Eigen representations have become one of the most popular techniques in pattern recognition (e.g. face recognition) because of its strong discriminative ability. Eagle and Pentland proposed using the so-called eigenbehavior to measure the distance between people, which is then used for the construction of a social network.
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Any system, cognitive or biological, which is able to relate internally, self-organized, stable structures (eigenvalues) to constant aspects of its own interaction with an environment can be said to observe eigenbehavior.
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The eigenbehavior of the system creates “relatively stable attitudes that arise when an operation is utilized for its own results” (1102).
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The investigation of the eigenbehavior and the stability of bogie vehicles, taking into account all degrees of freedom, is performed with the same numerical procedures as for a wheelset or a bogie.
Source: wiktionary