Figure 6.
Performance evaluation of stellar atmospheric parameters (Teff, |$\log \, g$|, [Fe/H]) estimated by SPEMR on spectra with different S/N. The S/N intervals are |$\rm 10 \le S/N \lt 20$|, |$\rm 20 \le S/N \lt 40$|, |$\rm 40 \le S/N \lt 60$|, and |$\rm 60 \le S/N \lt 100$|, respectively. The vertical axis presents the distribution of differences between SPEMR predictions and ASPCAP results on the test set.