Table 7 Comparison of actual and predicted values of \(R\lambda _1(G)\) for different \((Cz\text {-}Dpp)\) 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

182

182.000109

\(-\)0.000109

0.000109

5.99E-05

2

514

255

255.000175

\(-\)0.000175

0.000175

6.86E-05

3

708

328

328.000241

\(-\)0.000241

0.000241

7.35E-05

4

902

401

401.000307

\(-\)0.000307

0.000307

7.66E-05

5

1096

474

474.000373

\(-\)0.000373

0.000373

7.87E-05

6

1290

547

547.000439

\(-\)0.000439

0.000439

8.03E-05

7

1484

620

620.000505

\(-\)0.000505

0.000505

8.15E-05

8

1678

693

693.000571

\(-\)0.000571

0.000571

8.24E-05

9

1872

766

766.000637

\(-\)0.000637

0.000637

8.31E-05

10

2066

839

839.000703

\(-\)0.000703

0.000703

8.38E-05