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Semi-supervised Learning for the Positioning of a Smartphone-based Robot

스마트폰 로봇의 위치 인식을 위한 준 지도식 학습 기법

  • Yoo, Jaehyun (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kim, H. Jin (School of Mechanical and Aerospace Engineering, Seoul National University)
  • 유재현 (서울대학교 기계항공공학부 항공우주신기술연구소) ;
  • 김현진 (서울대학교 기계항공공학부 항공우주신기술연구소)
  • Received : 2014.11.17
  • Accepted : 2015.03.31
  • Published : 2015.06.01

Abstract

Supervised machine learning has become popular in discovering context descriptions from sensor data. However, collecting a large amount of labeled training data in order to guarantee good performance requires a great deal of expense and time. For this reason, semi-supervised learning has recently been developed due to its superior performance despite using only a small number of labeled data. In the existing semi-supervised learning algorithms, unlabeled data are used to build a graph Laplacian in order to represent an intrinsic data geometry. In this paper, we represent the unlabeled data as the spatial-temporal dataset by considering smoothly moving objects over time and space. The developed algorithm is evaluated for position estimation of a smartphone-based robot. In comparison with other state-of-art semi-supervised learning, our algorithm performs more accurate location estimates.

Acknowledgement

Supported by : 한국연구재단

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