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    • 1. 发明授权
    • Location-to-landmark
    • 位置到地标
    • US08620570B2
    • 2013-12-31
    • US13435229
    • 2012-03-30
    • Patrick M. BaudischJohn C. Krumm
    • Patrick M. BaudischJohn C. Krumm
    • G01C21/36
    • G01C21/3644G01C21/36G01C21/3647G01C21/3679
    • A mapping application that returns results for a target location as a function of at least one nearby landmark. The one or more nearby landmarks can be selected based on an expected user familiarity with the landmark, a precision of the landmark and/or a spatial relationship of the landmark with respect to the target location. Although landmarks are an integral aspect of navigation, they have rarely been used within electronic navigation devices. Electronic navigation means for a mobile device or other devices can guide the user along a route using photographs of landmarks together with audio and text instructions that reference these landmarks. This can assist older users who often find their mobility hampered by declines in sensory, cognitive and motor abilities.
    • 作为至少一个附近地标的函数返回目标位置的结果的映射应用程序。 可以基于期望的用户熟悉地标,地标的精度和/或地标相对于目标位置的空间关系来选择一个或多个附近地标。 虽然地标是导航的一个组成部分,但它们很少在电子导航设备中使用。 用于移动设备或其他设备的电子导航装置可以使用沿着路线的照片的用户引导用户以及引用这些地标的音频和文本指令。 这可以帮助那些经常发现自己的移动受到感官,认知和运动能力下降阻碍的老年用户。
    • 2. 发明授权
    • Transport-dependent prediction of destinations
    • 运输依赖的目的地预测
    • US08538686B2
    • 2013-09-17
    • US13228460
    • 2011-09-09
    • Robert W. GruenJohn C. Krumm
    • Robert W. GruenJohn C. Krumm
    • G01C21/30
    • G01C21/3617
    • A destination analysis module is described which estimates at least one destination of a user given a partial path taken by the user within a geographic area. The destination analysis module operates by detecting a mode of transportation that a user uses to traverse the path (e.g., automobile, public transportation, walking, etc.). The destination analysis module then loads a model associated with the mode of transportation into a destination prediction module and estimates at least one destination based on the path and the model. The model has various components that depend on the mode of transportation, such as routing network information and prior probability information.
    • 描述了目的地分析模块,其估计给定用户在地理区域内取得的部分路径的用户的至少一个目的地。 目的地分析模块通过检测用户穿过路径(例如,汽车,公共交通,步行等)的运输方式进行操作。 目的地分析模块然后将与运输模式相关联的模型加载到目的地预测模块中,并基于路径和模型估计至少一个目的地。 该模型具有依赖于运输方式的各种组件,例如路由网络信息和先验概率信息。
    • 6. 发明授权
    • Learning, storing, analyzing, and reasoning about the loss of location-identifying signals
    • 学习,存储,分析和推理位置识别信号的丢失
    • US07647171B2
    • 2010-01-12
    • US11171891
    • 2005-06-29
    • Eric I. HorvitzJohn C. Krumm
    • Eric I. HorvitzJohn C. Krumm
    • G01C21/00
    • G01S19/14G01S19/34
    • A location-centric signal shadow mapping and storing architecture that creates maps where signals, such as GPS, cannot be seen with ease because of natural or synthetic features such as groups of tall buildings. Such maps are used with other information, such as the dynamics of the sensed velocity that had been seen before the loss of the signals, to reason about the location and likely activities being carried out by one or more people. Inferences can be made based on information about organizations and services associated with structures and locations proximal to the locations where signals were lost. Also, such reasoning can be used to turn off or to reduce the power consumed by the receivers of the location information, potentially with the joint use of accelerometers to identify when significant accelerations occur.
    • 以位置为中心的信号阴影映射和存储架构,其创建地图,其中诸如GPS的信号由于自然或合成特征(例如高层建筑群)而不容易看到。 这种地图与其他信息一起使用,例如在信号丢失之前已经看到的感测速度的动态,以及关于一个或多个人执行的位置和可能的活动的理由。 可以基于与信号丢失的位置附近的结构和位置相关联的组织和服务的信息进行推论。 此外,这种推理可以用于关闭或者减少接收机对位置信息消耗的功率,潜在地可以通过联合使用加速度计来识别何时出现重要的加速度。
    • 9. 发明申请
    • OPEN-WORLD MODELING
    • 开放世界建模
    • US20090006297A1
    • 2009-01-01
    • US11770541
    • 2007-06-28
    • Eric J. HorvitzJohn C. KrummMurugesan S. Subramani
    • Eric J. HorvitzJohn C. KrummMurugesan S. Subramani
    • G06N5/04
    • G06N99/005
    • The claimed subject matter provides systems and/or methods that facilitate generating an inference about events that may not have yet been observed. Open-world modeling can be used to take a history of observation so as to understand trends over time in the revelation of previously unseen events, and to make inferences with subsets of data that new unseen events will be seen. Thus, inaccuracies associated with predictions generated from incomplete data sets can be mitigated. To yield such predictions, open-world submodels and closed-world submodels that do not allow for previously unseen events can be combined via a model mixture methodology, which fuses inferences from the open- and close-world models.
    • 所要求保护的主题提供了有助于产生关于可能尚未观察到的事件的推断的系统和/或方法。 开放世界建模可以用来观察观察历史,以便了解以前不可见的事件的启示,随着时间的推移,了解趋势,并对数据的数据进行推论,发现新的看不见的事件。 因此,可以减轻与由不完整数据集产生的预测相关联的不准确。 为了产生这样的预测,开放世界的子模型和封闭世界的子模型不允许以前看不见的事件可以通过模拟混合方法进行组合,这种模型混合方法融合了开放和密切世界模型的推论。
    • 10. 发明授权
    • Calibration of a device location measurement system that utilizes wireless signal strengths
    • 使用无线信号强度的设备位置测量系统的校准
    • US07411549B2
    • 2008-08-12
    • US11763422
    • 2007-06-14
    • John C. KrummJohn C. Platt
    • John C. KrummJohn C. Platt
    • G01S3/02
    • H04W64/00G01C21/206G01S5/0252H04W16/20H04W16/225H04W88/18
    • An architecture for minimizing calibration effort in an IEEE 802.11 device location measurement system. The calibration technique is based upon a regression function that produces adequately accurate location information as a function of signal strength regardless of gaps in the calibration data or minimally available data. The algorithm takes a set of signal strengths from known room locations in a building and generates a function giving (x,y) as a function of signal strength, which function may then be used for the estimation of new locations. Radial basis functions, which are simple to express and compute, are used for regression. The fact that the algorithm maps signal strength to continuous location makes it possible to skip rooms during calibration, yet still evaluate the location in those rooms.
    • 用于最小化IEEE 802.11设备位置测量系统中的校准工作的架构。 校准技术基于回归函数,其产生与校准数据或最小可用数据中的间隙无关的信号强度的函数的足够精确的位置信息。 该算法从建筑物中的已知房间位置获取一组信号强度,并产生作为信号强度的函数给出(x,y),该函数然后可用于估计新位置。 用于表达和计算的简单的径向基函数用于回归。 该算法将信号强度映射到连续位置的事实使得可以在校准期间跳过房间,但仍然评估这些房间中的位置。