Table 4
Relative residual error of the RVs in percent after 50 training runs for the NNs using 540 000 starsim models for different time samplings and for different kinds and numbers of activity indices as input for ε Eri.
| Input index | uniform | random1 | gap1 | random2 | gap2 | average | with error |
|---|---|---|---|---|---|---|---|
| V | 19.9 | 20.7 | 18.7 | 21.3 | 20.3 | 20.2±0.4 | 23.8 |
| R | 22.4 | 22.9 | 21.4 | 23.7 | 23.0 | 22.7±0.3 | 26.0 |
| I | 23.9 | 24.7 | 24.2 | 25.5 | 24.7 | 24.6±0.2 | 27.5 |
| V-I | 8.6 | 9.5 | 8.6 | 9.9 | 8.8 | 9.1±0.2 | 22.4 |
| V-R-I | 8.7 | 9.6 | 8.5 | 10.0 | 8.8 | 9.1±0.2 | 22.0 |
| BIS | 17.0 | 19.3 | 18.8 | 19.7 | 18.2 | 18.6±0.4 | 19.1 |
| FWHM | 23.1 | 29.1 | 27.0 | 28.5 | 24.9 | 26.5±1.0 | 27.1 |
| CON | 12.6 | 12.4 | 10.4 | 13.1 | 12.0 | 12.1±0.4 | 20.6 |
| BIS-FWHM | 11.9 | 13.9 | 13.4 | 14.0 | 13.0 | 13.2±0.3 | 14.5 |
| BIS-CON | 6.5 | 7.8 | 6.1 | 7.8 | 7.2 | 7.1±0.3 | 9.1 |
| FWHM-CON | 7.5 | 7.9 | 6.6 | 8.7 | 7.8 | 7.7±0.3 | 10.8 |
| BIS-FWHM-CON | 5.1 | 5.8 | 5.5 | 6.5 | 5.9 | 5.8±0.2 | 7.5 |
| all 6 | 4.7 | 5.7 | 4.9 | 5.6 | 5.3 | 5.2±0.2 | 6.1 |
| time-BIS | 17.0 | 19.2 | 18.9 | 19.7 | 18.2 | 18.6±0.4 | 19.1 |
Notes. Column ‘average’ shows the average of all the values of the other time samplings and their standard deviation, ‘with error’ shows the RV RRE of the ‘uniform’ time sampling, where the additional RREs (see Table 2) are added to each index of the NN input data.
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