Table 3 Quality of prediction of mineral indexes by bulk-rock chemistry, testing set. Percent of coincindence.

From: Approach of automatic 3D geological mapping: the case of the Kovdor phoscorite-carbonatite complex, NW Russia

 

C

M

A

F

Mineral norms

51

56

61

46

Multiple regression

44

51

49

44

Neural network

66

61

62

61

Logical evaluation

68

61

61

55

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