2. The method of claim 1 , 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.
5. The method of claim 2 , wherein generating the first matrix further comprises weighting the frequency that the selected substring appears in the concatenated attribute associated with the selected building automation system point type using an inverse document frequency factor.