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| |
| ``mx.nd.random.pdf.negative.binomial`` |
| ============================================================================ |
| |
| Description |
| ---------------------- |
| |
| Computes the value of the PDF of samples of |
| negative binomial distributions with parameters *k* (failure limit) and *p* (failure probability). |
| |
| *k* and *p* must have the same shape, which must match the leftmost subshape |
| of *sample*. That is, *sample* can have the same shape as *k* and *p*, in which |
| case the output contains one density per distribution, or *sample* can be a tensor |
| of tensors with that shape, in which case the output is a tensor of densities such that |
| the densities at index *i* in the output are given by the samples at index *i* in *sample* |
| parameterized by the values of *k* and *p* at index *i*. |
| |
| |
| **Example**:: |
| |
| |
| random_pdf_negative_binomial(sample=[[1,2,3,4]], k=[1], p=a[0.5]) = |
| [[0.25, 0.125, 0.0625, 0.03125]] |
| |
| # Note that k may be real-valued |
| sample = [[1,2,3,4], |
| [1,2,3,4]] |
| random_pdf_negative_binomial(sample=sample, k=[1, 1.5], p=[0.5, 0.5]) = |
| [[0.25, 0.125, 0.0625, 0.03125 ], |
| [0.26516506, 0.16572815, 0.09667476, 0.05437956]] |
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| |
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| Arguments |
| ------------------ |
| |
| +----------------------------------------+------------------------------------------------------------+ |
| | Argument | Description | |
| +========================================+============================================================+ |
| | ``sample`` | NDArray-or-Symbol. | |
| | | | |
| | | Samples from the distributions. | |
| +----------------------------------------+------------------------------------------------------------+ |
| | ``k`` | NDArray-or-Symbol. | |
| | | | |
| | | Limits of unsuccessful experiments. | |
| +----------------------------------------+------------------------------------------------------------+ |
| | ``is.log`` | boolean, optional, default=0. | |
| | | | |
| | | If set, compute the density of the log-probability instead | |
| | | of the | |
| | | probability. | |
| +----------------------------------------+------------------------------------------------------------+ |
| | ``p`` | NDArray-or-Symbol. | |
| | | | |
| | | Failure probabilities in each experiment. | |
| +----------------------------------------+------------------------------------------------------------+ |
| |
| Value |
| ---------- |
| |
| ``out`` The result mx.ndarray |
| |
| |
| Link to Source Code: http://github.com/apache/incubator-mxnet/blob/1.6.0/src/operator/random/pdf_op.cc#L310 |
| |
