Methods for conceptualization and search of block diagram based models. A method includes receiving a selected model (815) from a model library (200) comprised of a plurality of models (205), mapping physical quantities (305) to each of the plurality of properties (410) of the selected model (815), associating a semantic interpretation (535) to each of the plurality of properties (410), defining a similarity determination (500) comparing the semantic interpretation (535) of a first property (520) and the semantic interpretation (535) of a second property (525), determining property similarities (515) comparing the specific properties (620) for each of the plurality of models (205) to the specific properties (620) of the selected model (815) by applying the similarity determination (500), determining a model similarity (705) based on a weighted summation (700) of the property similarities (515), and creating a similarity list (800) of similar models (805) with sufficient model similarities (810).
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