A residual-shell construction yields a tighter, computationally cheap lower bound for Ollivier-Ricci curvature that works for both 1-hop and k-hop random walks.
Ricci curvature of metric spaces
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A Residual-Shell-Based Lower Bound for Ollivier-Ricci Curvature
A residual-shell construction yields a tighter, computationally cheap lower bound for Ollivier-Ricci curvature that works for both 1-hop and k-hop random walks.