Metadata that allows refiltering and data reclassification without accessing the data

• US 8,762,418 B1
• Filed: 05/31/2006
• Issued: 06/24/2014
• Est. Priority Date: 05/31/2006
• Status: Active Grant

• Current Assignee: Storage Technologies Corporation (Oracle Corporation)
• Original Assignee: Oracle America, Inc. (Oracle Corporation)
• Inventors: Milligan, Charles A., O'Nions, Gerald
• Primary Examiner(s): Chbouki, Tarek
• Application Number:
  US11/443,988
• Time in Patent Office: 2,946 Days
• Field of Search: None
• US Class Current: 707/802
• CPC Class Codes: G06F 16/35 Clustering; Classification
• CPC Class Codes: G06F 16/38 Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually

Abstract

A method for reclassifying stored objects without the need to re-access or evaluate directly such objects comprises receiving an object to be stored in a storage system and then associating metadata with the object. The metadata is then stored in a data storage system. The metadata is subsequently used to create a plurality of classification recommendations associated with the object. A storage system implementing the methods of the invention includes one or more physical storage means and a controller that executes one or more steps of the invention.

Claims

1. A method of classifying stored objects comprising:

for each of a plurality of objects to be stored in a storage system,

a) associating metadata with the object,

b) storing the metadata in a data storage system,

c) using the metadata to create a prioritized set of classification recommendations for the object, wherein the classification recommendations of the prioritized set are arranged in a prioritized list in which the recommendations are ranked from a classification most associated with the object to a classification least associated with the object based on a classification score associated with each of the recommendations and wherein the classification score provides an assessment of the relevance of a particular recommendation to the object,

d) storing the prioritized set of classification recommendations for the object,

e) selecting one of the classification recommendations associated with the object to be used as the object classification in the system,

f) re-determining the prioritized set of classification recommendations for the object in response to the occurrence of an event requiring reevaluation of the object using the metadata without directly accessing the object, and

g) selecting one of the re-determined classification recommendations for the object to be used as the object classification in the system.

2. The method of claim 1 wherein the event requiring reevaluation comprises an event selected from the group consisting of the passage of a determinable period of time, a specific communication from outside the storage system, a failure of some resource, a modification of the filtering system, a change of rules, a modification of the classification system, and combinations thereof.

3. The method of claim 1 wherein classification metadata is associated with each classification recommendation of the prioritized set of classification recommendations, the classification metadata providing an assessment of the relationship of a particular classification recommendation to the stored object.

4. The method of claim 1 wherein the metadata includes a component selected from the group consisting of content summarizations, statistical assessments, environmental and static metadata, information selected from the group consisting of object names, using context information, creation environment, and combinations thereof.

5. A method of reclassifying primary digital data without directly accessing the primary digital data, the method comprising:

for each of a plurality of data objects to be stored in a data storage system,

a) associating metadata with the data object,

b) storing the metadata in the data storage system,

c) associating a prioritized set of classification recommendations using the metadata associated with the data object, wherein the classification recommendations of the prioritized set are arranged in a prioritized list in which the recommendations are ranked from a classification most associated with the data object to a classification least associated with the data object based on a classification score associated with each of the recommendations and wherein the classification score provides an assessment of the relevance of a particular recommendation to the data object,

d) storing the prioritized set of classification recommendations associated with the data object,

e) re-determining the prioritized set of classification recommendations associated with the data object in response to the occurrence of an event requiring reevaluation of the data using the metadata without directly accessing the data object, and

f) storing the re-determined prioritized set of classification recommendations associated with the data object.

6. A digital data storage system comprising:

one or more data storage devices for physically storing digital data; and

a controller operable to, for each of a plurality of data objects,

a) associate metadata with the data object,

b) store the metadata in the data storage system,

c) use the metadata to create a prioritized set of classification recommendations associated with the data object, wherein the classification recommendations of the prioritized set are arranged in a prioritized list in which the recommendations are ranked from a classification most associated with the data object to a classification least associated with the data object based on a classification score associated with each of the recommendations and wherein the classification score provides an assessment of the relevance of a particular recommendation to the data object,

d) store the prioritized set of classification recommendations associated with the data object,

e) re-determine the prioritized set of classification recommendations associated with the data object in response to the occurrence of an event requiring reevaluation of the data using the metadata without directly accessing the data object, and

f) store the re-determined prioritized set of classification recommendations associated with the data object.

7. The digital data storage system of claim 6 wherein each classification score is reevaluated in step e).

8. The digital data storage system of claim 6 wherein the controller is further operable to arrange the prioritized set of classification recommendations in a tree structure.

9. The digital data storage system of claim 6 wherein the controller comprises one or more computer systems.

10. The digital data storage system of claim 9 wherein the one or more computer systems comprise a microprocessor-based system.

11. A method of classifying stored objects comprising:

for each of a plurality of objects to be stored in a storage system,

a) associating metadata with the object,

b) storing the metadata in a data storage system,

c) using the metadata to create a prioritized set of classification recommendations for the object, wherein the classification recommendations of the prioritized set are arranged in a prioritized list in which the recommendations are ranked from a classification most associated with the object to a classification least associated with the object based on a classification score associated with each of the recommendations and wherein the classification score provides an assessment of the relevance of a particular recommendation to the object,

d) storing the prioritized set of classification recommendations for the object,

e) selecting one of the classification recommendations associated with the object to be used as the object classification in the system,

f) re-determining the prioritized set of classification recommendations for the object in response to the occurrence of an event requiring reevaluation of the object using the stored prioritized set of classification recommendations for the object without directly accessing the object or the metadata, and

g) storing the re-determined prioritized set of classification recommendations associated with the object.

12. The method of claim 11 wherein the event requiring reevaluation comprises an event selected from the group consisting of the passage of a determinable period of time, a specific communication from outside the storage system, a failure of some resource, a modification of the filtering system, a change of rules, a modification of the classification system, and combinations thereof.