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Please predict whether this patent is acceptable.PATENT ABSTRACT: A method includes reading a plurality of historical data from a storage. The method also includes generating, using a processor, a candidate pattern list. The method also includes determining, using the points stored in the candidate pattern list, whether at least one maximal clique exists in the candidate pattern list, each maximal clique indicating a known significant pattern. The method further includes, in response to determining that at least one maximal clique exists in the candidate pattern list, for each of the at least one maximal cliques, determining a signature of the maximal clique and storing the signature of the maximal clique and an identifier identifying the known significant pattern to a library in the storage. The method further includes determining causal relationships between the identified significant patterns and storing in the library.