Probing the Effects of Policy Changes by Evaluating Circulation Activity Data at Columbia University Libraries

Circulation data sets at Columbia University Libraries were organized, analyzed, and visualized by examining types of patrons and their circulation activities. Patrons examined included: Graduate students, Undergraduate students, Officers and Faculty, and Visitors. Circulation activities are defined as: charges, renewals, holds, and recalls. Policy decisions, usage patterns, and learning curves were detected system-wide, and those concerning loan periods and borrowing permissions impacted activity immediately. The data validated common understandings of usage patterns and verified that faculty hold books longest, that overall activity has declined, and that patrons have adapted to online transactions. This article discusses academic years 2003–04 to 2009–10.     

Web日志挖掘数据预处理方法研究

Web日志挖掘技术是Web数据挖掘中最重要的应用。通过对挖掘服务器日志文件的分析和研究，可以对网站的组织结构及其性能进行改进，增加个性化服务，发现潜在的读者群体。数据预处理关系到Web日志挖掘的质量。数据预处理包括数据清理、识别用户、识别用户会话、格式化，目的是分割服务器日志为多个独一无二的用户的一次访问序列，并给予了算法实现。     

试论以就业为导向的高职行业英语教学评估体系的构建

课程教学评估应该包括对教师和学生双方的评估。传统的评估方式无法全面客观地反映教师教学质量和学生学习效果,不能很好的促进以学生就业为导向的目标的实现。为了对高职行业英语课程教学质量进行有效监控,提高学生学习效果,使评估更好地促进教学,有必要利用教学评估新理念,构建高职行业英语课程教学多元化评估体系。     

跆拳道概念的逻辑分析

跆拳道概念是研究跆拳道理论和实践的基础,跆拳道概念及相关术语的规范与丰富对研究跆拳道理论与实践具有重要的学术意义,同时也能继续促进跆拳道项目的发展。本文采用文献资料法、逻辑分析法对跆拳道概念认识进行了辨析,论述了跆拳道的溯源发展,分析了目前跆拳道概念存在的问题,并用逻辑学中的“属加种差”定义法对跆拳道的概念进行了重新界定。     

大文件观:当代中国档案学的必然选择——兼与王茂跃先生商榷

本文从大文件观产生的背景入手．指出了大、小文件概念与广义文件、狭义文件概念的设置标准．分析和揭示了中外广义文件概念的一致．尔后从“文档一体化管理”的呼唤和电子文件管理原则等方面．总结出：大文件观应是当代中国档案学的必然选择。     

Mining movies for song sequences with video based music genre identification system

Musical sequences with actors dancing and lip-synching to songs sung by playback singers are integral parts, particularly of South Asian movies. Fans seek out movies for their songs and they often seek songs of a particular genre. In fact, song and dance sequence of South Asian movies are an industry of their own. Given the huge numbers of movies produced in South Asia over the past decades, most of which are in digital archives, it is an important problem to automatically extract and categorise their musical sequences. This paper proposes a system for musical sequences extraction from movies. Our method invokes an SVM-based classifier and makes as well a novel application of probabilistic timed automaton to distinguish musical sequences from non-musical. Our system analyses both audio and video signals to give a classifier that not only extracts musical sequences from movies but identifies their genre. We achieved a recall of 93.24% with precision of 87.34% in song extraction when applied on 10 popular Bollywood movies. An accuracy of 89.5% has been achieved on Bollywood song genre identification.     

数据挖掘技术在物流管理中的应用

在分析了数据挖掘技术与物流管理特点的基础上,详细描述了数据挖掘技术中聚类分析技术在物流管理中对货物分类的优化应用,同时对数据挖掘技术在物流网点分布和建设以及物流货物运送中解决复杂问题的能力进行了描述。     

清代贵州六盘水境内矿业兴衰原因

清代,因统治者经营边疆、开放矿禁及铸币所需,促进了贵州六盘水境内大规模的矿业开采,其发达程度为历代所不能比拟,矿业开发极大推动了该地区人口增长和社会发展,但因课税沉重,开采过度,成同战乱等原因,清末,六盘水境内矿业逐渐凋敝。     

浅议当代采矿技术发展的研究

经济的快速发展,工业的不断壮大,对于矿产的需求量也越来越多,这就要求采矿业不断地机械化、标准化和高效化,要求采矿技术不断地朝着先进、安全的目标发展。本文对于目前的采矿技术进行了介绍,并对采矿技术的未来发展进行了展望。     

试析计算机数据挖掘技术在档案信息管理系统中的运用

随着社会科技的快速发展,计算机网络技术得到迅速推广与普及。不仅推动了社会的进步,还在很大程度上改善了人们的生活状况。计算机技术被应用到各个领域,给社会各界带来了极大的便利。我国的档案信息管理工作也受到计算机技术的影响。本文通过介绍计算机数据挖掘技术,分析了数据挖掘技术的形式和在档案管理系统中的运用及其意义。