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fix: keep power iteration relative error nonnegative #15465

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fix: keep power iteration relative error nonnegative #15465

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2 changes: 1 addition & 1 deletion linear_algebra/src/power_iteration.py
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Original file line number Diff line number Diff line change
Expand Up @@ -67,7 +67,7 @@ def power_iteration(
lambda_ = np.dot(vector_h, np.dot(input_matrix, vector))

# Check convergence.
error = np.abs(lambda_ - lambda_previous) / lambda_
error = np.abs(lambda_ - lambda_previous) / np.abs(lambda_)
iterations += 1

if error <= error_tol or iterations >= max_iterations:
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