  Topological index is a numerical value associated with chemical constitution
for correlation of chemical structure with various physical properties,
chemical reactivity or biological activity. In this work, some new indices
based on neighbourhood degree sum of nodes are proposed. To make the
computation of the novel indices convenient, an algorithm is designed. QSPR
analysis of these newly introduced indices are studied here which reveals their
predicting power. Some mathematical properties of these indices are also
discussed here.
