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   $x as cntk.variable,
   $initial-state as cntk.variable,
   $time-step as Number,
   $name as String
) as cntk.function


This function combines past_value() and future_value() into a single function. This is useful when the time_step is computed and can be positive, negative, or 0.

$x The tensor (or its name) from which the past value is obtained.
$initial-state Tensor or scalar representing the initial value to be used when the input tensor is shifted in time.
$time-step The number of time steps to look into the past, where negative values mean to look into the future, and 0 means a no-op (default 1).
$name The name of the function instance in the network.

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