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IODetector: A Generic Service for Indoor/Outdoor Detection

机译：IODetector：室内/室外检测的通用服务

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摘要

The location and context switching, especially the indoor/outdoor switching, provides essential and primitive information for upper-layer mobile applications. In this article, we present IODetector: a lightweight sensing service that runs on the mobile phone and detects the indoor/outdoor environment in a fast, accurate, and efficient manner. Constrained by the energy budget, IODetector primarily leverages lightweight sensing resources, such as light sensors, magnetism sensors, and cell tower signals. For universal applicability, IODetector assumes no prior knowledge (e.g., fingerprints) of the environment and uses only on-board sensors common to mainstream mobile phones. Being a generic and lightweight service component, IODetector greatly benefits many location-based and context-aware applications. We prototype the IODetector on Android mobile phones and evaluate the system comprehensively with data collected from 34 traces that include 133 different places during a 6-week period, employing different phone models. We further perform a case study where we make use of IODetector to instantly infer the GPS availability and localization accuracy in different indoor/outdoor environments.
机译：位置和上下文切换，尤其是室内/室外切换，为上层移动应用程序提供了基本的原始信息。在本文中，我们介绍了IODetector：一种轻量级的传感服务，可在手机上运行，​​并以快速，准确和高效的方式检测室内/室外环境。受能源预算的限制，IODetector主要利用轻型传感资源，例如光传感器，磁传感器和塔信号。为了获得普遍适用性，IODetector假定没有先验环境知识（例如指纹），并且仅使用主流移动电话通用的车载传感器。作为一种通用的轻量级服务组件，IODetector大大受益于许多基于位置和上下文感知的应用程序。我们在Android手机上对IODetector进行原型制作，并使用6种不同型号的手机在6周内从34条迹线收集的数据进行了全面评估，这些迹线包括133个不同的位置。我们进一步进行案例研究，利用IODetector即时推断不同室内/室外环境中的GPS可用性和定位精度。

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