Argument-based mixed recommenders and their application to movie suggestion

Recommender systems have become prevalent in recent years as they help users to access relevant items from the vast universe of possibilities available these days. Most existing research in this area is based purely on quantitative aspects such as indices of popularity or measures of similarity between items or users. This work introduces a novel perspective on movie recommendation that combines a basic quantitative method with a qualitative approach, resulting in a family of mixed character recommender systems. The proposed framework incorporates the use of arguments in favor or against recommendations to determine if a suggestion should be presented or not to a user. In order to accomplish this, Defeasible Logic Programming (DeLP) is adopted as the underlying formalism to model facts and rules about the recommendation domain and to compute the argumentation process. This approach has a number features that could be proven useful in recommendation settings. In particular, recommendations can account for several different aspects (e.g., the cast, the genre or the rating of a movie), considering them all together through a dialectical analysis. Moreover, the approach can stem for both content-based or collaborative filtering techniques, or mix them in any arbitrary way. Most importantly, explanations supporting each recommendation can be provided in a way that can be easily understood by the user, by means of the computed arguments. In this work the proposed approach is evaluated obtaining very positive results. This suggests a great opportunity to exploit the benefits of transparent explanations and justifications in recommendations, sometimes unrealized by quantitative methods.     

IDC机房空调节能技术探讨

本文对我国当前机房空调普遍存在的问题以及IDC机房节能技术进行了分析,并提出了一些关于空调节能的措施建议。     

电子政务网络安全事件分析与防范策略

随着Internet的快速发展,电子政务的飞速发展,其承载的政府管理和服务系统日趋庞杂,这就对电子政务网络系统的安全性提出了更高的要求。而互联网上的安全事件不断出现,黑客事件屡见不鲜,已经成为桎梏电子政务等互联网应用的重要因素。本文将从目前电子政务网络安全事件类型分析,介绍目前影响电子政务发展的主要网络安全问题,并结合实践与应急事件响应、安全管理架构等方面,给出一些建议。     

太白金矿1150～1250m间矿体采矿方法的推荐选择

太白金矿 1 2 50m标高以上矿体回采即将结束 ,1 2 50～ 1 1 50m间矿体开拓工程即将竣工 ,因而推荐选择 1 1 50～ 1 2 50m间矿体采矿方法成为矿山首要问题。     

工资、薪金个税扣缴及年终奖计税公式缺陷的思考

代扣代缴工资、薪金个人所得税是单位会计工作的一项重要工作任务,事涉国家、集体、个人多方利益,工作敏感度高,因此做好此项工作,对维护国家利益,凝聚人心,建立和谐社会有其特殊意义。在实践中除了要对许多特殊情况和例外事项作出分析判断并恰当处理外,特别是针对现行年终奖、年终加薪、劳动分红计税公式存在的缺陷,提出了较为中肯的改进建议。     

柴油机用GF/Nylon6冷却风扇破坏的原因及改进措施简

介绍了柴油机冷却风扇的结构,生产风扇的材料及大众公司尼龙6性能,分析了环形风扇发生疲劳破坏的原因及主要裂纹起源,提出了改进冷却风扇性能的措施.     

Bugs,Bats and Animal Estates: The Architectural Territories of ‘Wild Beasts’

For architecture, animals and insects have conventionally represented the threat of infestation - a parasitic and insanitary uninvited presence. Could the animal world, however, offer previously untapped opportunities for design innovation? At a time when the relationship between architecture and nature is coming under question, Ben Campkin takes the opportunity to bring attention to the wider social and geographical processes lying beneath the occupation of the man-made environment by insect and animal life. Copyright © 2010 John Wiley & Sons, Ltd.     

长治市农村环境保护初探

叙述了长治市农村污染日益加重,农村生态环境不断恶化的现状,分析了造成农村生态环境恶化的原因,提出,完善农村环境保护法律法规体系,加强农村环保管理体制建设,加大农村环保资金投入、大力发展生态农业等建议和措施。     

餐饮食品营养成分影响因素分析

目的 对餐饮食品中营养成分的影响因素进行调查分析,为推广餐饮食品营养标识应用,助力营养健康食堂和营养健康餐厅建设,营造更健康的饮食环境提供理论依据。方法 在具有南北餐饮特色的北京和舟山两地组织当地食品营养及餐饮行业专业技术人员进行专题小组访谈,对访谈结果进行整理分析。结果 参与访谈人员普遍认为我国餐饮食品营养成分影响因素主要在原材料、前处理、烹饪方式及烹饪条件等方面。结论 对餐饮食品营养成分影响因素的了解将有助于进一步展开针对性研究,帮助餐饮业提升餐饮食品营养品质,不断改善居民的膳食生活质量,提高国民营养健康水平,助力健康中国建设。     

底部框架抗震墙砖房的受力性能及侧向刚度分析

在试验研究基础上[1],对这种房屋的侧向刚度进行了分析,提出了侧向刚度的确定方法和简化公式;研究了地震作用下这种结构的受力性能,并提出了抗震设计的建议.