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Squashing function #1

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Ugenteraan opened this issue Jun 26, 2018 · 0 comments
Open

Squashing function #1

Ugenteraan opened this issue Jun 26, 2018 · 0 comments

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@Ugenteraan
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Ugenteraan commented Jun 26, 2018

Line 17 in capsnet.py, shouldn't it be :
scalar_factor = vector_squared_norm / ((1 + vector_squared_norm) / tf.sqrt(vector_squared_norm + epsilon))
instead of
scalar_factor = vector_squared_norm / ((1 + vector_squared_norm) * tf.sqrt(vector_squared_norm + epsilon))
NOTE : changes from multiplication to division.
Because, from the paper, we have

(vector_squared_norm/1+vector_squared_norm) * (vector/sqrt(vector_squared_norm))

which means

((vector_squared_norm/1+vector_squared_norm)/vector_squared_norm)*vector

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