Local Outlier Factor

Local outlier factor (LOF) is an algorithm for finding anomalous data points by measuring the local deviation of a given data point with respect to its neighbours (Breunig et al., 2000).

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Raw data

Input data in the text box with format:
ID x y

Neighbour count:
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Show proximity matrix
Show nearest neighbours
Show average density
Show average relative density

Breunig, M. M.; Kriegel, H.-P.; Ng, R. T.; and Sander, J. (2000). LOF: Identifying Density-based Local Outliers. Proceedings of the 2000 ACM SIGMOD International Conference on Management of Data (SIGMOD). pp. 93–104. doi:10.1145/335191.335388. ISBN 1-5811-3217-4.