What's New

Everything added to VizLearn, newest first.

Updated 6 August 2026

59 modules added since 1 August 2026

5 August 2026

Bookmarks, notes, a glossary and a print stylesheet

Bookmark any module from its header, with a note if you want one, and read them all back on /saved/. Stored in your browser only.
A glossary of 49 terms at /glossary/, and a definition card on the first mention of each term in any article.
Printing a module now gives you a clean study sheet instead of a near-black page: no header, no rail, no dead widgets, and the check answers unfolded.
Keyboard access finished. 52 modules had no keyboard route at all - the ones driven by buttons, checkboxes or number fields rather than sliders. Now 223 of 225 do.
Fixed: the arrow-key hint was invisible on every canvas-driven module, because it was being appended inside the <canvas>.

4 new modules

IoU and Non-Max SuppressionComputer Vision Object Detection with Bounding BoxesComputer Vision ResNet and Identity ShortcutsComputer Vision Semantic Segmentation and U-NetComputer Vision

4 August 2026

New modules

17 new modules

BM25 and Sparse Lexical RetrievalGenerative AI & LLMs CASE and Views in SQLDatabases & SQL Chunking Strategies for RAGGenerative AI & LLMs Dot Product vs Cosine Similarity for RetrievalGenerative AI & LLMs Gradient ClippingDeep Learning Hybrid Search: Dense + Sparse (Reciprocal Rank Fusion)Generative AI & LLMs Layer NormalizationDeep Learning Maximal Marginal Relevance (MMR)Generative AI & LLMs NULL Handling and COALESCE in SQLDatabases & SQL Normalization (1NF, 2NF, 3NF) in SQLDatabases & SQL Query Execution Order in SQLDatabases & SQL Query Rewriting and HyDEGenerative AI & LLMs Re-ranking: Bi-Encoders vs Cross-EncodersGenerative AI & LLMs Residual and Skip ConnectionsDeep Learning Retrieval Evaluation MetricsGenerative AI & LLMs Transactions and ACID in SQLDatabases & SQL UNION, INTERSECT and EXCEPT in SQLDatabases & SQL

3 August 2026

Practice mode, shareable state, and an installable app

Practice at /practice/ draws questions from the modules you have opened, weighted by what you got wrong and how long ago.
Every module's controls are now in its URL, so you can link someone to exactly the state you are looking at.
VizLearn is installable and works offline.
The visualisations became keyboard-operable.

18 new modules

Backpropagation and the Computational GraphDeep Learning Context Windows and the KV CacheGenerative AI & LLMs Cross-Entropy and KL DivergenceMaths for Machine Learning DeterminantMaths for Machine Learning Embeddings and Vector SearchGenerative AI & LLMs Encoder-only vs Decoder-only (BERT vs GPT)Natural Language Processing Fine-Tuning vs RLHF and DPOGenerative AI & LLMs HAVING in SQLDatabases & SQL Hallucination and GroundingGenerative AI & LLMs Identity, Inverse and TransposeMaths for Machine Learning Indexes and Query PerformanceDatabases & SQL Information GainMaths for Machine Learning ORDER BY in SQLDatabases & SQL Principal Component AnalysisMachine Learning ProjectionsMaths for Machine Learning Rank and Linear IndependenceMaths for Machine Learning Retrieval-Augmented Generation (RAG)Generative AI & LLMs Subqueries in SQLDatabases & SQL

1 August 2026

Topic landing pages and the lab layer

Each track got its own page at /<track>/ instead of only existing as a fragment of the hub.
Every module gained a runnable experiment, a predict-then-reveal step, and a check at the end.
about, contact, privacy and terms.

20 new modules

A Matrix is a TransformationMaths for Machine Learning Conditional ProbabilityMaths for Machine Learning Covariance and CorrelationMaths for Machine Learning Distance MetricsMaths for Machine Learning Eigenvalues and EigenvectorsMaths for Machine Learning Entropy and InformationMaths for Machine Learning Gradient BoostingMachine Learning Logistic RegressionMachine Learning Maximum Likelihood EstimationMaths for Machine Learning Multi-Head AttentionNatural Language Processing Positional EncodingNatural Language Processing Query, Key and ValueNatural Language Processing ROC Curve and AUCMachine Learning Random Forest and BaggingMachine Learning Ridge and Lasso RegressionMachine Learning Self-AttentionNatural Language Processing Softmax and Cross-EntropyDeep Learning The Attention MechanismNatural Language Processing The Transformer ArchitectureNatural Language Processing Vector NormsMaths for Machine Learning

Module additions on this page are read from the repository history rather than kept by hand, so nothing here can drift from what actually shipped.