我努力让我的神经网络正常工作。我有一个关于是否患有疟疾的细胞图片数据集(https://www.kaggle.com/iarunava/cell-images-for-detecting-malaria)。我这样安排我的数据:
X_training a matrix of dimension 30000×2668, type : Array{Float64,2}
Y_training a matrix of dimension 1×2668, type : Array{Float64,2}
与X_tests
和相同Y_tests
我的简单神经网络:
function simple_nn(X_tests, Y_tests, X_training, Y_training)
input = 100*100*3
hl1 = 32
m = Chain(
Dense(input, 32, relu),
Dense(32, 2),
softmax) |> gpu
loss(x, y) = crossentropy(m(x), y)
accuracy(x, y) = mean(onecold(m(x)) .== onecold(y))
dataset = repeated((X_training, Y_training), 2)
evalcb = () -> @show(loss(X_training, Y_training))
opt = ADAM(params(m))
Flux.train!(loss, dataset, opt, cb = throttle(evalcb, 10))
println("acc X,Y ", accuracy(X_training, Y_training))
# Error here
println("acc tX, tY ", accuracy(X_tests, Y_tests))
end
我的错误是:
ERROR: OutOfMemoryError()
...
Stacktrace:
[1] * at ./boot.jl:396 [inlined]
[2] _forward at /home/.../.julia/packages/Flux/8XpDt/src/tracker/lib/array.jl:361 [inlined]
[3] #track#1 at /home/.../.julia/packages/Flux/8XpDt/src/tracker/Tracker.jl:51 [inlined]
[4] track at /home/.../.julia/packages/Flux/8XpDt/src/tracker/Tracker.jl:51 [inlined]
[5] * at /home/.../.julia/packages/Flux/8XpDt/src/tracker/lib/array.jl:349 [inlined]
[6] Dense at /home/.../.julia/packages/Flux/8XpDt/src/layers/basic.jl:82 [inlined]
[7] Dense at /home/.../.julia/packages/Flux/8XpDt/src/layers/basic.jl:122 [inlined]
[8] (::Dense{typeof(relu),TrackedArray{…,Array{Float32,2}},TrackedArray{…,Array{Float32,1}}})(::Array{Float64,2}) at /home/.../.julia/packages/Flux/8XpDt/src/layers/basic.jl:125
[9] applychain(::Tuple{Dense{typeof(relu),TrackedArray{…,Array{Float32,2}},TrackedArray{…,Array{Float32,1}}},Dense{typeof(identity),TrackedArray{…,Array{Float32,2}},TrackedArray{…,Array{Float32,1}}},typeof(softmax)}, ::Array{Float64,2}) at /home/.../.julia/packages/Flux/8XpDt/src/layers/basic.jl:31
[10] Chain at /home/.../.julia/packages/Flux/8XpDt/src/layers/basic.jl:33 [inlined]
[11] (::getfield(Main, Symbol("#accuracy#49")){Chain{Tuple{Dense{typeof(relu),TrackedArray{…,Array{Float32,2}},TrackedArray{…,Array{Float32,1}}},Dense{typeof(identity),TrackedArray{…,Array{Float32,2}},TrackedArray{…,Array{Float32,1}}},typeof(softmax)}}})(::Array{Float64,2}, ::Array{Float64,2}) at /home/.../neural_net.jl:108
[12] simple_nn(::Array{Float64,2}, ::Array{Float64,2}, ::Array{Float64,2}, ::Array{Float64,2}) at /home/.../neural_net.jl:118
[13] top-level scope at util.jl:156
我的矩阵太大了吗?