Patent ID: 7213205

Claim:
A document categorizing method for categorizing a plurality of documents in an electronic system according to semantic similarity, said method comprising: obtaining a plurality of clusters of documents, each cluster having a distinctive name; evaluating a degree of relation between at least two clusters by evaluating the similarity between the evaluated clusters based on the documents included in the respective evaluated clusters; merging the evaluated clusters into a new combined cluster when their degree of relation is determined to be not less than a predetermined first value; and assigning a new name to said new combined cluster based on the degree of relation between its constituent evaluated clusters; wherein: if the degree of relation of said constituent evaluated clusters is less then a second predetermined value, which is greater than said first predetermined value, the new name assigned to said new combined cluster conforms to a first naming convention indicative of a degree of relation between said first and second predetermined values; and if the degree of relation of said constituent evaluated clusters is not less then said second predetermined value, the new name assigned to said new combined cluster conforms to a second naming convention indicative of a degree of relation not less than said second predetermined value; and wherein: said first naming convention includes a concatenation of at least a name segment of each of said constituent evaluated clusters with a first delimiter inserted between the concatenated name segments; and said second naming convention includes a concatenation of at least a name segment of each of said constituent evaluated clusters with a second delimiter, different from said first delimiter, inserted between the concatenated name segments.