PATENT CLAIM ANALYSIS

Application Number: 15877566
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-07
Patent Classification: ["711", "154000"]

Abstract:
Deduplication of virtual-machine disk images and other disk images can involve identifying the first clusters in a file. The clusters are hashed. The first-in-file hashes (generated from first-in-file clusters) are stored in an in-memory index, while the full set of hashes is streamed in order to find matches with the hashes stored in the in-memory index. First-in-file hashes in the stream are compared, while other hashes in the stream are compared only if the immediately preceding hash resulted in a match. Comparing non-first-in-file hashes requires disk accesses, but since such comparisons are conditioned on first-in-file matches, there are relatively likely to result in sequences of matches. The net effect is a relatively fast deduplication with compression approaching that resulting from a full comparison of all hashes.

Claim (Index 15):
The system of  claim 14  further comprising, prior to selecting seed clusters, installing an agent that identifies clusters that contain a file start, the disk image being a virtual-machine disk image of the virtual machine.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 86.0
- Lexical Diversity: 1.81579
- Patent Class: 711.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15614540', '15449934', '12797778', '15877584', '14734232']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4463064997261514
- 35 USC 102 Novelty (BERT): 0.495677280435392
- Combined Prediction Score: 0.4512435777970755
- Mean Citation Score: 168.350154
- Max Citation Score: 196.87213
- Similarity Product: 132.37217290201903

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test