ahamez
Machine Learning in Elixir: Chapter 1 doesn't work with Axon 0.7 (page 26)
Hello @seanmor5 ,
When upgrading Axon to 0.7, evaluation fails with:
** (ArgumentError) argument at position 3 is not compatible with compiled function template.
%{i: #Nx.Tensor<
s32
>, model_state: #Inspect.Error<
got Protocol.UndefinedError with message:
"""
protocol Enumerable not implemented for #Nx.Tensor<
f32[3]
> of type Nx.Defn.TemplateDiff (a struct). This protocol is implemented for the following type(s): Date.Range, Explorer.Series.Iterator, File.Stream, Function, GenEvent.Stream, HashDict, HashSet, IO.Stream, Kino.Control, Kino.Input, Kino.JS.Live, List, Map, MapSet, Range, Stream, Table.Mapper, Table.Zipper
"""
while inspecting:
%{
data: %{
"dense_0" => %{
"bias" => #Nx.Tensor<
f32[3]
>,
"kernel" => #Nx.Tensor<
f32[4][3]
>
}
},
state: %{},
__struct__: Axon.ModelState,
parameters: %{"dense_0" => ["bias", "kernel"]},
frozen_parameters: %{}
}
Stacktrace:
(elixir 1.17.2) lib/enum.ex:1: Enumerable.impl_for!/1
(elixir 1.17.2) lib/enum.ex:166: Enumerable.reduce/3
(elixir 1.17.2) lib/enum.ex:4423: Enum.reduce/3
(axon 0.7.0) lib/axon/model_state.ex:359: anonymous fn/2 in Inspect.Axon.ModelState.get_param_info/1
(stdlib 6.0) maps.erl:860: :maps.fold_1/4
(axon 0.7.0) lib/axon/model_state.ex:359: anonymous fn/2 in Inspect.Axon.ModelState.get_param_info/1
(stdlib 6.0) maps.erl:860: :maps.fold_1/4
(axon 0.7.0) lib/axon/model_state.ex:320: Inspect.Axon.ModelState.inspect/2
>, loss:
<<<<< Expected <<<<<
#Nx.Tensor<
f32
>
==========
#Nx.Tensor<
f64
>
>>>>> Argument >>>>>
, optimizer_state: {%{scale: #Nx.Tensor<
f32
>}}, loss_scale_state: %{}, y_true: #Nx.Tensor<
u8[120][3]
>, y_pred: #Nx.Tensor<
f64[120][3]
>}
(nx 0.9.1) lib/nx/defn.ex:342: anonymous fn/7 in Nx.Defn.compile_flatten/5
(nx 0.9.1) lib/nx/lazy_container.ex:73: anonymous fn/3 in Nx.LazyContainer.Map.traverse/3
(elixir 1.17.2) lib/enum.ex:1829: Enum."-map_reduce/3-lists^mapfoldl/2-0-"/3
(elixir 1.17.2) lib/enum.ex:1829: Enum."-map_reduce/3-lists^mapfoldl/2-0-"/3
(nx 0.9.1) lib/nx/lazy_container.ex:72: Nx.LazyContainer.Map.traverse/3
(nx 0.9.1) lib/nx/defn.ex:339: Nx.Defn.compile_flatten/5
(nx 0.9.1) lib/nx/defn.ex:331: anonymous fn/4 in Nx.Defn.compile/3
#cell:75r7qhxms33esmsj:5: (file)
It seems it’s a problem between the type of the iris dataset (:f64) whereas :f32 is expected.
