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Update DQN.jl #41

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4e1a7d4
Update DQN.jl
xgdgsc Apr 11, 2020
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xgdgsc Apr 30, 2020
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7 changes: 3 additions & 4 deletions examples/CartPole/DQN.jl
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Original file line number Diff line number Diff line change
@@ -1,11 +1,10 @@
using Flux, Gym
using Flux.Optimise: Optimiser
using Flux.Tracker: data
using Statistics: mean
using DataStructures: CircularBuffer
using Distributions: sample
using Printf
#using CuArrays
using StatsBase

# Load game environment
env = make("CartPole-v0", :human_pane)
Expand Down Expand Up @@ -48,15 +47,15 @@ remember(state, action, reward, next_state, done) =
push!(memory, (data(state), action, reward, data(next_state), done))

function action(state, train=true)
train && rand() <= get_ϵ(e) && (return Gym.sample(env.action_space))
train && rand() <= get_ϵ(e) && (return Gym.sample(env._env.action_space))
act_values = model(state |> gpu)
return Flux.onecold(act_values)
end

function replay()
global ϵ
batch_size = min(BATCH_SIZE, length(memory))
minibatch = sample(memory, batch_size, replace = false)
minibatch = StatsBase.sample(memory, batch_size, replace = false)

x = []
y = []
Expand Down