1. A method, comprising: calculating a degree of significance of nodes in a network, respectively, based on one or more significance factors; determining one or more significant nodes based on the calculated degree of significance; determining a nodal region in the network that has deteriorated network health; correlating the nodal region with the one or more significant nodes; based on the correlation, identifying one or more significant nodes in the nodal region; selecting the identified one or more significant nodes in the nodal region to apply a Learning Machine (LM) technique; and in response to selecting the identified one or more significant nodes, applying the LM technique to the selected significant nodes to improve network health of the nodal region.