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2007

Online Co-Localization in Indoor Wireless Networks by Dimension Reduction

8 years 10 months ago
Online Co-Localization in Indoor Wireless Networks by Dimension Reduction
This paper addresses the problem of recovering the locations of both mobile devices and access points from radio signals that come in a stream manner, a problem which we call online co-localization, by exploiting both labeled and unlabeled data from mobile devices and access points. Many tracking systems function in two phases: an offline training phase and an online localization phase. In the training phase, models are built from a batch of data that are collected offline. Many of them can not cope with a dynamic environment in which calibration data may come sequentially. In such case, these systems may gradually become inaccurate without a manually costly re-calibration. To solve this problem, we proposed an online co-localization method that can deal with labeled and unlabeled data stream based on semi-supervised manifold-learning techniques. Experiments conducted in wireless local area networks show that we can achieve high accuracy with less calibration effort as compared to s...
Jeffrey Junfeng Pan, Qiang Yang, Sinno Jialin Pan
Added 02 Oct 2010
Updated 02 Oct 2010
Type Conference
Year 2007
Where AAAI
Authors Jeffrey Junfeng Pan, Qiang Yang, Sinno Jialin Pan
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