Table 4 The weight of hidden and output layers for 16 neurons.

From: Prediction of speed of sound of deep eutectic solvents using artificial neural network coupled with group contribution approach

Neurons

Hidden layer

Output layer

Vc

w

Mw

T

1

− 2.24536

− 0.48558

1.098708

− 1.16422

0.630794

2

0.944691

− 2.52083

− 0.67325

0.373787

0.758028

3

− 1.01834

− 1.29702

1.427834

− 1.75557

0.977823

4

− 1.74537

1.232633

1.03008

− 1.4877

− 0.99896

5

1.276081

− 0.35078

− 1.66558

− 1.82055

0.730877

6

− 1.16913

1.762558

1.645331

0.812039

0.225133

7

− 0.31927

− 0.60319

2.715422

− 0.02673

0.9799

8

1.163699

1.667596

0.089376

− 1.92274

0.05536

9

− 0.93382

− 0.68464

2.549148

− 0.03313

− 0.04095

10

1.244022

1.623924

0.463342

− 1.85488

0.602695

11

− 0.47005

1.138715

− 1.54125

− 1.98668

− 0.54431

12

1.003801

− 0.67099

− 1.64259

1.919385

− 0.00381

13

1.557248

− 2.16729

− 0.7101

0.462178

0.801705

14

− 0.27949

1.406818

1.204804

2.081152

0.149322

15

− 1.77034

1.655671

1.199766

0.724712

0.690356

16

− 1.22579

− 1.24965

2.101388

0.599993

0.477281

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