# speedy-slice: Speedy slice sampling.

Speedy slice sampling.

This implementation of the slice sampling algorithm uses `lens`

as a means to
operate over generic indexed traversable functors, so you can expect it to
work if your target function takes a list, vector, map, sequence, etc. as its
argument.

Additionally you can sample over anything that's an instance of both `Num`

and
`Variate`

, which is useful in the case of discrete parameters.

Exports a `mcmc`

function that prints a trace to stdout, a `chain`

function
for collecting results in memory, and a `slice`

transition operator that can
be used more generally.

import Numeric.MCMC.Slice import Data.Sequence (Seq, index, fromList) bnn :: Seq Double -> Double bnn xs = -0.5 * (x0 ^ 2 * x1 ^ 2 + x0 ^ 2 + x1 ^ 2 - 8 * x0 - 8 * x1) where x0 = index xs 0 x1 = index xs 1 main :: IO () main = withSystemRandom . asGenIO $ mcmc 10000 1 (fromList [0, 0]) bnn

## Downloads

- speedy-slice-0.3.2.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)

Versions [RSS] | 0.1.0.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.1.5, 0.2.0, 0.3.0, 0.3.1, 0.3.2 |
---|---|

Dependencies | base (>=4 && <6), kan-extensions (>=5 && <6), lens (>=4 && <6), mcmc-types (>=1.0.1), mwc-probability (>=1.0.1), pipes (>=4 && <5), primitive (>=0.6 && <1.0), transformers (>=0.5 && <1.0) [details] |

License | MIT |

Author | Jared Tobin |

Maintainer | jared@jtobin.ca |

Category | Math |

Home page | http://github.com/jtobin/speedy-slice |

Source repo | head: git clone http://github.com/jtobin/speedy-slice.git |

Uploaded | by JaredTobin at 2021-02-21T07:49:28Z |

Distributions | LTSHaskell:0.3.2, NixOS:0.3.2, Stackage:0.3.2 |

Downloads | 5621 total (27 in the last 30 days) |

Rating | (no votes yet) [estimated by Bayesian average] |

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Status | Docs available [build log] Last success reported on 2021-02-21 [all 1 reports] |