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Diff for: src/algorithms/ffbs.jl

+12-8
Original file line numberDiff line numberDiff line change
@@ -26,13 +26,13 @@ function (callback::WeightedParticleRecorderCallback)(
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end
2727

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function gen_trajectory(
29-
rng::Random.AbstractRNG,
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model::StateSpaceModel,
29+
rng::Random.AbstractRNG,
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model::StateSpaceModel,
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particles::AbstractMatrix{T}, # Need better container
32-
log_weights::AbstractMatrix{WT},
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log_weights::AbstractMatrix{WT},
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forward_state,
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n_timestep::Int;
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kwargs...
35+
kwargs...,
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) where {T,WT}
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trajectory = Vector{T}(undef, n_timestep)
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trajectory[end] = forward_state
@@ -51,7 +51,6 @@ function gen_trajectory(
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return trajectory
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end
5353

54-
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function backward(
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model::StateSpaceModel, step::Integer, state, particles::T, log_weights::WT; kwargs...
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) where {T,WT}
@@ -61,7 +60,6 @@ function backward(
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return log_weights + transitions
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end
6362

64-
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function sample(
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rng::Random.AbstractRNG,
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model::StateSpaceModel{T,LDT},
@@ -71,7 +69,6 @@ function sample(
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callback=nothing,
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kwargs...,
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) where {T,LDT,N}
74-
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n_timestep = length(obs)
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recorder = WeightedParticleRecorderCallback(
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Array{eltype(model.dyn)}(undef, n_timestep, N), Array{T}(undef, n_timestep, N)
@@ -85,7 +82,14 @@ function sample(
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trajectories[end, :] = particles.filtered[idx_ref]
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for j in 1:M
88-
trajectories[:, j] = gen_trajectory(rng, model, recorder.particles, recorder.log_weights, trajectories[end, j], n_timestep)
85+
trajectories[:, j] = gen_trajectory(
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rng,
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model,
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recorder.particles,
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recorder.log_weights,
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trajectories[end, j],
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n_timestep,
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)
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end
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return trajectories
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end

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