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  • Pyro Discussion Forum
    Forum For Pyro Developers
  • numpyro - Pyro Discussion Forum
    Forum For Pyro Developers
  • Use of LogNormal in Numpyro - Pyro Discussion Forum
    Hi everyone, I am very new to Numpyro and hierarchical modeling Recently I have been trying to build a hierarchical model where I have a hyper-prior (theta_group) which should be centered around 1 and strictly positive There is another prior (theta_part) which should be centered around theta_group I am trying to use LogNormal as priors for both: theta_group = numpyro sample("theta_group
  • Confusion regarding batch_shapes, event_shapes, independence
    Dear all, I am quite new to pyro and I am struggling a bit to undestand the relationships between event_shapes and batch_shapes, dependence and independence, and how this information is shared between different objects in pyro I have read the “Tensor shapes in pyro” article as well as “Reasoning about shapes and probability” and the relevant doc entries (like e g for pyro plate
  • Understanding factor vs sample - Pyro Discussion Forum
    i suggest looking at the code: pyro pyro primitives py at 455f7b3b8b21f8e93a96235fc6bd58cb60f8a3fa · pyro-ppl pyro · GitHub factor is basically a particular kind of sample statement with a provided log_prob for the observation
  • Implementation normalizing flow in matrix normal distribution
    Hi, I’m working on a model where the likelihood follows a matrix normal distribution, X ~ MN_{n,p} (M, U, V) I’m using conjugate priors: M ~ MN U ~ Inverse Wishart V ~ Inverse Wishart As a result, I believe the posterior distribution should also follow a matrix normal distribution Is there a way to implement the matrix normal distribution in Pyro? If I replace the conjugate priors with
  • Variational Inference for Dirichlet process clustering - Pyro . . .
    Hi there! This is my first time using Pyro so I am very excited to see what I can built with it 🙂 Specifically, I am trying to do finite Dirichlet Process clustering with Variational Inference I want to generalize this into a Chinese Restaurant Process involving an “infinite” number of states But for now, I am just generating 1-D data from 3 Gaussians with proportions given by a
  • Dependency tracking in Pyro - Tutorials - Pyro Discussion Forum
    A Pyro program shares batch dimensions (-1, -2) across the whole program (across different sample statements) Variables assigned to different dimensions (ie -1 and -2 are considered independent), but within a single dimension (-2), the variables in there (the size of the dimension) are dependent unless further annotated
  • Simple graphical model example to understand plates - Pyro Discussion Forum
    I read through Tensor shapes in Pyro — Pyro Tutorials 1 8 4 documentation to understand better what’s happening with dim and nested plates Rather that starting off with dim=-2, I just changed the shape of the mini batch, to match what happens in the model





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