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Four timing experiments. Each figure is labelled according to size (m×n), percentage of missing entries (NAs), value of λ used, rank r used in the ALS iterations, and rank of solution found. The first three are simulation examples, with increasing dimension. The last is the movielens 100K data. In all cases, softImpute-ALS (blue) wins handily against ALS (orange) and softImpute (green).
