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Foundations 89

All Foundations89 AI basics25 How language models work23 AI safety and ethics49

Everyday AI 91

All Everyday AI91 Prompting20 ChatGPT and Claude at work25 AI for writing29 AI for research and study33

Building with AI 162

All Building with AI162 Python for AI21 Building with LLM APIs30 RAG and search21 Evaluation and testing21 AI agents31 AI automation25 AI coding assistants30

Machine learning 149

All Machine learning149 Machine learning35 Data science and statistics30 Math for AI23 Deep learning28 NLP14 Computer vision14 Fine tuning and training12 MLOps and deployment18

Creative AI 77

All Creative AI77 Image and video AI58 Audio and voice AI12 AI for design33

AI at work 145

All AI at work145 AI for business34 AI for marketing and sales23 AI for product and operations28 AI for education28 AI for professionals29 AI careers18

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RAG and search Clear all

Planning a RAG Pilot for Company Docs

Planning a RAG Pilot for Company Docs

Scope a small, measurable pilot for an assistant over your company documents before anyone builds too much.BeginnerRAG and search4.5(2)37 lessonsSampleFumiko Arai$4 Parsing PDFs and Messy Documents

Parsing PDFs and Messy Documents

Get clean, well ordered text, tables and page numbers out of PDFs, scans, slides and office files.BeginnerRAG and search4.5(2)36 lessonsSampleFumiko Arai$5 Reranking Retrieved Results

Reranking Retrieved Results

Add a reranking stage that puts the truly relevant passages first, within your latency and cost budget.AdvancedRAG and search4.5(2)35 lessonsSampleEmeka Nwosu$10 Citations and Grounded Answers

Citations and Grounded Answers

Make RAG answers cite the right sources and check that every claim is actually supported by them.IntermediateRAG and search4.5(2)23 lessonsSampleFumiko Arai$7 Questions over Tables and Databases

Questions over Tables and Databases

Answer questions over spreadsheets, document tables and databases correctly, with text to SQL done safely.IntermediateRAG and searchNewFumiko Arai$8 Keyword Search and Inverted Indexes

Keyword Search and Inverted Indexes

Understand how keyword search really works, from inverted indexes to BM25, and tune it for your content.IntermediateRAG and searchNewEmeka Nwosu$6 Keeping a RAG Index Fresh

Keeping a RAG Index Fresh

Keep retrieval in sync with changing documents: updates, deletions, versions, permissions and re-embedding.AdvancedRAG and searchNewFumiko Arai$10 Hybrid Search: Keywords Plus Vectors

Hybrid Search: Keywords Plus Vectors

Combine keyword and vector search so you find both exact codes and loosely worded questions.IntermediateRAG and searchNewEmeka Nwosu$8 Long Context Versus Retrieval

Long Context Versus Retrieval

Choose between sending whole documents to a long context model and retrieving passages, using evidence.All levelsRAG and searchNewFumiko Arai$6