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Theory and Modern Applications

Table 4 The convergence of Algorithm 3.1 with different σ

From: Novel forward–backward algorithms for optimization and applications to compressive sensing and image inpainting

Given: δ = 0.02, θ = 0.15, γ = 1.85, m = 80

γ

N = 1024, M = 512

N = 2048, M = 1024

CPU

Iter

CPU

Iter

0.1

13.2968

2228

26.7530

1765

1

14.3224

2069

39.0200

2177

10

19.6720

2428

54.4288

2624

100

21.7268

2261

49.6928

2165