P(t) = e^{-\tau L}\), where \(-L = -(I - T)\) is the generator of the
  continuous-time random walk (Markov chain) corresponding to the
  discrete-time transition matrix \(T=\)<code>Pi</code>.</p>
    </div>
    <div id="references">
    <h2>References</h2>
    <p>De Domenico, M. (2017). Diffusion Geometry Unravels the Emergence of
  Functional Clusters in Collective Phenomena. Physical Review Letters.
  <a href="https://doi.org/10.1103/PhysRevLett.118.168301" class="external-link">doi:10.1103/PhysRevLett.1