Refinement and calibration mechanism for improving classification of information assets

• US 8,892,561 B2
• Filed: 05/03/2013
• Issued: 11/18/2014
• Est. Priority Date: 09/30/2011
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Pandit, Sushain, Shank, Charles K., Wolfson, Charles D.
• Primary Examiner(s): PHILLIPS, III, ALBERT M
• Application Number:
  US13/886,404
• Publication Number:
  US 20130246321A1
• Time in Patent Office: 564 Days
• Field of Search: 707/738, 707/740, 707/E17.09
• US Class Current: 707/738
• CPC Class Codes: G06N 20/00 Machine learning
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 10/067 Enterprise or organisation modelling

Abstract

Techniques are described for refining the manual classification of assets classified or categorized using the terms of a business glossary. A semantic refinement mechanism is used to refine the manual classification of such assets, as well as subsequently evaluate the refined asset classifications. Further, the refined asset classifications may be used as a training set for a machine learning classifier. That is, should the classification of an asset contributing to a refinement change, the refinement based on that classification may be undone, at least in some cases.

Claims

1. A computer-implemented method for refining asset classifications, the method comprising:

receiving a plurality of assets, each asset having a classification of a term, wherein each term is selected from a business glossary which provides a hierarchy of controlled vocabulary of terms used within an organization and wherein each asset is characterized using a set of attributes selected from a domain ontology; and

upon determining a first term assigned to a first one of the assets satisfies a set of refinement criteria, refining the classification of the first asset by assigning the first asset a second term from the business glossary, wherein the second term is more precise in the business glossary than the first term and wherein the refinement criteria includes;

determining that the term of a second one of the assets comprises a descendent of the classification of the first asset, and

determining that each attribute of the first asset is at a lower level in the domain ontology than a corresponding attribute in the second asset.

2. The method of claim 1, further comprising:

storing a reference to the first asset and to at least a second asset, wherein the second asset contributed to the refinement to the first asset, according to the set of refinement criteria.

3. The method of claim 2, further comprising:

upon determining the second asset has been reclassified, reevaluating, by operation of the one or more computer processors, the refined classification assigned to the first asset against the refinement criteria.

4. The method of claim 3, further comprising:

undoing the refined classification assigned to the first asset if the first asset no longer satisfies the set of refinement criteria.

5. The method of claim 3, further comprising:

comparing a weight assigned to a user who assigned the classification to the second asset with a weight assigned to a user who reclassified the second asset;

undoing the refined classification of the second asset if the weight of the user who assigned the classification to the second asset exceeds the weight assigned to the user who reclassified the second by a specified threshold; and

retaining the refined classification of the second asset if the weight of the user who assigned the classification to the second asset does not exceed the weight assigned to the user who reclassified the second by the specified threshold.

6. The method of claim 1, further comprising, training a machine learning classifier based on the classifications assigned to the plurality of assets and further based on the refined classification assigned to the first asset.