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How to use the adaptive.learner.triangulation.fast_det function in adaptive

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python-adaptive / adaptive / adaptive / learner / learnerND.py View on Github

def volume(simplex, ys=None):
    # Notice the parameter ys is there so you can use this volume method as
    # as loss function
    matrix = np.subtract(simplex[:-1], simplex[-1], dtype=float)

    # See https://www.jstor.org/stable/2315353
    dim = len(simplex) - 1
    vol = np.abs(fast_det(matrix)) / np.math.factorial(dim)
    return vol