2. An artificial intelligence system in accordance with claim 1 wherein: (a) the means for matching also determines if no match exists between the statements and any of the patterns of the sets of patterns stored at the node associated with the current concept; (b) the means for storing also stores from the node associated with the current concept additional information to be outputted by the output means as an inquiry for additional statements to be inputted by the input means; and (c) the control means causes the outputting of the additional information when no match is determined.
8. An artificial intelligence system in accordance with claim 2 wherein a new concept may be assumed by default when no match occurs to identify a new concept.