12. The system of claim 11 , wherein generating the first matrix comprises: collecting data points of the first subset classified as the same building automation system point type; concatenating the attributes of the data points of the first subset classified as the same building automation system point type; calculating, for each of the substrings, the frequency the selected substring appears in the concatenated attributes associated with each building automation system point type; and constructing the first matrix with columns of the concatenated attributes, rows of the substrings, and individual elements of the frequency that the selected substring appears the concatenated attributes associated with the selected building automation system point type.
12. The system of claim 11 , wherein generating the first matrix comprises: collecting data points of the first subset classified as the same building automation system point type; concatenating the attributes of the data points of the first subset classified as the same building automation system point type; calculating, for each of the substrings, the frequency the selected substring appears in the concatenated attributes associated with each building automation system point type; and constructing the first matrix with columns of the concatenated attributes, rows of the substrings, and individual elements of the frequency that the selected substring appears the concatenated attributes associated with the selected building automation system point type. 16. The system of claim 12 , wherein the indicator of the probability, for each of the substrings and for each of the building automation system point types, is equal to the frequency that the selected substring appears in the concatenated attribute associated with the selected building automation system point type summed over the substrings and the concatenated attributes associated with each building automation system point type, divided by the number of the occurrences of any of the substrings in the concatenated attributes associated with the selected building automation system point type.