INNER CODE UNIT · Python

cdf_delta

nv-tlabs/ATISS · scene_synthesis/losses/__init__.py:84

    cdf_delta = cdf_plus - cdf_min

    mid_in = inv_stdv * centered_y
    # log probability in the center of the bin, to be used in extreme cases
    # (not actually used in our code)
    log_pdf_mid = mid_in - log_scales - 2. * F.softplus(mid_in)

    # tf equivalent
    """
    log_probs = tf.where(x < -0.999, log_cdf_plus,
                         tf.where(x > 0.999, log_one_minus_cdf_min,
                                  tf.where(cdf_delta > 1e-5,
                                           tf.log(tf.maximum(cdf_delta, 1e-12)),
                                           log_pdf_mid - np.log(127.5))))
    """
    # TODO: cdf_delta <= 1e-5 actually can happen. How can we choose the value
    # for num_classes=65536 case? 1e-7? not sure..
    inner_inner_cond = (cdf_delta > 1e-5).float()

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