Table 1

Topological indices used to measure the structural difference between RNAs in RDMAS.

Topological index

Description

λ_T

Second eigenvalue of Laplacian matrix of Shapiro's coarse grained RNA tree

Second eigenvalue of Laplacian matrix of Shapiro's weighted coarse grained RNA tree

⁰χ

Zero-order Randiæ index defined on Shapiro's coarse grained RNA tree

¹χ

First-order Randiæ index defined on Shapiro's coarse grained RNA tree

²χ

Second-order Randiæ index defined on Shapiro's coarse grained RNA tree

⁰χ^w

Zero-order Randiæ index defined on Shapiro's weighted coarse grained RNA tree

¹χ^w

First-order Randiæ index defined on Shapiro's weighted coarse grained RNA tree

²χ^w

Second-order Randiæ index defined on Shapiro's weighted coarse grained RNA tree

W

Wiener index defined on Shapiro's coarse grained RNA tree

W^w

Wiener index defined on Shapiro's weighted coarse grained RNA tree

J

Balaban index defined on Shapiro's coarse grained RNA tree

J^w

Balaban index defined on Shapiro's weighted coarse grained RNA tree

Shu et al. BMC Bioinformatics 2006 7:404   doi:10.1186/1471-2105-7-404