Health Diagnosis of Roadheader Based on Reference Manifold Learning and Improved K-Means

Table 4

Health evaluation indicator (HEI) of each time point.

Day	3rd	6th	9th	11th	13th	14th	15th	16th	17th	AM18th	BM18th	AM19th
HEI (CH)	13.28	14.41	18.98	22.97	15.45	24.34	29.08	38.15	50.43	99.2	143.17	297.87