Security and Communication Networks

Research Article

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

Table 6

Comparison of operation time consumption using Householder transform and sparse matrix transform on Residential Building dataset.
Dimensionality reduction programOperation time consumption (seconds)
Householder4.76 × 10−1s
Divided-block sparse matrix transformation2.17 × 10−1s