Marked As Solved
kubafu
I stumbled upon it too and fixed it with explicit conversion to :f32, i.e.
x_train =
train_data[@columns]
|> Nx.stack(axis: 1)
|> Nx.as_type(:f32)
y_train =
train_data["species"]
|> Nx.stack(axis: -1)
|> Nx.equal(Nx.iota({1, 3}, axis: -1))
x_test =
test_data[@columns]
|> Nx.stack(axis: 1)
|> Nx.as_type(:f32)
y_test =
test_data["species"]
|> Nx.stack(axis: -1)
|> Nx.equal(Nx.iota({1, 3}, axis: -1))
6
Also Liked
nunez
Cool! I updated it at the dataframe level since Nx still scares me.
cols = ~w(sepal_width sepal_length petal_length petal_width)
normalized_iris =
DF.mutate(
iris,
for col <- across(^cols) do
{col.name, Explorer.Series.cast((col - mean(col)) / standard_deviation(col), :f32)}
end
)
2
Popular Pragmatic Bookshelf topics
Hello Brian,
I have some problems with running the code in your book. I like the style of the book very much and I have learnt a lot as...
New
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
your book suggests to use Image.toByteData() to convert image to bytes, however I get the following error: "the getter ‘toByteData’ isn’t...
New
Hello! Thanks for the great book.
I was attempting the Trie (chap 17) exercises and for number 4 the solution provided for the autocorre...
New
#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
I ran this command after installing the sample application:
$ cards add do something --owner Brian
And got a file not found error:
Fil...
New
Hey there,
I’m enjoying this book and have learned a few things alredayd. However, in Chapter 4 I believe we are meant to see the “>...
New
Hello @herbert ! Trying to get the very first “Hello, Bracket Terminal!" example to run (p. 53). I develop on an Amazon EC2 instance runn...
New
Docker-Machine became part of the Docker Toolbox, which was deprecated in 2020, long after Docker Desktop supported Docker Engine nativel...
New
Getting an error when installing the dependencies at the start of this chapter:
could not compile dependency :exla, "mix compile" failed...
New
Other popular topics
Brace yourself for a fun challenge: build a photorealistic 3D renderer from scratch! In just a couple of weeks, build a ray tracer that r...
New
I know that these benchmarks might not be the exact picture of real-world scenario, but still I expect a Rust web framework performing a ...
New
From finance to artificial intelligence, genetic algorithms are a powerful tool with a wide array of applications. But you don't need an ...
New
I’ve been hearing quite a lot of comments relating to the sound of a keyboard, with one of the most desirable of these called ‘thock’, he...
New
The V Programming Language
Simple language for building maintainable programs
V is already mentioned couple of times in the forum, but I...
New
A few weeks ago I started using Warp a terminal written in rust. Though in it’s current state of development there are a few caveats (tab...
New
Was just curious to see if any were around, found this one:
I got 51/100:
Not sure if it was meant to buy I am sure at times the b...
New
Big O Notation can make your code faster by orders of magnitude. Get the hands-on info you need to master data structures and algorithms ...
New
Build modern server-driven web applications using htmx. Whatever programming language you use, you’ll write less (and cleaner) code.
...
New
A Brief Review of the Minisforum V3 AMD Tablet.
Update: I have created an awesome-minisforum-v3 GitHub repository to list information fo...
New
Categories:
Sub Categories:
Popular Portals
- /elixir
- /rust
- /wasm
- /ruby
- /erlang
- /phoenix
- /keyboards
- /python
- /js
- /rails
- /security
- /go
- /swift
- /vim
- /clojure
- /java
- /emacs
- /haskell
- /svelte
- /typescript
- /onivim
- /kotlin
- /c-plus-plus
- /crystal
- /tailwind
- /react
- /gleam
- /ocaml
- /flutter
- /elm
- /vscode
- /ash
- /html
- /deepseek
- /opensuse
- /zig
- /centos
- /php
- /scala
- /react-native
- /lisp
- /sublime-text
- /textmate
- /nixos
- /debian
- /agda
- /deno
- /django
- /kubuntu
- /arch-linux
- /nodejs
- /ubuntu
- /spring
- /revery
- /manjaro
- /julia
- /lua
- /diversity
- /quarkus
- /markdown









