package prbnmcn-dagger

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in-package search v0.2.0

prbnmcn-dagger
- Dagger
  - Dist
  - Internal
    
    Cps_monad
    
    Make
    
    Infix
    
    M
    
    Infix
    
    R
    
    Identity_monad
    
    M
    
    Infix
  - Intf
    
    Core
    
    Infix
    
    Field
    
    Foldable
    
    Infix
    
    S
    
    Array_ops
    
    Infix
    
    List_ops
    
    Seq_ops
  - Lmh_incremental_inference
    
    Array_ops
    
    Infix
    
    List_ops
    
    Make_shared
    
    C
    
    Seq_ops
  - Lmh_inference
    
    Array_ops
    
    Infix
    
    List_ops
    
    Seq_ops
  - Log_space
  - RNG
  - Resampling
    
    Make_predefined
    
    F
    
    Sampler
    
    Particles
  - Smc_inference
    
    Float_smc
    
    Array_ops
    
    Infix
    
    List_ops
    
    Seq_ops
    
    Make
    
    Array_ops
    
    Infix
    
    List_ops
    
    Resampling_types
    
    Seq_ops
    
    Resampling_types_S
    
    S
    
    Array_ops
    
    Infix
    
    List_ops
    
    Seq_ops
    
    Unit_smc
    
    Array_ops
    
    Infix
    
    List_ops
    
    Seq_ops

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Lightweight Metropolis-Hastings

include Intf.S

type 'a t

'a t is the type of computations of type 'a

val return : 'a -> 'a t

return x injects a value x as a computation

val bind : 'a t -> ('a -> 'b t) -> 'b t

Monadic bind

val map : 'a t -> ('a -> 'b) -> 'b t

Functorial map

val map2 : 'a t -> 'b t -> ('a -> 'b -> 'c) -> 'c t

Applicative structure

val map_array : 'a t array -> ('a array -> 'b) -> 'b t

N-ary applicative structure

val if_ : bool t -> (bool -> 'a t) -> 'a t

If-then-else, mostly useful for monads featuring incremental computation. Allows to efficiently bind on a boolean computation.

module Infix : Intf.Infix with type 'a t := 'a t

val sample : 'a Dist.t -> 'a t

sample dist builds a computation that samples from dist. Note that dist must be a pure computation.

val samplei : 'a Dist.t t -> 'a t

samplei dist is similar to sample except that dist can be an impure computation (ie computing the distribution can involve sampling from other distributions).

val map_score : 'a t -> ('a -> float) -> 'a t

map_score m f behaves similarly to m except that the associated computation will be reweighted according to the result of evaluating f on the value of m.

val map_log_score : 'a t -> ('a -> Log_space.t) -> 'a t

Same as map_score excepts that a log-space likelihood is expected.

val score : float -> unit t

score s reweights the computation by s.

raises Invalid_arg
if s < 0

val log_score : Log_space.t -> unit t

log_score behaves as score except that a log-space weight is expected.

module List_ops : Intf.Foldable with type 'a t = 'a list and type 'a m := 'a t

module Array_ops : 
  Intf.Foldable with type 'a t = 'a array and type 'a m := 'a t

module Seq_ops : Intf.Foldable with type 'a t = 'a Seq.t and type 'a m := 'a t

val stream_samples : 'a t -> RNG.t -> 'a Seq.t

Samples from the posterior described by a computation. Note that calling stream_samples when building a model is incorrect.