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Fix link and typo in developer_guide.md #7219

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9f032c9
Fix link and typo in developer_guide.md
pipme Mar 26, 2024
d9efe32
Update docs/source/contributing/developer_guide.md
pipme Mar 28, 2024
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6 changes: 3 additions & 3 deletions docs/source/contributing/developer_guide.md
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Expand Up @@ -542,10 +542,10 @@ There are some example in the ``CompoundStep`` doc:
The base class for most MCMC sampler (except SMC) is in [ArrayStep](https://github.com/pymc-devs/pymc/blob/main/pymc/step_methods/arraystep.py).
You can see that the ``step.step()`` is mapping the ``point`` into an array, and call ``self.astep()``, which is an array in, array out function.
A PyMC model compiles a conditional logp/dlogp function that replace the input RVs with a shared 1D tensor (flatten and stack view of the original RVs).
And the transition kernel (i.e., ``.astep()``) takes an array as input and output an array.
See for example in the [MH sampler](https://github.com/pymc-devs/pymc/blob/6d07591962a6c135640a3c31903eba66b34e71d8/pymc/step_methods/metropolis.py#L139-L173).
And the transition kernel (i.e., ``.astep()``) takes an array as input and outputs an array.
For example, see the [MH sampler](https://github.com/pymc-devs/pymc/blob/89f6fcf751774fb50016561dc448a87fba7ed3aa/pymc/step_methods/metropolis.py#L235-L289).

This is of course very different compare to the transition kernel in e.g. TFP, which is a tenor in tensor out function.
This is of course very different compared to the transition kernel in e.g. TFP, which is a tenor in tensor out function.
Moreover, transition kernels in TFP do not flatten the tensors, see eg docstring of [tensorflow\_probability/python/mcmc/random\_walk\_metropolis.py](https://github.com/tensorflow/probability/blob/master/tensorflow_probability/python/mcmc/random_walk_metropolis.py):

```python
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