---
# System prepended metadata

title: Supervised Learning
tags: [ml]

---

---
title: Supervised Learning
tags: ml
---

### Supervised Learning
- Predicting labels given input features
- Regression
    - A problem is a regression when the output labels take on arbitrary numerical values
- Classification
    - Common loss function is cross entropy
    - Hierarchical classification
        - Not all errors are equal so if we are unsure, it’s better to classify something as one thing over another
- Tagging
    - Predicting classes that are not mutually exclusive so a bounding box or image can be labelled as multiple different things
- Search
    - Display set of relevant items to the user
- Recommender systems
    - Display set of relevant items to the user but personalization to specific users 
- Sequence learning
    - Require a model to ingest sequences of inputs or to emit sequences of outputs (or both)
