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Table 1 Computational results for Example 5.1 with \(\pmb{(N,M)=(100,50)}\)

From: Simultaneous and semi-alternating projection algorithms for solving split equality problems

J

50

100

150

200

250

Algorithm 1.1

Iter.

3263

90,378

297,135

65,795

31,655

Inlt.

13,748

377,483

864,321

172,925

82,979

Sec.

2.188

36.672

110.563

25.500

13.781

Algorithm 1.2

Iter.

8732

194,940

434,539

82,993

43,689

Inlt.

46,182

1,069,758

1,327,537

225,913

141,813

Sec.

6.797

106.234

189.078

38.094

23.422

Algorithm 1.3

Iter.

336

2012

4302

1327

676

Sec.

0.063

0.406

1.125

0.406

0.219

FISTA

Iter.

1389

2580

3787

3260

2491

Inlt.

1397

2589

3796

3270

2501

Sec.

0.391

0.453

0.734

0.656

0.563

Algorithm 3.1(I)

Iter.

199

793

4342

482

718

Inlt.

254

913

5206

1145

1148

Sec.

0.094

0.156

0.953

0.156

0.188

Algorithm 3.1(II)

Iter.

152

764

2176

580

697

Inlt.

184

860

2232

604

769

Sec.

0.078

0.219

0.406

0.125

0.125

Algorithm 3.2(I)

Iter.

81

2208

5704

1022

362

Inlt.

178

4680

7562

2261

846

Sec.

0.063

0.469

1.891

0.250

0.094

Algorithm 3.2(II)

Iter.

65

952

2311

629

263

Inlt.

80

976

2375

653

288

Sec.

0.031

0.188

0.516

0.156

0.063