Why this build, here
Pupils and teachers across Zambia revise from past papers, usually by scrolling scanned PDFs. Vector search alone misses exact terms like years and paper numbers; keyword search alone misses meaning. Real search uses both.
The build, step by step
Turn scans into questions
Build keyword search
Add vector search
Combine and rerank
Measure it
The steps, checks and practice open with a code
You can see what this lesson builds. The detail of each step, the finished-when checks and interview scoring come with the K850 practice, along with weekly build sessions and code review.
Read and run
Interview practice
Questions on this topic from AI Engineering Interview Questions, company-wise, with the companies it lists. Write your answer the way you would say it; Jev scores it and DeepSeek tells you what to add.
Scoring opens with an access code. You can still read the questions and prepare.