A Blockchain-Integrated Divided-Block Sparse Matrix Transformation Differential Privacy Data Publishing Model

Table 3

Cumulative contribution percentage of eigenvalues of the tradition QR decomposition Householder transform and sparse matrix transform.

Cumulative number of principal components	Sparse matrix transforms (%)	Householder transform (%)
1	62.62	56.62
2	74.53	68.22
3	80.12	75.04
4	85.14	80.95
5	89.73	85.78
6	92.50	90.07
7	95.12	93.49