run in the client’s browser. This semantics details the programming model advocated by Hop and provides a sound basis for future studies such as security of web applications and web continuations.     

Secure and Light Weight Elliptic Curve Cipher Suites in SSL/TLS

In the current circumstance, e-commerce through an online banking system plays a significant role. Customers may either buy goods from E-Commerce websites or use online banking to move money to other accounts. When a user participates in these types of behaviors, their sensitive information is sent to an untrustworthy network. As a consequence, when transmitting data from an internal browser to an external E-commerce web server using the cryptographic protocol SSL/TLS, the E-commerce web server ensures the security of the user’s data. The user should be pleased with the confidentiality, authentication, and authenticity properties of the SSL/TLS on both the user’s web browser and the remote E-commerce web server. E-Commerce web servers should choose the best SSL/TLS cipher suites for negotiating the user in order to attain such optimistic scenarios, as the cipher suite used in SSL/TLS plays an important role in securing E-Commerce web servers. The paper primarily focuses on analyzing the SSL/TLS cipher and elliptic curves. The paper also recommends the best elliptic curve cipher suites for E-Commerce and online banking servers, based on their power consumption, handshake execution time, and key exchange and signature verification time.     

基于appweb的嵌入式网络监控系统的构建

提出了一种嵌入式网络监控系统的实现方法。它的监控端采用嵌入式linux设备,并以AppWeb作为嵌入式web服务器,以SQLite作为嵌入式数据库,应用CGI技术实现了嵌入式web服务器与用户浏览器之间的动态页面交互。     

基于XML技术的Web Browser仿真器

Web Browser仿真器对browser的大部分重要功能进行仿真，与Web server交互，并务求与browser有同样的响应。文章介绍了Web Browser仿真器的设计与实现，通过使用XML技术，模拟Web服务器高负荷状态，以达到自动测试系统性能，获取测试所需结果数据的目的。该系统在Web server软件开发测试阶段能方便快速模拟多个测览器发出的请求或响应，并能有效进行高负荷跟踪测试。     

The state of the art in Japanese online handwriting recognition compared to techniques in western handwriting recognition

This paper compares the current state of the art in online Japanese character recognition with techniques in western handwriting recognition. It discusses important developments in preprocessing, classification, and postprocessing for Japanese character recognition in recent years and relates them to the developments in western handwriting recognition. Comparing eastern and western handwriting recognition techniques allows learning from very different approaches and understanding the underlying common foundations of handwriting recognition. This is very important when it comes to developing compact modules for integrated systems supporting many writing systems capable of recognizing multilanguage documents.Received: January 12, 2002, Accepted: March 6, 2003, Published online: 4 July 2003     

数字化校园视频监控中间件的设计与实现

提出了一种基于中间件的数字化校园视频监控系统的设计与实现方案.该系统基于B/S网络结构,由嵌入式网络摄像机、监控中心服务器和客户端浏览器等主要模块构成.阐述了系统模型以及各个功能模块的实现方法.该方案具有较高的通用性、便携性以及十分优越的性价比,为应用于数字化校园视频监控提供了一种可行的方法.     

Knowledge base grid: A generic grid architecture for semantic web

The emergence of semantic web will result in an enormous amount of knowledge base resources on the web. In this paper, a generic Knowledge Base Grid Architecture (KB-Grid) for building large-scale knowledge systems on the semantic web is presented. KB-Grid suggests a paradigm that emphasizes how to organize, discover, utilize, and manage web knowledge base resources. Four principal components are under development: a semantic browser for retrieving and browsing semantically enriched information, a knowledge server acting as the web container for knowledge, an ontology server for managing web ontologies, and a knowledge base directory server acting as the registry and catalog of KBs. Also a referential model of knowledge service and the mechanisms required for semantic communication within KB-Grid are defined. To verify the design rationale underlying the KB-Grid, an implementation of Traditional Chinese Medicine (TCM) is described.