Title
Adaptive K-nearest neighbour algorithm for WiFi fingerprint positioning
Abstract
K-nearest neighbour is one of the most widely used algorithms for indoor positioning systems. However, the error for each estimated position notably varies depending on the K value used for the algorithm. Therefore, if K is a fixed value, the estimation error for the positions cannot be further reduced. In this Letter, I propose an algorithm that adapts the K value for each position by analysing the correlation between the K value and the received WiFi signal strength. The proposed algorithm provides an improvement above 30% on the positioning accuracy compared to the algorithm with fixed K value.
Year
DOI
Venue
2018
10.1016/j.icte.2018.04.004
ICT Express
Keywords
DocType
Volume
KNN,Positioning,Fingerprint
Journal
4
Issue
ISSN
Citations 
2
2405-9595
3
PageRank 
References 
Authors
0.40
3
2
Name
Order
Citations
PageRank
Jongtaek Oh130.73
Jisu Kim221128.11