Table 2. Binary classification labels.

Nodule’s types	Nodule type grading [binary label]	Quantities	Code name
Sphericity	123 [0]–45 [1]	441–985	Sph1
Lobulation	3 [0]–12 [1]	201–1,093	Lob1
	45 [0]–12 [1]	132–1,093	Lob2
	45 [0]–3 [1]	132–201	Lob3
Spiculation	3 [0]–12 [1]	127–1,177	Spi1
	45 [0]–12 [1]	122–1,177	Spi2
	45 [0]–3 [1]	122–127	Spi3
Texture	1 [0]–5 [1]	205–827	Tex1
	1 [0]–234 [1]	205–394	Tex2
	23 [0]–5 [1]	180–827	Tex3
	4 [0]–5 [1]	214–827	Tex4
Margin	3 [0]–12 [1]	186–309	Mar1
	12 [0]–45 [1]	309–931	Mar2
	3 [0]–45 [1]	186–931	Mar3
Calcification	345 [0]–6 [1]	114–1,312	Cal1
Malignancy	123 [0]–45 [1]	976–450	Mal1
Internal structure	–	–	–

A code name is a surrogate name for that classification in this article.