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function of index_matrix_to_pairs() is different from the comment? #13

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jiangchao123 opened this issue Sep 14, 2018 · 2 comments
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@jiangchao123
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jiangchao123 commented Sep 14, 2018

the comment is:[[3,1,2], [2,3,1]] -> [[[0, 3], [1, 1], [2, 2]], [[0, 2], [1, 3], [2, 1]]]

but when I test it, it output this:[[[0 3],[0 1],[0 2]],[[1 2],[1 3],[1 1]]]

this is test code:

with tf.Session():
,,,,,,,print index_matrix_to_pairs(tf.constant([[3,1,2], [2,3,1]])).eval()

@enockipp
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I have the same question

@enockipp
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should fix to follow?
def index_matrix_to_pairs(index_matrix):

[[3,1,2], [2,3,1]] -> [[[0, 3], [1, 1], [2, 2]],

[[0, 2], [1, 3], [2, 1]]]

replicated_first_indices = tf.range(tf.shape(index_matrix)[-1]) #[0, 1, 2]
rank = len(index_matrix.get_shape())
if rank == 2:
replicated_first_indices = tf.tile(
tf.expand_dims(replicated_first_indices, dim=0), #[[0, 1, 2]]
[tf.shape(index_matrix)[0], 1])
return tf.stack([replicated_first_indices, index_matrix], axis=rank)

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