inner

paddle. inner ( x: Tensor, y: Tensor, name: str | None = None ) → Tensor [source]

Inner product of two input Tensor.

Ordinary inner product for 1-D Tensors, in higher dimensions a sum product over the last axes.

Parameters

• x (Tensor) – An N-D Tensor or a Scalar Tensor. If its not a scalar Tensor, its last dimensions must match y’s.

• y (Tensor) – An N-D Tensor or a Scalar Tensor. If its not a scalar Tensor, its last dimensions must match x’s.

• name (str|None, optional) – Name for the operation (optional, default is None). For more information, please refer to api_guide_Name.

Returns

The inner-product Tensor, the output shape is x.shape[:-1] + y.shape[:-1].

Return type

Tensor

Examples

>>> import paddle >>> x = paddle.arange(1, 7).reshape((2, 3)).astype('float32') >>> y = paddle.arange(1, 10).reshape((3, 3)).astype('float32') >>> out = paddle.inner(x, y) >>> print(out) Tensor(shape=[2, 3], dtype=float32, place=Place(cpu), stop_gradient=True, [[14. , 32. , 50. ],  [32. , 77. , 122.]])