AI Foundations
Understand what AI is, how systems learn, where they fail, and how to judge claims without hype.
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1019 plain-English guides, structured learning paths, and an open library — built by an independent 501(c)(3) nonprofit so anyone can understand modern AI.
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Each course includes explicit outcomes, mapped competencies, practice activities, and an applied capstone.
Understand what AI is, how systems learn, where they fail, and how to judge claims without hype.
Use AI productively while protecting privacy, checking outputs, and preserving human accountability.
Evaluate workplace use cases, run safe pilots, measure value, and communicate changes responsibly.
Analyze AI systems through rights, equity, governance, safety, and public-interest outcomes.
Understand language models, retrieval, agents, evaluation, cost, and deployment safeguards through practical system design.
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AI helps public-health agencies spot outbreaks earlier, model how diseases spread, and target interventions across whole populations rather than single…
IndustriesAI is reshaping how new drugs are tested — finding eligible patients faster, predicting which trials will succeed, and catching safety signals sooner.
Language AIQLoRA is a technique that lets you fine-tune a massive language model on a single consumer GPU by storing the frozen model in just 4 bits per weight.
Language AIDecoding controls are the knobs that decide how a language model picks each next word from its probability distribution.
Visual AIDiffusion Transformers (DiTs) swap the convolutional U-Net at the heart of image and video generators for a Transformer backbone.
TechnicalAdam is the workhorse optimizer behind most modern neural networks, automatically tuning a separate learning rate for every parameter.
TechnicalA learning rate schedule changes the step size during training instead of holding it fixed.
TechnicalLayer normalization stabilizes training by rescaling the activations within each individual example so they have zero mean and unit variance.
IndustriesAI in nutrition uses food databases, image recognition, and predictive models to personalize diets, estimate intake, and support clinical decisions.
IndustriesAI in physical rehabilitation uses motion tracking, wearables, and adaptive software to guide exercises, measure progress, and personalize recovery.
IndustriesAI in policing spans facial recognition, predictive policing, license-plate readers, and gunshot detection.
Visual AIFeature Pyramid Networks (FPN) let detectors spot objects at wildly different sizes by building a multi-scale 'pyramid' of features cheaply.
Check what you learned with topic quizzes, then explore our structured courses and current certification requirements. Core guides remain free to read.