Additional file 3.

An image in pdf format, showing the accuracy of KNNImpute with respect to choice of K. This was generated using a symmetric implementation of the KNNImpute algorithm described in Troyanskaya et al. Neighbors are weighted in direct proportion to their similarity to the query gene. Similarity is measured using correlation. Unlike the weighting scheme we use for our wNN approach, KNNImpute is still very sensitive to the choice of K.

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Ryan et al. BMC Bioinformatics 2010 11:197   doi:10.1186/1471-2105-11-197