chainer.functions.mean¶
-
chainer.functions.
mean
(x, axis=None, weights=None, keepdims=False)[source]¶ Calculate weighted average of array elements over a given axis.
Parameters: - x (Variable) – Elements to sum.
- axis (None or int or tuple of int) – Axis which the method is performed. With the default (axis = None) it performs a mean over all the dimensions of the input array.
- weights (None or chainer.Variable) – An array holding weights to
calculate weighted average. If it is
None
, all weights are assumed to be one. Whenaxis
isNone
,weights
must have the same shape ofx
. And whenaxis
isint
, it must be 1-D array satisfingweights.shape == (x.shape[axis],)
. - keepdims (bool) – If
True
, the specified axes are remained as axes of length one.
Returns: Output variable.
Return type: