1. A computer-implemented method, comprising: receiving, at a computer system, a string of characters that includes no word-delineating breaks; generating, by the computer system from the string of characters, a plurality of candidate word groups that are portions of the string of characters; determining, by the computer system, frequencies with which all or a portion of each of the candidate word groups occur in a corpus; and selecting, by the computer system using the determined frequencies, one or more of the candidate word groups for submission to an entity, wherein the one or more candidate word groups are selected based on each of the one or more candidate word groups having a determined frequency that is greater than determined frequencies for at least a threshold number of other candidate word groups.
1. A computer-implemented method, comprising: receiving, at a computer system, a string of characters that includes no word-delineating breaks; generating, by the computer system from the string of characters, a plurality of candidate word groups that are portions of the string of characters; determining, by the computer system, frequencies with which all or a portion of each of the candidate word groups occur in a corpus; and selecting, by the computer system using the determined frequencies, one or more of the candidate word groups for submission to an entity, wherein the one or more candidate word groups are selected based on each of the one or more candidate word groups having a determined frequency that is greater than determined frequencies for at least a threshold number of other candidate word groups. 7. The method of claim 1 , wherein a frequency with which a candidate word group occurs in the corpus is determined based upon a number of documents in the corpus containing one or more of the words in the candidate word group.