融合时间感知和多兴趣提取网络的序列推荐

针对序列推荐任务中的时间动态性和多重兴趣建模问题,提出一种时间感知的项目嵌入方法,用于学习项目之间的时间关联性。在此基础上,提出一种融合时间感知和多兴趣提取网络的序列推荐(time-aware multi-interest sequence recommendation,TMISA)方法。TMISA采用自注意力序列推荐模型作为局部特征学习模块,以捕捉用户行为序列中的动态偏好;通过多兴趣提取网络对用户的全局偏好进行建模;引入门控聚合模块将局部和全局特征表示动态融合,生成最终的用户偏好表示。实验证明,在5个真实推荐数据集上,TMISA模型表现出卓越性能,超越了多个先进的基线模型。

数据驱动的技术预测之研究评析——以FUSE项目为例

数据驱动的技术预测具有较高的现实意义和研究价值,已获得美国、日本等发达国家政府和学术界的高度重视,美国情报高级研究计划署(IARPA)的FUSE项目就是基于海量科技信息预测新兴技术的典型研究实践活动。文章从技术视角对FUSE项目产出的重要论文、专利和会议交流材料等进行分类梳理和深入研究。从中分析其主要研究成果和实现思路,并在此基础上提出对数据驱动的技术预测的综合启示。

排名列表项目展示方式对于项目评价的极化效应

排名列表是帮助消费者快速识别品牌或产品优劣的手段。研究基于空间隐喻理论,探究排名列表的不同展示方式(垂直vs水平)对消费者列表项目评价的极化影响及作用机制。通过5个实验发现:消费者对于垂直排名列表相比水平排名列表中的项目具有更大的评价极化效应,并且验证了项目感知差异在上述关系中的中介作用,即垂直排名列表的评价极化效应是由个体较高的排名列表项目感知差异所驱动的。此外,当属性可评估性较低时,才会出现不同列表项目的评价极化效应;相反,当排名列表项目属性可评估性较高时,该评价极化效应消失。

基于元数据增强的多模态会话推荐模型

为学习会话推荐中不同项目属性的共享表示和提升推荐性能,提出一种基于元数据增强的多模态会话推荐模型。应用项目元数据模态感知模块从项目元数据中学习不同项目属性的共享表示,将离散重组编码学习集成到推荐模型中,设计一种双循环知识蒸馏框架,最大化不同通道学习到的会话嵌入的互信息。与现有主流模型相比,该模型在大压缩比下实现了快速推理,展示出优越的推荐性能。

粤港澳大湾区科技园地域性设计研究综述

文章综述了大湾区科技园地域性设计的理论研究进展;基于科技园地域性设计实践分类标准,对案例的类型及特点进行梳理;提出研究展望,以期为我国高质量发展背景下科技园的地域性设计提供参考。

Project Team Perception of Causes of Building Cost Overruns： A Reflection in Tanzania

The paper provides an empirical insight into the significance of shared cognition reflected in the perception of key actors in selected construction projects. It has explored how clients, consultants and contractors prioritize causes of cost overrun in building projects in Tanzania and measured the statistical variance in their order of rank. A total of 55 respondents were selected from public projects that had experienced cost overruns. The results show an inclination of the top 4 causes of cost overrun being technical and originate from internal sources. The Spearman correlation coefficient established a strong positive correlation in the ranking of causes of cost overrun in construction project by clients, consultants and contractors, suggesting a shared cognition is in place for the project team. The outcome provides a good base for contemplating success of mitigation measures for cost overruns and reiterates the significance for a shared cognition for project team success.

District Policy---Social Practice Through Internal and External Discourses： How the Implementation of a Single Regional Political Instrument Is Perceived, Understood and Communicated

This paper focuses on how the implementation of a single regional political instrument is perceived, understood and communicated. Designed as a regional political instrument, the Norwegian Ministry of Transport and Communications started a pilot project： ＂Driver education as a part of upper secondary school in district Norway＂. The focal point in this paper is to explore how the professional participants understand and interpret the project as a regional political instrument in order to maintain the local community, identity and local belonging. The theoretical approach is based on Giddens＇s actor/structure theory, while the analysis based on discourse analysis, in the analysis we separated the arguments used in the professional discourse. We detected different categories of argument in the discourses among the professionals. In addition to the professional discourse, we became aware of a personal discourse. In both discourses the political instrument was perceived to be important in order to maintain the local community, create equality and maintain local identity and a sense of belonging.

奖励众筹用户的项目分享意愿研究

利用结构方程模型,从众筹平台和社交网络平台两个层面分析奖励众筹用户的项目分享意愿。研究发现:用户对项目的认可度受到项目展示视觉效果、信息质量、项目创新性以及众筹用户风险感知的影响;在社交网络平台层面,用户的分享意愿受到自我形象表达和社会互动动机的驱动。