The present invention relates to a method for diagnosing the knowledge of a person to diagnose the knowledge from the verification data of the person to diagnose the knowledge using a knowledge map based on ontology composed of a relationship of knowledge objects. The present invention proposes a method for diagnosing a knowledge level by correcting the knowledge level of the person to diagnose the knowledge by comparing and evaluating the knowledge related to specific knowledge rather than determining the knowledge level about the corresponding knowledge of the person to diagnose the knowledge using only the evaluation of the specific knowledge. To this end, the present invention determines the knowledge by converging a knowledge error between the corrected knowledge level and the evaluated knowledge level of the person to diagnose knowledge by periodically repeating a forward propagation knowledge diagnosis and a backward propagation knowledge diagnosis using a gradient descent method of a neutral network theory. Accordingly, the present invention can more accurately diagnose the knowledge level and perform a diagnosis operation without previously securing learning data.
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