
Chris660
Machine Learning in Elixir: query on normalising data between 0..1 (page 5)
This didn’t seem right to me:
For instance, you can squeeze the values of a feature between 0 and 1 by dividing every individual feature by the max value of that feature column and then subtracting by the min value.
To ensure the whole 0…1 range is used, don’t you want to first subtract the minimum value in the column (baseline to 0), then divide by the resulting maximum value?
Effectively:
normalised = (value - min) / (max - min)
First Post!

seanmor5
Author of Genetic Algorithms in Elixir
The wording is incorrect in the book. It’s supposed to be min-max scaling which matches the equation you’ve written. I’ve marked it to get updated
Popular Pragmatic Bookshelf topics

Title: Hands-On Rust (Chap 8 (Adding a Heads Up Display)
It looks like
.with_simple_console_no_bg(SCREEN_WIDTH*2, SCREEN_HEIGHT*2...
New

Title: Hands-On Rust (Chapter 11: prefab)
Just played a couple of amulet-less games. With a bit of debugging, I believe that your can_p...
New

Hi Jamis,
I think there’s an issue with a test on chapter 6. I own the ebook, version P1.0 Feb. 2019.
This test doesn’t pass for me:
...
New

I am working on the “Your Turn” for chapter one and building out the restart button talked about on page 27. It recommends looking into ...
New

The book has the same “Problem space/Solution space” diagram on page 18 as is on page 17. The correct Problem/Solution space diagrams ar...
New

@noelrappin
Running the webpack dev server, I receive the following warning:
ERROR in tsconfig.json
TS18003: No inputs were found in c...
New

When running tox for the first time, I got the following error:
ERROR: InterpreterNotFound: python3.10
I realised that I was running ...
New

The markup used to display the uploaded image results in a Phoenix.LiveView.HTMLTokenizer.ParseError error.
lib/pento_web/live/product_l...
New

Modern front-end development for Rails, second edition - Struggling to get the first chapter to work
After running /bin/setup, the first error was: The foreman' command exists in these Ruby versions: That was easy to fix: gem install fore...
New

@mfazio23
I’ve applied the changes from Chapter 5 of the book and everything builds correctly and runs. But, when I try to start a game,...
New
Other popular topics

I’m thinking of buying a monitor that I can rotate to use as a vertical monitor?
Also, I want to know if someone is using it for program...
New

I ended up cancelling my Moonlander order as I think it’s just going to be a bit too bulky for me.
I think the Planck and the Preonic (o...
New

If you are experiencing Rails console using 100% CPU on your dev machine, then updating your development and test gems might fix the issu...
New

Think Again 50% Off Sale »
The theme of this sale is new perspectives on familiar topics.
Enter coupon code ThinkAgain2021 at checkout t...
New

We’ve talked about his book briefly here but it is quickly becoming obsolete - so he’s decided to create a series of 7 podcasts, the firs...
New

Rails 7 completely redefines what it means to produce fantastic user experiences and provides a way to achieve all the benefits of single...
New

If you get Can't find emacs in your PATH when trying to install Doom Emacs on your Mac you… just… need to install Emacs first! :lol:
bre...
New

Build efficient applications that exploit the unique benefits of a pure functional language, learning from an engineer who uses Haskell t...
New

Author Spotlight:
Karl Stolley
@karlstolley
Logic! Rhetoric! Prag! Wow, what a combination. In this spotlight, we sit down with Karl ...
New

Author Spotlight:
Sophie DeBenedetto
@SophieDeBenedetto
The days of the traditional request-response web application are long gone, b...
New
Categories:
Sub Categories:
Popular Portals
- /elixir
- /rust
- /wasm
- /ruby
- /erlang
- /phoenix
- /keyboards
- /rails
- /js
- /python
- /security
- /go
- /swift
- /vim
- /clojure
- /emacs
- /java
- /haskell
- /onivim
- /svelte
- /typescript
- /crystal
- /c-plus-plus
- /kotlin
- /tailwind
- /gleam
- /react
- /ocaml
- /flutter
- /elm
- /vscode
- /ash
- /opensuse
- /centos
- /php
- /deepseek
- /html
- /scala
- /zig
- /sublime-text
- /textmate
- /nixos
- /debian
- /lisp
- /agda
- /react-native
- /kubuntu
- /arch-linux
- /ubuntu
- /revery
- /manjaro
- /django
- /spring
- /diversity
- /nodejs
- /lua
- /c
- /julia
- /slackware
- /neovim