Function for renormalising graph

[BBolosSierra]

Renormalising graph with the transition tau.

[cmclean5]

for (size_t i = 0; i < rho.n_rows; ++i) { for (size_t j = 0; j < rho.n_cols; ++j) {

  rho_tmp = rho(i, j)/std::min(rho(i, i), rho(j, j));
  if (rho_tmp - 1  >= 0){
    adj2(i, j) = 1;
  } else if (rho_tmp - 1 < 0){
    adj2(i, j) = 0;
  }
}

}

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// Perform the logic from code arma::uword i,j; int N = x.n_rows; double rho_temp, rho_ii, rho_jj;

arma::mat L1 = x; // Use the input matrix directly arma::mat rho = expmat(-tau * L1); double tr = arma::trace(rho); rho = rho / tr;

arma::mat adj2(N,N, fill::zeros);

for(i = 0; i < N; ++i) { rho_ii = rho.at(i,i);
for(j = 0; j < N; ++j) { rho_jj = rho.at(j,j); rho_tmp = rho.at(i, j)/std::min(rho_ii, rho_jj); if (rho_tmp - 1 >= 0){ adj2.at(i, j) = 1; }
} }

Not tested, for some reason I use ".at(i,j)" notation to get and assign elements to matrix.

[BBolosSierra]

[like] Begoña Bolos reacted to your message:

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From: colin mclean @.> Sent: Monday, December 18, 2023 2:06:09 PM To: BBolosSierra/InfoCoRe @.> Cc: Begoña Bolos @.>; Author @.> Subject: Re: [BBolosSierra/InfoCoRe] Function for renormalising graph (Issue #2)

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for (size_t i = 0; i < rho.n_rows; ++i) { for (size_t j = 0; j < rho.n_cols; ++j) {

rho_tmp = rho(i, j)/std::min(rho(i, i), rho(j, j)); if (rho_tmp - 1 >= 0){ adj2(i, j) = 1; } else if (rho_tmp - 1 < 0){ adj2(i, j) = 0; } }

}

int i, N = rho.n_rows; double rho_temp, rho_ii, rho_jj; mat adj2(N, N); adj2.zeros(); for(i = 0; i < N; ++i) { rho_ii = rho.at(i,i); for(j = 0; j < N; ++j) { rho_jj = rho.at(j,j); rho_tmp = rho.at(i, j)/std::min(rho_ii, rho_jj); if (rho_tmp - 1 >= 0){ adj2.at(i, j) = 1; } } } Not tested, but for some reason I use ".at(i,j)" notation to get and assign elements to matrix.

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