
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

Running the examples in chapter 5 c under pytest 5.4.1 causes an AttributeError: ‘module’ object has no attribute ‘config’.
In particula...
New

Title: Design and Build Great Web APIs - typo “https://company-atk.herokuapp.com/2258ie4t68jv” (page 19, third bullet in URL list)
Typo:...
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

First, the code resources:
Page 237: rumbl_umbrella/apps/rumbl/mix.exs
Note: That this file is missing.
Page 238: rumbl_umbrella/app...
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

I’m running Android Studio “Arctic Fox” 2020.3.1 Patch 2, and I’m embarrassed to admit that I only made it to page 8 before running into ...
New

When installing Cards as an editable package, I get the following error:
ERROR: File “setup.py” not found. Directory cannot be installe...
New

Hi,
I completed chapter 6 but am getting the following error when running:
thread 'main' panicked at 'Failed to load texture: IoError(O...
New

I’m a newbie to Rails 7 and have hit an issue with the bin/Dev script mentioned on pages 112-113.
Iteration A1 - Seeing the list of prod...
New

Book: Programming Phoenix LiveView, page 142 (157/378), file lib/pento_web/live/product_live/form_component.ex, in the function below:
d...
New
Other popular topics

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

I am thinking in building or buy a desktop computer for programing, both professionally and on my free time, and my choice of OS is Linux...
New

Rust is an exciting new programming language combining the power of C with memory safety, fearless concurrency, and productivity boosters...
New

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

I have seen the keycaps I want - they are due for a group-buy this week but won’t be delivered until October next year!!! :rofl:
The Ser...
New

Crystal recently reached version 1. I had been following it for awhile but never got to really learn it. Most languages I picked up out o...
New

Biggest jackpot ever apparently! :upside_down_face:
I don’t (usually) gamble/play the lottery, but working on a program to predict the...
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

Author Spotlight
Dmitry Zinoviev
@aqsaqal
Today we’re putting our spotlight on Dmitry Zinoviev, author of Data Science Essentials in ...
New

The File System Access API with Origin Private File System.
WebKit supports new API that makes it possible for web apps to create, open,...
New
Categories:
Sub Categories:
Popular Portals
- /elixir
- /rust
- /ruby
- /wasm
- /erlang
- /phoenix
- /keyboards
- /rails
- /js
- /python
- /security
- /go
- /swift
- /vim
- /clojure
- /emacs
- /haskell
- /java
- /onivim
- /svelte
- /typescript
- /crystal
- /kotlin
- /c-plus-plus
- /tailwind
- /gleam
- /ocaml
- /react
- /elm
- /flutter
- /vscode
- /ash
- /opensuse
- /centos
- /php
- /deepseek
- /html
- /zig
- /scala
- /textmate
- /sublime-text
- /lisp
- /nixos
- /debian
- /react-native
- /agda
- /kubuntu
- /arch-linux
- /revery
- /django
- /ubuntu
- /spring
- /manjaro
- /nodejs
- /diversity
- /lua
- /c
- /julia
- /slackware
- /markdown