Before revision:  The validity and accuracy of the model are justified by Monte Carlo network simulations through the analysis of information propagation in scale-free and Erdos-Renyi  networks.
After revision:  The validity and accuracy of the model are justified by Monte Carlo network simulations through the analysis of information propagation in scale-free and Erdos-Renyi networks. It has been found that the developed model provides more accurate results compared to the widely used network-based SI mean-field model, especially in sparse networks.