基于知识图谱和频繁序列挖掘的旅游路线推荐

大数据在提供海量多源信息的同时,也带来了信息过载问题,这在旅游领域内表现得尤为突出。针对当前游客在制定旅行路线时需要花费大量时间和精力的现状,首先,提出一种融合多源旅游数据构建知识图谱的方法,有效地抽取相关旅游领域知识;其次,利用知识图谱及大量旅行游记生成旅游路线数据库,并提出一种能够根据游客类型生成海量候选路线的频繁路线序列模式挖掘算法;最后,设计了一种多维度路线搜索和排序机制来为用户推荐个性化的旅游路线。基于真实旅游大数据的实验结果表明,该方法可以同时考虑旅行天数、人物类型和景点类型喜好等多方面因素,帮助游客快速制定个性化的旅行路线,有效提升游览体验。     

基于互联网信息的多约束多目标旅游路线推荐

针对新游客在陌生城市如何规划旅游路线的问题,研究基于景点评分机制以及用户多约束的旅游路线推荐问题。首先提取景点的开放时间、门票与GPS坐标等及旅游网站上对于景点的评价信息等;然后提出一种基于多约束的k贪心算法,可以为游客推荐较好的旅游线路,并有效消除了推荐系统对先验知识的依赖。以驴评网上北京著名景点的信息作为数据集,实现并评估了推荐算法。实验结果表明,该方法能够为用户提供准确合理的路线规划。     

基于用户兴趣和兴趣点流行度的个性化旅游路线推荐

针对传统的旅游路线推荐算法推荐准确率不高的缺陷,提出一种基于兴趣点(POI)流行度和用户兴趣偏好的个性化旅游路线推荐(PTIR)算法。首先通过分析得到用户真实的历史旅游足迹;然后根据用户在每个景点的逗留时间提出基于时间的用户兴趣偏好;最后在给定的旅行时间限制、起点和终点下,设计最优旅游路线计算方法。在Flickr社交网站的真实数据集上进行实验,结果显示,相比传统的只考虑POI流行度的算法,该个性化旅游路线推荐算法的准确率和召回率都有较大提升;相比只考虑用户兴趣偏好的算法,该个性化旅游路线推荐算法的准确率和召回率也有所提高。实验结果表明综合考虑POI流行度和用户兴趣偏好能使路线推荐得更准确。     

基于模糊APACA的多目标团队个性旅游线路设计

针对旅游线路设计的综合性和复杂性,提出个性化旅游线路设计概念,建立多目标的团队个性化旅游线路模型。同时,用模糊三角函数解决旅行时间的不定性。根据问题特点提出改进的自适应多态蚁群算法,找到Pareto最优旅行线路解集,安排日程。该模型不仅考虑景点开放时间、游客总旅行天数等硬性约束,也考虑团队游客个性需求、景点最佳旅行时间等柔性约束。对模型和算法进行仿真实验分析,并与遗传算法做比较,结果表明提出的模型和算法是可行有效的。     

“智慧旅游”的华侨城创新

在北京、深圳等城市发布的智慧旅游规划中,景区可以把每天的游客量,以及每个时段的游客量通过网络或者手机向社会公布。旅游主管部门计划与电信公司合作,向游客推送景点游客流量信息,引导游客避开高峰期购票游览。     

云环境下景区游客流量监控与推荐系统设计

设计了云环境下景区游客流量监控与推荐系统,包括CC3200流量监控与景点推荐两部分,流量监控由RFID电子门票统计游客数量,数据经Wi-Fi上行本地AP节点,由AP节点汇聚至云推荐服务器;当前游客流量、时间富裕度、游客满意度,经服务器解析计算得景点综合推荐指数,主动为游客推荐旅游景点,规划最佳游览路线;经测试,系统工作稳定、数据准确,适用于各类景区游客流量监控与推荐服务。     

基于聚类分析算法的智能旅游规划

为了解决游客选取旅游景点以及最短旅行线路时的困惑,将智能导游引入到旅游规划中,在地图软件的基础上插入厦门的旅游景点数据进行二次开发。首先以层次聚类算法分解出游客喜好的景点集合类簇,再以改进的密度法在不同地区有针对性地以不同的搜索半径搜索附近满足要求的景点,为游客提供一个最优的旅游规划。     

一种简捷的旅游景点推荐方法

面对旅游业的快速发展及旅游信息的爆炸式增长,景点推荐不仅能节约游客搜索旅游信息的时间,还能给他们带来许多便利.提出一种简捷的旅游景点推荐方法,通过获取旅游平台上用户对旅游景点的访问量、收藏数及点击率等信息,采用基于用户的协同过滤算法来为游客进行景点推荐.实验结果表明,该方法是正确可行的,并且用户对推荐结果满意度较高.     

基于用户需求的旅游路线推荐方法

为解决旅游路线推荐中个性化程度不高的问题,提出一种基于用户需求的旅游路线推荐方法.通过获取用户分享的景点照片与游玩时间,综合考虑景点热度、用户偏好和访问时间等用户需求,为用户推荐得分最高的景点,在此基础上建立融合时间与费用约束的旅游路线推荐模型,针对该模型设计内嵌混沌扰动和方差判定准则的模拟退火求解算法.实验结果表明,该方法满足了不同用户的旅行需求,提高了旅游景点推荐的准确性,为实现旅游路线个性化推荐服务提供了一种技术和方法.     

基于知识图谱的个性化甘肃旅游线路推荐方法研究

针对传统推荐算法面临着数据稀疏的问题导致准确度较低,提出了基于知识图谱的个性化旅游线路推荐方法。通过使用属性知识扩充方法增加知识获取的广度,同时使用属性值融合方法筛选最有效的属性值,从而提升旅游领域知识图谱的覆盖面和准确度,然后将用户的个性化需求,如时间,旅游类型等为输入,根据旅游领域知识图谱的特点规划旅游线路,根据各旅游景点的评分和景点的距离进行评分,最后将旅游线路进行排序推荐给用户,实现旅游线路个性化推荐。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate