Learning notes of Hinton’s Neural Networks for Machine Learning in Coursera.

1. Introduction

1a. Why do we need machine learning

What, Why

• We don’t know how to program to solve some problems or the program might be very complicated.
• Rules may need to change frequently, like recognizing fraud.
• Cheap computation

How

• Collect lots of cases with inputs and correct outputs.
• ML algorithms takes examples and produces a program to do the job.

Good at

• Recognizing patterns
  • Objects
  • Face
  • Spoken words
• Recognizing anomalies (unusual)
  • Transactions
  • Sensor readings in a nuclear power plant
• Prediction
  • Stock prices, exchange rates
  • Movie recommendations

Some git notes.

基本配置

git config

# List configuration
git config -l
git config --global -l

# Config user's info
git config --global user.name "Mr.Blue"
git config --global user.email "silverhugh.77@gmail.com"

# Delete config
git config --global --unset user.username

# Config editor for git, use vim, nano or so on
git config --global core.editor "vim"
# True way to Commit
#   `git commit` will open an vim editor (set by command before)
#   write the commit message in it and `:x` to commit

Hugo releated notes. Current take some notes when reading official docuemts

Tips

Footnotes

This is a footnote.[^1]

[^1]: the footnote text.

Not only number, words work too.¹

Github task list

- [ ] a task list item
- [ ] list syntax required
- [ ] incomplete
- [x] completed

• a task list item
• list syntax required
• incomplete
• completed

Reading documents

目录结构

.
├── archetypes
├── config.toml
├── content
├── data
├── layouts
├── static
└── themes

archetypes: 用于hugo new，Lookup Order for Archetypes：

• archetypes/posts.md
• archetypes/default.md
• themes//archetypes/posts.md
• themes//archetypes/default.md (Auto-generated with hugo new site)