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Feldman Jerome Lakoff George Bailey David Narayanan Srini Regier Terry Stolcke Andreas 《Artificial Intelligence Review》1996,10(1-2):103-129
The L0 project at ICSI and UC Berkeley attempts to combine not only vision and natural language modelling, but also learning. The original task was put forward in (Feldman et al. 1990a) as a touchstone task for AI and cognitive science. The task is to build a system that can learn the appropriate fragment of any natural language from sentence-picture pairs. We have not succeeded in building such a system, but we have made considerable progress on component subtasks and this has led in a number of productive and surprising directions. 相似文献
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虚拟工厂现实场景系统平台设计与实现 总被引:1,自引:0,他引:1
随着现代化工业不断发展,模拟过程工业真实环境,并在此基础上进行地理信息显示与空间分析等成为当前的研究热点。构建基于虚拟现实(VR)和地理信息系统的(GIS)的虚拟工厂现实场景系统是进行工业生产仿真的一条有效途径,为此,设计开发一个三维的、可维护性强并具有一定扩展性的虚拟工厂现实场景系统具有重要的实用价值。本文通过数据准备、数据生成、系统扩展及客户端设计,实现了虚拟工厂现实场景系统开发过程。通过应用分析与对比,结果表明,该平台化系统具有更高的可扩展性且开发成本低,为虚拟工厂现实场景系统平台设计提供了一个良好的、可扩展的开发途径。 相似文献
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Baram Yoram Aharon-Peretz Judith Simionovici Yahalomit Ron Lior 《Neural Processing Letters》2002,16(3):227-233
This paper examines the application of virtual reality cues, generating the biofeedback effects of a real tiled floor, reported in [8], for gait improvement in Parkinson's Disease (PD) patients. A portable apparatus, comprising head and body-mounted 3-axis accelerometers, a wearable computer and see-through head-mounted display, creates a virtual tiled floor, responding to the patient's own dynamics. Performance of PD patients using the device improved (higher speed, longer stride) by about 30% on average. 相似文献
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马立荣 《电脑编程技巧与维护》2009,(10):109-110
给出了基于虚拟现实建模语言进行角色参与的虚拟场景构造方法,该研究内容可有效辅助、支持有角色参与的虚拟场景实时互动的实现及针对稳定性、安全性和适人性等特性的测试评价工作。 相似文献
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对虚拟装配技术理论进行研究,应用三维形体空间坐标变换原理,利用虚拟现实建模语言(Virtual Reality Modeling Language,VRML),结合Java语言,在Cortona浏览器的基础上构建可视的交互虚拟装配环境,并给出虚拟装配过程的实例. 相似文献
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《Computer Animation and Virtual Worlds》2018,29(3-4)
In this paper, we introduce a bare‐hand interaction method for controlling an augmented virtual character. Our method is utilizing a dynamic hierarchical structure of virtual buttons on the natural marker of the environment. Unlike the existing virtual button method, the proposed method can be used to select a very fine level. This method is adequate for controlling an augmented virtual character with a users' various intentions. We implemented several examples of manipulating an augmented virtual character such as guiding the character, selecting part of the character, and selecting a target object for the character. We also compared the performance of full arrangement and dynamic hierarchical arrangement of virtual buttons. Our method outperforms the full arrangement method, especially in the low index of difficulty. In the user study with 15 participants, the users responded that the proposed method was significantly better than the existing full arrangement method regarding efficiency and satisfaction in the case of the fine level selection. 相似文献
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随着Internet的发展,以虚拟现实建模语言(Virtual Reality Modeling Language,简称VRML)为代表的基于WWW的虚拟现实建模技术正在日益受到广泛的重视。本文归纳了VRML的编译、运行原理,给出了VRML的程序设计方法,总结了深入研究VRML的要点。 相似文献
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近年来,人工智能技术飞速发展,不少工作试图从人类的认知发展过程中探索前进方向,语言学习认知的过程成为了重点关注的研究领域。已有的语言认知研究工作主要集中在学龄前儿童母语的词汇学习认知方面,依赖于WordBank①等大规模语料库。然而就我们所知,目前在第二语言学习方面研究不多,尚未有大规模的第二语言词汇学习数据,且传统的数据收集方法难以收集到大规模数据,这也一定程度上限制了对于第二语言学习的研究工作及母语与第二语言学习的比较。针对这一问题,该文面向学龄前儿童群体设计了基于游戏性原则的数据收集方法和研究框架,用于收集第二语言的语言学习情况和用户数据,以支撑相应研究工作的开展。目前,已经实现了针对学龄前儿童的第二语言为英语的词汇认知数据收集系统,正在进行在线的数据收集。 相似文献
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韩红利 《计算机工程与设计》2006,27(18):3480-3482
简要介绍了VR和VRML(虚拟现实建模语言),说明了建立连续采煤工作面三维虚拟现实VRML模型的方法;并结合开发实际,介绍了三维造型中涉及的关键技术,即实体建模、背景设定、空间视点控制、浏览方式选择和交互动画的设置,并对其中的开发技巧进行了论述;最后给出了连续采煤工作面虚拟现实模型实例. 相似文献
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微电子机械系统与虚拟现实技术都是最新的技术生长点;将此两项技术结合,建立起微机械的虚拟现实系统,无论是对虚拟现实技术的应用,还是对微电子微机械系统的发展都具有巨大的意义。本文将VR技术引入MEMS,给出了微机械的虚拟现实系统体系结构,并在此体系基础上提出了微机械操作的多种控制方式。 相似文献
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李霞 《数字社区&智能家居》2007,1(3):764-764
本文介绍了VRML与JAVA、JAVASCRIPT通讯的原理、实现方法以及各自的性能特点,重点研究了JAVA、JAVASCRIPT和VRML在三维建模方面的结合应用技术,并给出了实例。 相似文献
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James N. Anderson Nancie Davidson Hazel Morton Mervyn A. Jack 《Computer Animation and Virtual Worlds》2008,19(5):605-619
The SPELL (Spoken Electronic Language Learning) system is a self‐access computer‐assisted language learning (CALL) package that integrates speaker‐independent continuous speech recognition technology with virtual worlds and embodied virtual agents to create an environment in which learners can converse in the target language within meaningful contextualized scenarios. In this paper we provide an overview of the functionality, architecture, and implementation of the SPELL system. We also describe four phases of usability evaluation conducted with the system and summarize the main results of these user assessments. Finally, we discuss the most significant lessons learned in the development and evaluation of the system. The paper focuses on the technological aspects of the system and its evaluation for usability and robustness, rather than its pedagogical methodology. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
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雷相波 《电脑编程技巧与维护》2009,(12):79-80
针对虚拟装配中的关键技术进行了讨论,提出了一种利用PlaneSensor节点实现造型的3D空间动作路径的规划方法,解决了基于VRML(Virtual Reality Modeling Language)虚拟装配的3D空间路径研发问题,对虚拟环境中装配路径进行了简化,减少了系统开发与集成的工作量。 相似文献