sam.hadow/pagerank
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arg max alpha

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Sam Hadow 2025-05-15 12:59:13 +02:00
parent e128df8724
commit 555bbae16c
1 changed files with 4 additions and 3 deletions
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main.py Normal file → Executable file
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@ -58,7 +58,7 @@ def generate_data(matrix_path, epsilon, alpha_values):
diff_norms = [] diff_norms = []
for alpha in alpha_values: for alpha in alpha_values:
print(f"Running for alpha={alpha:.3f}") print(f"Running for alpha={alpha:.6f}")
data = run_pagerank(matrix_path, epsilon, alpha) data = run_pagerank(matrix_path, epsilon, alpha)
if data: if data:
pagerank_iterations.append(data["pagerank_iterations"]) pagerank_iterations.append(data["pagerank_iterations"])
@ -67,7 +67,7 @@ def generate_data(matrix_path, epsilon, alpha_values):
gauss_seidel_times.append(data["gauss_seidel_time"]) gauss_seidel_times.append(data["gauss_seidel_time"])
diff_norms.append(data["diff_norm"]) diff_norms.append(data["diff_norm"])
else: else:
print(f"Skipping alpha={alpha:.3f} due to error") print(f"Skipping alpha={alpha:.6f} due to error")
pagerank_iterations.append(None) pagerank_iterations.append(None)
gauss_seidel_iterations.append(None) gauss_seidel_iterations.append(None)
pagerank_times.append(None) pagerank_times.append(None)
@ -111,11 +111,12 @@ def plot_curves(alpha_values, pagerank_iterations, gauss_seidel_iterations, page
def main(): def main():
parser = argparse.ArgumentParser(description='Pagerank vs Gauß Seidel execution time depending on α') parser = argparse.ArgumentParser(description='Pagerank vs Gauß Seidel execution time depending on α')
parser.add_argument('--alpha', type=int, default=10, help='number of alpha to test in the range (0,1)') parser.add_argument('--alpha', type=int, default=10, help='number of alpha to test in the range (0,1)')
parser.add_argument('--max_alpha', type=float, default=1, help='stay strictly below this alpha')
parser.add_argument('--epsilon', type=float, default=1e-7, help='epsilon value for the convergence') parser.add_argument('--epsilon', type=float, default=1e-7, help='epsilon value for the convergence')
parser.add_argument('--matrix', type=str, default="out/input.mtx", help='path to the matrix file') parser.add_argument('--matrix', type=str, default="out/input.mtx", help='path to the matrix file')
args = parser.parse_args() args = parser.parse_args()
alpha_values = np.arange(0, 1, (1/args.alpha)) alpha_values = np.arange(0, args.max_alpha, (1/args.alpha))
(pagerank_iterations, gauss_seidel_iterations, pagerank_times, gauss_seidel_times, diff_norms) = generate_data(args.matrix, args.epsilon, alpha_values) (pagerank_iterations, gauss_seidel_iterations, pagerank_times, gauss_seidel_times, diff_norms) = generate_data(args.matrix, args.epsilon, alpha_values)
plot_curves(alpha_values, pagerank_iterations, gauss_seidel_iterations, pagerank_times, gauss_seidel_times, diff_norms) plot_curves(alpha_values, pagerank_iterations, gauss_seidel_iterations, pagerank_times, gauss_seidel_times, diff_norms)