INFORMATION RETRIEVAL FROM A COLLECTION OF INFORMATION OBJECTS TAGGED WITH HIERARCHICAL KEYWORDS

The present invention can include a data processing system-implemented method or a data processing system readable media having software code for carrying out the method. The method can comprise formulating queries, searching for a plurality of information objects, or a combination thereof. In a specific embodiment, an original query with at least one keyword can be automatically expanded to an expanded query that includes at least one keyword that is not in the original query. The expanded query may be used to search for information objects that are relevant to the expanded query.