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Table 4 Comparison of time consumed (seconds) in the GIST1M dataset. We utilize 50,000 GIST to train hashing functions, and map 1 million GIST to 128-bit binary code during the online encoding procedure

From: Minimal residual ordinal loss hashing with an adaptive optimization mechanism

 

Our method

OCH

KMH

ITQ

LSH

WhRank

QRank

Online encoding

8.5

8.0

46.0

8.3

8.1

8.4

58.6

Offline training

1861

1572

1382

75

2

569

1183