Performance analysis of different accretion-disk models in SED fitting: The models shown are the semi-empirical R06 (upper panel), the semi-empirical with emission lines THB21 (central upper panel), the theoretical α-disk SN12 (central lower panel), and the theoretical three-component KD18 model (lower panel). The left panel shows the histograms of the logarithm of the likelihood values corresponding to each model and the dashed line in each plot indicates the median value of the distribution. Residuals from the best fits for each active galaxy of the sample are shown in the right panel. The effect of overlapped emission lines, such as the doublet of [N II] λλ 6549,6585 Å and H α λ 6563 Å, is large, reducing residuals to about zero. The dash-dotted line indicates the 0.65 μm broad emission lines feature and the dashed lines show the limits of 0σ, 3σ, and −3σ.