Supervised learning

Understanding Machine Learning

Hadrien Lacroix

Content Developer at DataCamp

Modeling

image of a model, the human kind

Types

supervised learning and unsupervised learning are subgroups of machine learning

What is supervised learning?

supervised learning is highlighted

Classification and regression

classification and regression are subgroups of supervised learning

Classification

classification is highlighted

Classification

Classification = assigning a category
- Will this customer stop its subscription?
  - Yes, No
- Is this mole cancerous?
  - Yes, No
- What kind of wine is that?
  - Red, White, Rosé
- What flower is that?
  - Rose, Tulip, Carnation, Lily

Observations

college observations

Features

features

Target

target

Graphing our data

full_data

Splitting data

training data

Manual classifier

manual classifier

Support vector machine - linear classifier

linear clasification

Support vector machine - polynomial classifier

polynomial classifier

Regression

regression is highlighted

Regression

Regression = assigning a continuous variable
- How much will this stock be worth?
- What is this exoplanet's mass?
- How tall will this child be as an adult?

Predicting temperature

weather table

Training data

weather training data

Linear regression

regression line on data

Model

model

Given humidity...

use line to find temperature based on humidity vertical arrow

...find temperature

use line to find temperature based on humidity horizontal arrow

Testing data

testing data

Classification vs regression

Regression = continuous
- Any value within a finite (height) or infinite (time) interval
  - 20°F, 20.1°F, 20.01°F...
Classification = category
- One of few specific values
  - Cold, Mild, Hot

Let's practice!

Understanding Machine Learning