polmiro

polmiro

Machine Learning in Elixir: Error in Chapter 9, identifying cats and dogs again

@seanmor5

the code provided I am running into an error when training the first model that uses transfer learning with ONNX model mobilenetv2-7. I am a bit stuck here, not really sure what may be wrong.

warning: Axon.Optimizers.adam/1 is deprecated. Use Polaris.Optimizers.adam/1 instead
  machine-learning-in-elixir-src/StopReinventingTheWheel.livemd#cell:s4yqqx5n4j6oyja2b2c57iqes4fvcbny:2


12:22:35.339 [warning] found unexpected key in the initial parameters map: "mobilenetv20_output_pred_fwd"
Epoch: 0, Batch: 700, accuracy: 0.7747430 loss: 0.4431267
Batch: 6, accuracy: 0.9151786 loss: 0.1636844
** (ArgumentError) argument at position 1 is not compatible with compiled function template.

{
 <<<<< Expected <<<<<
 #Nx.Tensor<
   f32[32][channels: 3][height: 160][width: 160]
 >
 ==========
 #Nx.Tensor<
   f32[26][channels: 3][height: 160][width: 160]
 >
 >>>>> Argument >>>>>
 , 
 <<<<< Expected <<<<<
 #Nx.Tensor<
   s64[32][1]
 >
 ==========
 #Nx.Tensor<
   s64[26][1]
 >
 >>>>> Argument >>>>>
 }

    (nx 0.6.2) lib/nx/defn.ex:323: anonymous fn/7 in Nx.Defn.compile_flatten/5
    (elixir 1.15.2) lib/enum.ex:1819: Enum."-map_reduce/3-lists^mapfoldl/2-0-"/3
    (nx 0.6.2) lib/nx/lazy_container.ex:61: Nx.LazyContainer.Tuple.traverse/3
    (nx 0.6.2) lib/nx/defn.ex:320: Nx.Defn.compile_flatten/5
    (nx 0.6.2) lib/nx/defn.ex:312: anonymous fn/4 in Nx.Defn.compile/3
    (stdlib 5.0.2) timer.erl:270: :timer.tc/2
    (axon 0.6.0) lib/axon/loop.ex:1805: anonymous fn/4 in Axon.Loop.run_epoch/5
    /data/machine-learning-in-elixir-src/StopReinventingTheWheel.livemd#cell:s4yqqx5n4j6oyja2b2c57iqes4fvcbny:10: (file)

Marked As Solved

joshprintsimple

joshprintsimple

@seanmor5

The length of the val_paths has to be divisible by the batch number so that the tensors come out the right shape.
You can just add this line

val_paths = Enum.take(val_paths, 224)

after setting the val_paths. I also removed the Enum.take line at the end because the length of the train_paths is 24000 and that is also divisible by a batch size of 32.
so that cell would look like this now:

{test_paths, train_paths} =
  Path.wildcard("train/*.jpg")
  |> Enum.shuffle()
  |> Enum.split(1000)

{test_paths, val_paths} = test_paths |> Enum.split(750)
val_paths = Enum.take(val_paths, 224)

batch_size = 32
target_height = 160
target_width = 160

train_pipeline =
  CatsAndDogs.pipeline_with_augmentations(
    train_paths,
    batch_size,
    target_height,
    target_width
  )

val_pipeline =
  CatsAndDogs.pipeline(
    val_paths,
    batch_size,
    target_height,
    target_width
  )

test_pipeline =
  CatsAndDogs.pipeline(
    test_paths,
    batch_size,
    target_height,
    target_width
  )

# Enum.take(train_pipeline, 1)

Where Next?

Popular Pragmatic Bookshelf topics Top

johnp
Hi Brian, Looks like the api for tinydb has changed a little. Noticed while working on chapter 7 that the .purge() call to the db throws...
New
jesse050717
Title: Web Development with Clojure, Third Edition, pg 116 Hi - I just started chapter 5 and I am stuck on page 116 while trying to star...
New
edruder
I thought that there might be interest in using the book with Rails 6.1 and Ruby 2.7.2. I’ll note what I needed to do differently here. ...
New
brian-m-ops
#book-python-testing-with-pytest-second-edition Hi. Thanks for writing the book. I am just learning so this might just of been an issue ...
New
patoncrispy
I’m new to Rust and am using this book to learn more as well as to feed my interest in game dev. I’ve just finished the flappy dragon exa...
New
jskubick
I think I might have found a problem involving SwitchCompat, thumbTint, and trackTint. As entered, the SwitchCompat changes color to hol...
New
oaklandgit
Hi, I completed chapter 6 but am getting the following error when running: thread 'main' panicked at 'Failed to load texture: IoError(O...
New
creminology
Skimming ahead, much of the following is explained in Chapter 3, but new readers (like me!) will hit a roadblock in Chapter 2 with their ...
New
kolossal
Hi, I need some help, I’m new to rust and was learning through your book. but I got stuck at the last stage of distribution. Whenever I t...
New
Henrai
Hi, I’m working on the Chapter 8 of the book. After I add add the point_offset, I’m still able to see acne: In the image above, I re...
New

Other popular topics Top

wolf4earth
@AstonJ prompted me to open this topic after I mentioned in the lockdown thread how I started to do a lot more for my fitness. https://f...
New
AstonJ
SpaceVim seems to be gaining in features and popularity and I just wondered how it compares with SpaceMacs in 2020 - anyone have any thou...
New
brentjanderson
Bought the Moonlander mechanical keyboard. Cherry Brown MX switches. Arms and wrists have been hurting enough that it’s time I did someth...
New
AstonJ
Thanks to @foxtrottwist’s and @Tomas’s posts in this thread: Poll: Which code editor do you use? I bought Onivim! :nerd_face: https://on...
New
AstonJ
Just done a fresh install of macOS Big Sur and on installing Erlang I am getting: asdf install erlang 23.1.2 Configure failed. checking ...
New
rustkas
Intensively researching Erlang books and additional resources on it, I have found that the topic of using Regular Expressions is either c...
New
DevotionGeo
I have always used antique keyboards like Cherry MX 1800 or Cherry MX 8100 and almost always have modified the switches in some way, like...
New
PragmaticBookshelf
Author Spotlight: Peter Ullrich @PJUllrich Data is at the core of every business, but it is useless if nobody can access and analyze ...
New
CommunityNews
A Brief Review of the Minisforum V3 AMD Tablet. Update: I have created an awesome-minisforum-v3 GitHub repository to list information fo...
New
AstonJ
Curious what kind of results others are getting, I think actually prefer the 7B model to the 32B model, not only is it faster but the qua...
New

Sub Categories: