WORKSHOP: MY AI IS BETTER THAN YOURS WS25
MODELS: CLASSIFIERS
Lecturer: Kim Albrecht Lars Christian Schmidt
Winter 2025
Model Type: Supervised Classification Model
What it does: Recognizes and sorts things into categories based on example data.
Media: Sound and Images
A classifier is one of the simplest types of AI models. It learns to recognize patterns in data and sort them into categories you define.
It can answer questions like:
“Is this a cat or a dog?”
“Is this sound a laugh or a sneeze?”
“Does this image belong to style A or style B?”
You train it by giving it labeled examples — the more the better — and it learns what makes each category unique.
Workings
1. Pick a classification task
Think of 2–5 categories you want to distinguish. For example:
- “Happy / Sad / Confused” facial expressions
- “Wobbly line / Geometric line / Chaotic line”
- “Voice: whisper / normal / shout”
- “Plant leaf shapes: round / jagged / split”
2. Collect data for each category
- At least 20–30 samples per category, ideally more
- Use your phone, camera, drawing pad, or microphone
- Make sure labels are consistent and clear
3. Train the model
- Use Teachable Machine (easy and browser-based)
- Choose Image, Audio, or Pose classifier
- Upload your labeled data
- Press “Train Model”
4. Test and use your model
- Try real-time testing via webcam, mic, or file upload
- Export the model to use in websites or installations
- Reflect on what works and what fails — and why
Why Try a Classifier?
- Fastest way to train a working model
- No coding required (with Teachable Machine)
- Great for testing the boundaries of machine understanding
- Works with any kind of media: drawings, sounds, gestures, objects
- Excellent for designing your own categories and exploring bias