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Table 1 The brief descriptions and quantization of features used in this study

From: A new fruit fly optimization algorithm enhanced support vector machine for diagnosis of breast cancer based on high-level features

Feature Brief description Quantization
X1 Age <=40: 1; > 40: 2
X2 Locality unilateral: 1; bilateral: 2
X3 Boundary clear: 1; not clear: 2; obscure: 3
X4 Calcification no: 1; yes: 2
X5 Cystic no: 1; yes: 2
X6 Nucleus/cytoplasm ratio(N/C) low: 1; medium: 2; high: 3
X7 Nucleolus size small: 1; big: 2
X8 Nucleolus number Single: 1; Multi: 2
X9 Cell density low: 1; medium: 2; high: 3
X10 Presence of fiber focal no: 1:; yes: 2
X11 Inflammatory cell infiltration few: 1; more: 2; many: 3
X12 Infiltration of the gland no: 1; yes: 2
X13 Perineural invasion no: 1; yes: 2
X14 Glands clearance around no: 1; yes: 2