Improved KNN Algorithm Based on Preprocessing of Center in Smart Cities

Table 3

Test results of classification accuracy.

Number of deletions	Number of tests	Number of classification accuracies higher than 50%	Number of classification accuracies lower than 50%
400	100	80	20
410	100	87	13
420	100	72	28
430	100	92	8
440	100	75	25
450	100	96	4
460	100	89	11
470	100	87	13
480	100	91	9
490	100	89	11
500	100	77	23