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Lessons (15)
- Data Preparation and Model Training
Turn raw data into trustworthy examples, prevent leakage, and build repeatable training experiments. The big idea Model quality …
- Train Your First Model from Scratch
… loss = mse(train, lambda x: slope x + intercept) print(f"epoch={epoch + 1}, training mse={loss:.4f}") baseline …
- Machine Learning Fundamentals
… Estimating a home's sale price is regression. Train, validate, test The training set fits model parameters. The …
- Transformers and Large Language Models
… Modern models stack attention and feed-forward layers, with learned parameters shaped by training. Training stages - Pretraining: learn …
- Python and Math Foundations with Runnable Examples
… Standardization transforms a value using a training mean and standard deviation. python from statistics import mean, pstdev training …
- What to Learn in AI, and in What Order
… runnable vectors, normalization, similarity, and metrics. - [Train your first model](/learn/ai/train-your-first-model): a complete …
- Neural Networks and Deep Learning
… Each layer transforms its input; training adjusts the parameters so the network's output reduces a chosen loss …
- What Is Artificial Intelligence? A Developer's Guide
… Updating an application's prompt is not the same as training the model. text Training: past orders + actual …
- AI Specialties and Real-World Examples
… Near-duplicate frames in training and test can exaggerate performance. Evaluate under dim light and different packaging, not …
- Developer Learning Plan and Document-Assistant Capstone
… similarity, precision, and recall Week 3 Training, loss, data splits Train the delivery model Compare a baseline on …
- Embeddings, Semantic Search, and RAG
… The model can then answer using supplied evidence instead of relying only on what it learned during training …
- Two Pointers & Sliding Window
… The big idea Imagine looking at a long train through a window that shows exactly 3 carriages. To …
- Backend Languages: Node.js, Go, Python & Rust
… top speed and safety, but you need training to drive it.  makes perfect parts, but you need training before you touch it. ![Four languages, four tools: what …