改进的FP-growth关联规则算法及其在图书推荐系统中的应用

在FP-growth关联规则算法的基础上提出了基于动态二维数组的算法,引入可变二维数组结构,动态的将事务数据库存入该数组中,可以大大提高数据挖掘的效率。并以图书馆管理系统中的图书借阅数据作为训练数据,使用改进的FP-growth算法实现了高校图书推荐系统,本系统能够从图书馆图书借阅记录中挖掘和发现读者借阅行为中隐含的规律,得到读者与图书的频繁项集,从而可以实现对不同身份的读者推荐不同类型的图书功能。     

基于Eclat算法的图书推荐系统仿真

研究了图书馆的个性化推荐系统应用问题,针对常用的协同过滤技术不适用于大数据量的情况,在深入研究关联规则Eclat算法的基础上,为了高效挖掘和优先搜索有效信息,提出了一种改进算法,并将算法应用于图书推荐系统的仿真实验中,新算法充分利用了垂直数据表示和交叉计数的高效优势,直接在垂直数据表示的数据集上通过广度优先搜索和交叉计数产生频繁模式,通过对流通数据库中的借阅记录进行挖掘得到关联规则,产生读者感兴趣的书目.仿真结果表明算法可以在大数据量的情况下实现关联规则的高效挖掘,在图书推荐系统中取得了良好的应用效果.     

基于大数据挖掘技术的图书馆服务自动化感知模型

针对图书馆服务自动化感知效果不佳，导致无法实现学生个性化推荐的问题，提出将最近邻搜索K-means聚类算法与关联规则算法相结合，构建一个基于大数据挖掘技术的图书馆服务自动化感知模型。首先，基于读者借阅行为，采用最近邻搜索K-means聚类算法(NNSK-means)分别从个体层次和集体层次进行聚类分析，挖掘出读者的阅读趋势和阅读兴趣；然后通过基于Apriori关联规则算法进行图书间与院系间关联规则挖掘；最后基于挖掘结果进行读者借阅不同种类图书概率反映和分析，从而提升自动化感知和个性化推荐效果。结果表明，采用提出的基于大数据挖掘技术的图书馆服务自动化感知模型后，热门图书推荐服务与学生个性化推荐服务的准确率和学生满意度分别保持在98%和90%以上，表明构建的模型可实现图书馆服务自动化感知，模型性能良好，可为学生提供更加精准的个性化推荐服务。     

支持个性化推荐的Web页面关联规则挖掘算法

分析了应用于个性化推荐的Web页面关联规则的特点,提出了“壹支持数下k关联规则”的思想,根据这一思想设计、实现了一种应用于个性化推荐的Web页面关联规则挖掘算法——PARM(Pageview Association Rule Mining)及频繁项集的Freq-Set-Tree存储结构,在产生频繁项的同时挖掘关联规则,因而能提高效率。实验证明在个性化推荐系统中PARM算法的效率明显高于FP-Growth算法。     

支持个性化推荐的Web面关联规则挖掘算法

分析了应用于个性化推荐的Web页面关联规则的特点，提出了“壹支持数下k关联规则”的思想，根据这一思想设计、实现了一种应用于个性化推荐的Web页面关联规则挖掘算法——PARM(Pageview Association Rule Mining)及频繁项集的Freq-Sdt-Tree存储结构，在产生频繁项的同时挖掘关联规则，因而能提高效率。实验证明在个性化推荐系统中PARM算法的效率明显高于FP-Growth算法。     

图书馆书目协同智能推荐系统设计与实现研究

为了获得更加理想的图书馆书推荐效果,设计了一种图书馆书目协同智能推荐系统。首先设计了图书馆书目协同智能推荐系统的总体结构,然后利用文献引证关系度量读者兴趣度量范围,采用采用协同过滤算法计算读者相似度,获取与读者感兴趣相似的结果,最后根据相似度得到读者对每种图书感兴趣的评价值,并根据评价值进行图书馆书目智能推荐。仿真实验结果表明,该系统可以获得最优的推荐图书馆书目,读者对图书馆书目推荐结果的满意度高。     

关联规则在高校图书馆借阅数据挖掘中的应用

文章用数据挖掘中的关联规则技术对高校图书馆学生的借阅数据进行挖掘分析,从而挖掘出读者的阅读兴趣,发现书籍借阅的关联规则,科学地进行建议借阅和图书推荐等服务,以提高图书馆管理效率。     

基于改进关联规则挖掘算法的图书推荐服务

针对关联规则Apriori挖掘算法存在的缺点,本文提出了一种新的改进算法,并将该算法应用于图书推荐服务模型,以满足读者的个性化信息服务需求。     

电子商务网站推荐系统中关联规则推荐模型的实现

介绍了一个电子商务网站推荐系统中关联规则推荐模型的实现过程。该模型的实现运用了概念层次的思想方法,采用了不需要产生候选集的频繁集挖掘算法FP_Tree挖掘关联规则。该推荐系统已经在一家电子商务网站上投入使用。     

动态书目推荐图书管理系统设计与实现

在图书管理系统中,如何处理复杂读者信息和频繁的图书借还信息,成为系统设计的一个关键问题。本文设计并实现了一个基于内容过滤与协同推荐算法的图书馆管理系统。系统可针对不同用户推荐个性化图书,给予读者动态推荐书目,并通过用户发布的图书评论生成好评率排名,实现图书的动态管理。实践应用表明,该系统在一定程度上能满足个性化图书的动态推荐管理需求。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.