Internet信息检索分析与研究

综述了目前Internet 网上信息检索的主要方法及存在的问题, 并对其检索技术进行了深入的分析与比较。介绍了机器学习、智能A gent、信息过滤等新技术在信息检索中的应用, 并采用神经网络Hopfield 模型及算法进行词汇扩充来提高用户的检索提问表达, 从而提高了网上信息检索的能力。     

数字图书馆个性化服务的用户建模技术论略

针对用户兴趣和偏好建立用户模型，是整个数字图书馆个性化服务系统中的关键技术。在概速数字图书馆个性化服务及其用户建模的基础上，论述了数字图书馆个性化服务用户模型的表示方法、信息来源和技术类型。     

基于支持向量机的文本自动分类试验研究

提出了将支持向量机应用于文本自动分类的研究，与常用的K-最邻近法相比，无论是对训练数据集还是测试数据集均具有一定的优势，而且不同特征选择方法对支持向量机的影响要比K-最邻近法小。此外，从研究中的不同特征选择的评价函数来看，它们对分类有一定的影响，应用X2统计进行特征选择的分类正确率最高，其次是文本证据权，而期望交叉熵的效果最差，说明特征选择在文本自动分类中也是相当重要的。     

Analysis of Statistical Question Classification for Fact-Based Questions

Question classification systems play an important role in question answering systems and can be used in a wide range of other domains. The goal of question classification is to accurately assign labels to questions based on expected answer type. Most approaches in the past have relied on matching questions against hand-crafted rules. However, rules require laborious effort to create and often suffer from being too specific. Statistical question classification methods overcome these issues by employing machine learning techniques. We empirically show that a statistical approach is robust and achieves good performance on three diverse data sets with little or no hand tuning. Furthermore, we examine the role different syntactic and semantic features have on performance. We find that semantic features tend to increase performance more than purely syntactic features. Finally, we analyze common causes of misclassification error and provide insight into ways they may be overcome.     

Co-rumination and Immune Inflammatory Response in Healthy Young Adults: Associations with Interleukin-6 and C-Reactive Protein

A rich literature exists reinforcing the notion that both perceived and received social support has stress ameliorating and protective benefits both psychologically and physiologically. However, recent literature suggests that excessive dyadic negative problem talk about an issue, a phenomenon labeled co-rumination, may reverse much of the beneficial effects of social support. Healthy young adults participated in a laboratory research study exploring the associations between co-rumination and immune system inflammatory response. Partial correlations indicated a positive association between co-rumination and C-reactive protein and a negative association between co-rumination and interleukin-6 after controlling for stress, anxiety, and temperature. Discussion focuses on the means by which co-rumination may lead to negative health outcomes.     

翻译记忆(TM)——计算机翻译技术的新发展

机器翻译(MT ) 和机器辅助翻译(CAT ) 是两个既有联系又有着本质区别的概念。本文回顾了机器翻译的历史, 比较了机器翻译和机器辅助翻译各自的特点, 着重论述了翻译记忆软件的工作原理、特点及其应用。     

MARC著录意识探究

MARC著录意识主要体现在检索意识、整体意识、规范意识、维护意识4个方面。编目员可以采用提取文献题名关键词、复合主题词轮排、多学科文献多重标引、建立题名等方法,谩化MARC字段的检索功能;也可以利用字段、代码之间的内在逻辑关系,科学著录文献,通过905字段对有关MARC记录作关联性技术处理,从而提高MARC著录意识。     

一种可并行逆向工程处理的设计模式

建立一种可并行逆向工程处理的抽象机设计模式,并通过测试说明使用该模式可以减少处理时间。     

Simutem：一个中文信息检索系统

对一个检索系统的总体设计思想、主要实现技术作了较为具体的讨论和分析，并陈述了所做的工作。