PROBLEM TO BE SOLVED: To provide a knowledge network visualization system for visualizing learning routes and progress in learning (learning history) as a knowledge network diagram in computer-aided instruction, and to provide a knowledge network visualization method, and a program for the same.;SOLUTION: In the knowledge visualization system, a knowledge network diagram is displayed. The knowledge network diagram is displayed by overlaying, on a knowledge frame diagram showing a three-dimensional brain blood vessel model where question unit branch areas are disposed in accordance with prescribed classification of corresponding question units:; a learning route diagram where a portion or all of the knowledge frame model is colored in a light color and indicated as a three-dimensional phylogenetic tree model; and a learning progress diagram where question unit branch areas of learned question units in the learning route diagram are colored in a dark color and indicated. When a question unit branch area on the knowledge network diagram is clicked, a question, an answer and an explanation are read out of a question DB, an answer DB, and an explanation DB, respectively, on the basis of address information embedded in the question unit branch area, and displayed as a question unit card.;COPYRIGHT: (C)2011,JPO&INPIT
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