Exploiting the Similarity of Non-Matching Terms at Retrieval Time

In classic Information Retrieval systems a relevant document will not be retrieved in response to a query if the document and query representations do not share at least one term. This problem, known as term mismatch, has been recognised for a long time by the Information Retrieval community and a number of possible solutions have been proposed. Here I present a preliminary investigation into a new class of retrieval models that attempt to solve the term mismatch problem by exploiting complete or partial knowledge of term similarity in the term space. The use of term similarity enables to enhance classic retrieval models by taking into account non-matching terms. The theoretical advantages and drawbacks of these models are presented and compared with other models tackling the same problem. A preliminary experimental investigation into the performance gain achieved by exploiting term similarity with the proposed models is presented and discussed.     

信息生命周期管理的分层模型及实施方法

针对信息生命周期管理进行深入研究，设计出信息生命周期管理的分层模型，分别对信息存储层、信息管理层和信息服务层三个层次的具体操作进行详细描述。提出信息生命周期管理实施的方法，分析具体案例,并对将来的工作进行展望。     

适应个性化服务的大学图书馆管理模式创新

大学图书馆的传统服务模式以"重藏轻用"为特征,这种服务模式难于适应新形势下高校培养人才的需要。提供个性化服务是大学图书馆服务模式发展的必然趋势。要做好个性化服务,大学图书馆必须在建立信息营销机制、建立学科馆员制度、加强馆际协作、理顺内部关系及提高馆员素质等方面变革管理模式。     

面向信息检索的排除词识别研究

针对信息检索中存在的词语排除关系问题，给出排除词的定义并说明排除词在信息检索中的作用。指出排除词实质上是最大准交集型歧义切分字段的伪歧义切分所导致的，描述排除词的识别方法，并给出识别的结果，并在实际的信息检索平台上对排除词词库进行应用测评。     

文本分类C#实现*

设计并实现一个基于向量空间模型和简单贝叶斯的文本分类系统，系统采用层级多标签的分类策略。详细介绍词语切分统计、终分类器值计算、层级小类校正和兼类判断四个子系统模块。基于向量空间模型分类的第一级大类和层级小类的微平均分别为89.7%和77.8%，简单贝叶斯分别为67.6%和66.5%。     

论审读对提高期刊学术地位的指导作用——以《石油勘探与开发》为例

《石油勘探与开发》的审读专家由国内资深的勘探开发专家团队构成;审读侧重对刊出论文的学术性、创新性,以及对中国石油勘探开发的指导性的评价.审读对主编、编辑人员把握刊出论文的水平,提高办刊质量和扩大刊物影响等都可以起到指导作用.     

船舶电站仿真系统数学模型

阐述了船舶电站计算机仿真器逻辑和控制系统数学模型及系统动态特性的数学模型,并着重介绍了动态特性数学模型的计算机算法。     

优秀十项全能运动员动态协调模型的对比分析

十项全能被誉为“田径之王”,技术复杂,难度大。虽然我国的十项全能水平不断提高,但与世界水平相差很远。本文运用十项全能训练的动态协调模型,对中国及世界优秀群体运动员１９８６—１９９６年的平均成绩进行了对比分析。从系统论的角度得出了几点结论,为十项全能运动的发展提供参考依据,为实现最佳化控制训练提供理论依据和参考数据。     

我国城市社区体育的发展模式──对我国城市社区体育的探讨之三

在讨论了构建我国城市社区体育发展模式的基本依据的基础上,提出我国城市社区体育由领导、协调和操作三个子系统构成。街道社区在结构中居于核心地位,发挥着重要的中介作用。该模式具有福利性与经营性相结合的运行机制,它与其他社会形态和社会活动互相补充。     

Cognitive load of critical thinking strategies

Argument–counterargument integration (Nussbaum, 2008) refers to the process of evaluating, refuting, and synthesizing arguments on two sides of an issue when creating justification for an overall conclusion. This study compared the cognitive load of two critical thinking strategies related to argument–counterargument integration: (a) constructing design claims that minimize disadvantages of an alternative, and (b) weighing refutations (which weaken an argument by arguing that there are more important values at stake). College students (N = 285) first completed the Need for Cognition (NFC) scale and were then presented with materials summarizing arguments and counterarguments on the topic of grading class participation. Participants completed a small, integrative essay justifying a stand on the issue, and completed the Mental Effort Rating Scale (Paas, 1992). Participants who generated complex weighing refutations reported more mental effort than those constructing complex design claims (and the control group), with a stronger relationship with those high in NFC. The need to coordinate disparate elements in working memory may explain the higher load associated with constructing weighing refutations. Students may need more (and different types of) scaffolding in using this strategy than when constructing a design claim, which is a more sequential process.