Top: ratio of L_{3.3 μm PAH} to L_{IR 24} as a function of L_{IR 24}. The 3.3 μm PAH emission is measured from the AKARI spectra extracted with the aperture that covers ∼95% of the total flux in the AKARI 2D spectra. We use L_{IR 24} to denote the total infrared luminosity, scaled by the flux ratio of the Spitzer/MIPS 24 μm emission within the AKARI aperture to the total 24 μm flux (see Sect. 4.3 for more details). The sources with the detected emission feature are shown by the circles. The small gray circles denote the values without the dust extinction correction. The large circles are color-coded by the AGN fraction. The green squares represent the sources with PAH_{3.3 μm} EQW < 0.04 μm and PAH _{6.2 μm} EQW ≥ 0.4 μm. Bottom: ratio of measured (gray) and corrected (colored) Brα to the infrared luminosity as a function of L_{IR 24}. The horizontal orange solid line and shaded area indicate the mean and its standard deviation of the extinction corrected L_Brα/L_{IR 24}, respectively. The horizontal black dashed line indicates L_Brα/L_IR = 1.56 × 10⁻⁴ when the SFRs derived from L_Brα and L_{IR 24} are the same.