Journal of Engineering and Applied Science

Table 7 Accuracy of model NBC-I

From: Grading assessment of steel bar corrosion in concrete structures based on naive Bayesian model and spontaneous magnetic flux leakage effect

Rebar condition	Rust grade	Rust rate α	β range	Correct number	Accuracy
No rust	1	0≤α<0.02	0≤β<0.02	0	100.0%
Slight rust	2	0.02≤α<0.1	0.02≥β<1	10	83.3%
Moderate rust	3	0.1≤α<0.2	1≥β<3	14	77.8%
Severe rust	4	0.2≤α≤1	β≥3	20	83.3%
Total				44	81.5%

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