1. A computerized method of assigning a building automation system point type to a plurality of unclassified data points of a building automation system, the method comprising: receiving, at a processing circuit, the plurality of unclassified data points from one or more subsystems or devices of the building automation system, each of the unclassified data points comprising at least one attribute containing a substring; classifying each data point of a first subset of the unclassified data points by associating a building automation system point type of a plurality of building automation system point types with each data point of the first subset, wherein remaining unclassified data points form a second subset; generating a term set containing the substrings that appear in the attributes of the first subset of data points; calculating, for each substring in the term set, a frequency value indicating a frequency that the substring appears in the attributes of the first subset of data points associated with one of the building automation system point types; repeating the calculating for each of the building automation system point types such that a frequency value is calculated for each unique combination of a selected substring and a selected building automation system point type; generating a first matrix, each element of the first matrix corresponding to one of the unique combinations and containing the frequency value calculated for the unique combination; using the elements of the first matrix to calculate, for each of the unique combinations, an indicator of a probability that the presence of the selected substring in the at least one attribute of a data point results in the data point belonging to the selected building automation system point type; assigning a building automation system point type to each data point of the second subset by finding the substring and potential building automation system point type pair having the greatest indication of probability; and using the data points of the second subset with the assigned building automation system point types to control one or more subsystems or devices of the building automation system.
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.