Effect of ensemble classifier composition on offline cursive character recognition

In this paper we present novel ensemble classifier architectures and investigate their influence for offline cursive character recognition. Cursive characters are represented by feature sets that portray different aspects of character images for recognition purposes. The recognition accuracy can be improved by training ensemble of classifiers on the feature sets. Given the feature sets and the base classifiers, we have developed multiple ensemble classifier compositions under four architectures. The first three architectures are based on the use of multiple feature sets whereas the fourth architecture is based on the use of a unique feature set. Type-1 architecture is composed of homogeneous base classifiers and Type-2 architecture is constructed using heterogeneous base classifiers. Type-3 architecture is based on hierarchical fusion of decisions. In Type-4 architecture a unique feature set is learned by a set of homogeneous base classifiers with different learning parameters. The experimental results demonstrate that the recognition accuracy achieved using the proposed ensemble classifier (with best composition of base classifiers and feature sets) is better than the existing recognition accuracies for offline cursive character recognition.     

图像识别在考生身份认证系统中的应用

针对传统考生身份认证方法的缺陷,提出一种基于人脸识别的考生身份认证系统。首先利用图像采集系统采集考生人脸图像,然后对人脸图像进行特征提取和特征选择,并将人脸特征输入到人脸特征库进行匹配,最后采用支持向量机算法对人脸进行分类识别。实验结果表明,该系统提高了考生身份识别的正确率,减少了识别时间,能够很好满足实际考试的要求。     

大学生社会主义核心价值体系的认同现状分析

建设社会主义核心价值体系是我们党理论创新的又一重要成果,为高校思想政治教育提出了新的要求。当前,有必要进一步加强大学生社会主义核心价值体系认同教育,为此,高校应在对大学生社会主义核心价值体系调查问卷分析的基础上,积极探索有效的社会主义核心价值体系教育的方法。     

黑泉水库工程面板混凝土配合比试验研究

通过对混凝土的配比试验及施工中的质量控制,介绍了高寒地区面板混凝土抗冻、防裂的有效措施及施工经验。     

新型图书馆用条码识别设备研究

条码技术在图书馆已得到广泛的应用，传统的条码识别设备成本高，功能单一。本文提出一种新的图书馆用条码识别设备，通过普通的视频摄像头结合图像处理和识别算法实现条码自动识别，具有成本低、可扩展性高的优点。实验结果和应用分析表明该设备是一个非常有前景的图书馆自动化设备。     

A Comparison of Text-Based Methods for Detecting Duplication in Scanned Document Databases

This paper presents an experimental evaluation of several text-based methods for detecting duplication in scanned document databases using uncorrected OCR output. This task is made challenging both by the wide range of degradations printed documents can suffer, and by conflicting interpretations of what it means to be a duplicate. We report results for four sets of experiments exploring various aspects of the problem space. While the techniques studied are generally robust in the face of most types of OCR errors, there are nonetheless important differences which we identify and discuss in detail.     

Generalized Hamming Distance

Many problems in information retrieval and related fields depend on a reliable measure of the distance or similarity between objects that, most frequently, are represented as vectors. This paper considers vectors of bits. Such data structures implement entities as diverse as bitmaps that indicate the occurrences of terms and bitstrings indicating the presence of edges in images. For such applications, a popular distance measure is the Hamming distance. The value of the Hamming distance for information retrieval applications is limited by the fact that it counts only exact matches, whereas in information retrieval, corresponding bits that are close by can still be considered to be almost identical. We define a Generalized Hamming distance that extends the Hamming concept to give partial credit for near misses, and suggest a dynamic programming algorithm that permits it to be computed efficiently. We envision many uses for such a measure. In this paper we define and prove some basic properties of the Generalized Hamming distance, and illustrate its use in the area of object recognition. We evaluate our implementation in a series of experiments, using autonomous robots to test the measure's effectiveness in relating similar bitstrings.     

体育院系学生运动技能迁移规律的研究与应用

为了优化教学过程提高教学效果 ,通过教学实验发现 ,清晰的动作表象与技能迁移密切相关 ,共同的身体素质要求和相似的关键技术环节是技能间迁移的基础 ,对技术动作的高度分化和概括化则是产生技能迁移的根本原因。     

体育院系学生蛙泳技术主因子结构初步研究

】运用Ｒ－型因子分析法研究影响体育院系游泳普修课学生掌握和提高蛙泳技术的主要因素,探索构成学生掌握和提高蛙泳技术的主因子结构,依据有关学科理论定量分析各主因子对掌握和提高蛙泳技术的影响程度及作用,结果表明：弹跳力与记忆综合特征因子、柔韧与动感综合特征因子分别是主因子结构中第一、第二主因子,它们对蛙泳技术的学习影响及作用相对较大。通过对这两个主因子中的高载荷因子的逐步回归计算,建立了蛙泳技术教学的数学模型,制定出学生身体素质、认知心理能力的评价等极标准,从而为控制教学过程和提高教学效果提供了参考信息和理论依据     

说话人识别中基于音素分类的数据选择方法

在说话人识别中,有效语音数据的选择是一个重要的预处理环节.常用的数据选择方法根据能量信息的强弱对有效数据进行提取,但在实际情况中能量的高低与语音数据并无必然联系.本文在对传统方法进行分析比较的同时引入语言学知识,提出基于辅音信息的有效数据选择方法.该方法通过对活动语音检测结果中音素识别结果进行分析,保留所有元音,对辅音进行筛选,去除无益于说话人识别的干扰辅音音素,从而实现对有效语 音数据的选取.实验表明,应用该方法得到的说话人识别结果,明显优于传统的基于能量的数据选择算法,如基于G.723.1标准的活动语音检测算法和近期提出的基于交叉熵顺序统计滤波的端点检测算法.