mindspore.numpy.outer

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mindspore.numpy.outer(a, b)[source]

Computes the outer product of two vectors.

Given two vectors, a = [a0, a1, ..., aM] and b = [b0, b1, ..., bN], the outer product is:

[[a0*b0  a0*b1 ... a0*bN ]

[a1*b0    .              ]

[ ...          .         ]

[aM*b0            aM*bN ]]

Note

Numpy argument out is not supported. On GPU, the supported dtypes are np.float16, and np.float32. On CPU, the supported dtypes are np.float16, np.float32, and np.float64.

Parameters

  • a (Tensor) – first input vector. Input is flattened if not already 1-dimensional.

  • b (Tensor) – second input vector. Input is flattened if not already 1-dimensional.

Returns

Tensor or scalar, out[i, j] = a[i] * b[j].

Raises

TypeError – If the input is not a tensor.

Supported Platforms:

Ascend GPU CPU

Examples

>>> import mindspore.numpy as np
>>> a = np.full(7, 2).astype('float32')
>>> b = np.full(4, 3).astype('float32')
>>> output = np.outer(a, b)
>>> print(output)
[[6. 6. 6. 6.]
[6. 6. 6. 6.]
[6. 6. 6. 6.]
[6. 6. 6. 6.]
[6. 6. 6. 6.]
[6. 6. 6. 6.]
[6. 6. 6. 6.]]