To perform the visualization of a knee point under a condition close to a knee point obtained from a true state not including noise from a sample including noise.SOLUTION: A knee point visualizing apparatus 100 specifies a weight region in which specific knee points correspond to knee points continuously. The knee point visualization apparatus 100 calculates the stability of each weight based on a width of the weight region for each weight where a specific knee point corresponds to the knee point among a plurality of weights. The knee point visualization apparatus 100 identifies the optimum weight for visualization from the plurality of weights based on the stability, and visualizes a specific knee point based on the identified weight.SELECTED DRAWING: Figure 13
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