Research Article

Preprocessing Approach for Power Transformer Maintenance Data Mining Based on k-Nearest Neighbor Completion and Principal Component Analysis

Table 5

Evolution of imputed values.

 Exact valuesI-KNNI-meanI-multiple

H2808080,03468,664
CH4303030,38727,411
C2H4232331,0821,542
CO1210119011741490,549
CO2587056269159,4679581,353
N2649206492071206,67982476,217