Table 26 Comparison of actual value and predicted value of \(R\lambda _2(G)\) for different \((Cz-Dpp)\) structures.

From: Data-driven analysis of chemical graph of carbazole and diketopyrrolopyrrole

Index

First Zagreb

Actual value

Prediction value

Error

Absolute error

% Error

1

320

140

140.0071152

\(-\)0.0071152

0.0071152

5.09E-05

2

514

230

230.0130839

\(-\)0.013083926

0.013083926

5.69E-05

3

708

320

320.0149729

\(-\)0.014972909

0.014972909

4.67E-05

4

902

410

410.0084013

\(-\)0.008401319

0.008401319

2.05E-05

5

1096

500

499.9889883

0.011011674

0.011011674

2.20E-05

6

1290

590

589.9523531

0.0476469

0.0476469

8.09E-05

7

1484

680

679.8941148

0.10588519

0.10588519

1.56E-04

8

1678

770

769.8098926

0.190107375

0.190107375

2.47E-04

9

1872

860

859.6953057

0.304694285

0.304694285

3.54E-04

10

2066

950

949.5459733

0.45402675

0.45402675

4.77E-04