title: What is the threshold for "tf.matrix_inverse()" as singular matrix?
body: <p>I am using <code>tf.matrix_inverse()</code> to compute the inverse of matrix. Sometimes, the matrix is very close to singular but not singular. I wonder in Tensorflow what's the threshold (or how close determinant of matrix to 0) for <code>tf.matrix_inverse()</code> to define it's a "singular matrix"?</p>