jiang1st commented on issue #6968: Is mxnet symbol support conditional control flow? URL: https://github.com/apache/incubator-mxnet/issues/6968#issuecomment-359416026 Hi, I am new to mxnet. Now I want to add some conditional control in my network. I notice that sym.where can do this work by: ``` f_x = a - b f_y = a + b result = mx.sym.where(condition=gt, f_x, f_y) ``` I am curious to know, in the above example, if the condition is true, will f_y=a+b be executed ? (maybe f_y is executed but the result will not be returned? ) I read the example of tensorflow, the explanation is quite clear: ``` z = tf.multiply(a, b) result = tf.cond(x < y, lambda: tf.add(x, z), lambda: tf.square(y)) ``` > If x < y, the tf.add operation will be executed and tf.square operation will not be executed. So, is mx.sym.where equivalent to tf.cond? Thanks.
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