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移动社交网络中用户上下文的自动识别与共享 被引量:4
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作者 朱雪彤 王永利 《南京理工大学学报》 EI CAS CSCD 北大核心 2013年第4期500-505,共6页
为了在移动环境中高效地识别和共享活动、情感和用户关系等高层次上下文,该文提出了一种基于贝叶斯网络的移动上下文共享系统,利用基于移动日志的贝叶斯网络自动地识别用户的活动及感情等高层次的上下文,并便于用户查看与共享。贝叶斯... 为了在移动环境中高效地识别和共享活动、情感和用户关系等高层次上下文,该文提出了一种基于贝叶斯网络的移动上下文共享系统,利用基于移动日志的贝叶斯网络自动地识别用户的活动及感情等高层次的上下文,并便于用户查看与共享。贝叶斯网络评估和软件测试实验证明了该系统的有效性,该系统可构建移动社交网络,为用户提供实时的电话簿和地理位置的社交共享服务,可广泛应用于电信行业增值服务、电子商务营销等领域。 展开更多
关键词 移动社交网络 上下文识别 贝叶斯网络 自动识别
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普适环境下基于脑电的身份及上下文状态识别 被引量:1
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作者 刘泉影 毛承胜 +1 位作者 聂碧娟 胡斌 《东南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2010年第A02期263-266,共4页
为了研究基于脑电的身份识别的具体实现,并满足用户对于普适和上下文状态感知的需求,提出了一种基于脑电的身份及上下文状态识别系统的实现方案.针对一局域范围内身份识别的普适化需求(如各接口身份验证),提出通过采集脑电、信号去噪、... 为了研究基于脑电的身份识别的具体实现,并满足用户对于普适和上下文状态感知的需求,提出了一种基于脑电的身份及上下文状态识别系统的实现方案.针对一局域范围内身份识别的普适化需求(如各接口身份验证),提出通过采集脑电、信号去噪、特征提取、模式识别各模块进行身份及上下文状态识别方法的普适化实现方案.并设计了具体实验来测试该系统.通过实验采集到5个受试者安静闭眼、听音乐闭眼和玩游戏后闭眼3种上下文状态的脑电信号,分别得到96.43%的身份识别正确率和92.31%的上下文状态识别正确率,证实了此方案的可行性. 展开更多
关键词 普适 身份识别 上下文状态识别 脑电
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基于端云协同的商用设备运动纠正系统的设计与实现
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作者 徐渊 刘志刚 +1 位作者 王卅 包云岗 《高技术通讯》 CAS 2022年第5期471-483,共13页
介绍了一种GymBeats运动纠正系统原型,该系统展示了用户如何独自通过商用设备校正运动中身体姿势的错误。具体而言,本文提出了一种新颖的上下文感知运动纠正方法,包括状态识别和错误识别。此外,开发了一套基于端云协同的系统,并通过一... 介绍了一种GymBeats运动纠正系统原型,该系统展示了用户如何独自通过商用设备校正运动中身体姿势的错误。具体而言,本文提出了一种新颖的上下文感知运动纠正方法,包括状态识别和错误识别。此外,开发了一套基于端云协同的系统,并通过一种典型的全范围练习运动来描述系统的可行性。本文面向15位用户对GymBeats的2种反馈形式进行评估,即实时语音反馈和可视化报告反馈。实验结果表明,GymBeats可以以低成本和便捷的方式来提高身体姿势的正确性。 展开更多
关键词 运动纠正 商用设备传感器 骨架提取 上下文感知识别 实时语音反馈 可视化报告反馈
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The Viewpoint of Categorization Theory on the Nature of Reading Comprehension
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作者 LV Shao-quan HU Lan-ying 《Sino-US English Teaching》 2014年第8期615-619,共5页
This paper is intended to reveal the likelihood that conceptual categorization can be used to understand a text by reconstructing the semantic categories through which the author's meaning is conveyed, and proposes a... This paper is intended to reveal the likelihood that conceptual categorization can be used to understand a text by reconstructing the semantic categories through which the author's meaning is conveyed, and proposes an alternative way to look into reading comprehension. It is proposed that categorization can be taken as an alternative approach to second/foreign language reading instruction. That is, while reading comprehension is defined in terms of the ability to recognize the inclusion and membership properties of contextually determined semantic categories in a text, the learner needs to arrange the events, actions, or concepts into a structured unit, both horizontally and vertically. Categorization theory will be introduced in relation to Rosch famous studies (1973, 1975), examples taken from a graded reader will be illustrated as how to identify items with category structure, and finally issues that are not addressed in this paper will be discussed. 展开更多
关键词 cognitive linguistics CATEGORIZATION schema theory reading comprehension graded readers
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Video Events Recognition by Scene and Group Context
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作者 裴明涛 王亚菲 赵猛 《China Communications》 SCIE CSCD 2013年第11期165-171,共7页
The ability to recognise video events has become increasingly more popular owing to its extensive practical applications.Most events will occur in certain scene with certain people,and the scene context and group cont... The ability to recognise video events has become increasingly more popular owing to its extensive practical applications.Most events will occur in certain scene with certain people,and the scene context and group context provide important information for event recognition.In this paper,we present an algorithm to recognise video events in different scenes in which there are multiple agents.First,we recognise events for each agent based on Stochastic Context Sensitive Grammar(SCSG).Then we propose the model of a scene in order to infer the scene in which the events occur,and we use a co-occurrence matrix of events to represent the group context.Finally,the scene and group context are exploited to distinguish events having similar structures.Experimental results show that by adding the scene and group context,the performance of events recognition can be significantly improved. 展开更多
关键词 events recognition scene context group context
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