Importance

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Abstract

A determination device 301 is a determination device that categorizes an installation environment of an optical cable 21, and includes a feature extraction unit 212 that extracts a feature vector at each position of the optical cable 21 from a vibration distribution in a longitudinal direction of the optical cable 21, a calculation unit 219 that calculates a discriminant function at each position of the optical cable 21 from the feature vector and a weight vector corresponding to the installation environment, in need of categorization, of the optical cable 21, and a determination unit 220 that compares the discriminant function with teacher signals representing two states and designates a state of the nearer of the teacher signals as a state of the optical cable 21, at each position of the optical cable 21.

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First Claim