The knowledge model construction system includes: a CAD data which stores a design information including information on configurations of the parts; an input unit which inputs an element knowledge model which includes a plurality of combinations, each of the combinations being a combination of an element knowledge and an establishment condition thereof, the element knowledge representing a causal relationship with respect to an asset; a knowledge model construction unit which extracts a combination of an element knowledge applicable to an object asset and an establishment condition thereof by comparing the CAD data of the object asset with the establishment conditions of the element knowledge model; and an object asset knowledge model which records the extracted combination of the element knowledge and the establishment condition thereof as a knowledge model. Thus, the knowledge model construction system is able to construct a knowledge model of a new asset with less man-hours.
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