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| ``mx.symbol.linalg_sumlogdiag`` |
| ============================================================== |
| |
| Description |
| ---------------------- |
| |
| Computes the sum of the logarithms of the diagonal elements of a square matrix. |
| Input is a tensor *A* of dimension *n >= 2*. |
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| If *n=2*, *A* must be square with positive diagonal entries. We sum the natural |
| logarithms of the diagonal elements, the result has shape (1,). |
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| If *n>2*, *sumlogdiag* is performed separately on the trailing two dimensions for all |
| inputs (batch mode). |
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| .. note:: The operator supports float32 and float64 data types only. |
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| **Example**:: |
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| Single matrix reduction |
| A = [[1.0, 1.0], [1.0, 7.0]] |
| sumlogdiag(A) = [1.9459] |
| |
| Batch matrix reduction |
| A = [[[1.0, 1.0], [1.0, 7.0]], [[3.0, 0], [0, 17.0]]] |
| sumlogdiag(A) = [1.9459, 3.9318] |
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| Usage |
| ---------- |
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| .. code:: r |
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| mx.symbol.linalg_sumlogdiag(...) |
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| Arguments |
| ------------------ |
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| +----------------------------------------+------------------------------------------------------------+ |
| | Argument | Description | |
| +========================================+============================================================+ |
| | ``A`` | NDArray-or-Symbol. | |
| | | | |
| | | Tensor of square matrices | |
| +----------------------------------------+------------------------------------------------------------+ |
| | ``name`` | string, optional. | |
| | | | |
| | | Name of the resulting symbol. | |
| +----------------------------------------+------------------------------------------------------------+ |
| |
| Value |
| ---------- |
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| ``out`` The result mx.symbol |
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| Link to Source Code: http://github.com/apache/incubator-mxnet/blob/1.6.0/src/operator/tensor/la_op.cc#L445 |
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