rohitg00--ai-engineering-from-scratch
wehub-resource-sync
47 行
3.0 KiB
Markdown
47 行
3.0 KiB
Markdown
# Changelog
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What's new in the curriculum. Most recent first.
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Format loosely follows [Keep a Changelog](https://keepachangelog.com/). Each entry names the phase, lesson, and what changed, so learners can jump straight to the delta.
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## [Unreleased]
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### Added
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- `scripts/scaffold-lesson.sh` — scaffolder that creates `phases/NN-phase/NN-lesson/` with the full folder structure and a `docs/en.md` skeleton prefilled from `LESSON_TEMPLATE.md`.
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- `.github/PULL_REQUEST_TEMPLATE.md` — contributor checklist (code runs, no code comments, built-from-scratch-first, atomic per-lesson commit, markdown-link ROADMAP row).
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- `.github/ISSUE_TEMPLATE/bug_report.md` and `new_lesson_proposal.md` — structured intake for bug reports and lesson pitches.
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- This `CHANGELOG.md`.
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## 2026-04 — Phase 4: Computer Vision complete
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### Added
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- All 28 Phase 4 lessons, covering image fundamentals through multi-modal vision (VLMs, 3D, video, self-supervised).
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- Phase 4 rows in `ROADMAP.md` linked as markdown to the lesson folders, so the website surfaces them.
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### Fixed
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- Phase 4 precision pass across 15+ lessons:
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- `phase-4/02`: shape calculator specifies RF/stride handling for adaptive pool, flatten, and linear.
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- `phase-4/03`: backbone selector description lists all covered families; head guidance added for OCR, medical, industrial.
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- `phase-4/04`: classification diagnostics use quantitative thresholds per failure mode; `n/a` declared for undefined metrics; guard for fewer than 3 classes.
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- `phase-4/06`: detection metric reader uses `AP@0.5` (not `mAP@0.5`); per-class recall declared optional; anchor designer clarifies stride truncation and single-anchor-per-level path.
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- `phase-4/10`: sampler picker declares `unet_forward_ms` as an input; ControlNet guard promoted to rule 0.
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- `phase-4/14`: ViT inspector aligned with refusal rule — port attempts are audited, not endorsed.
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- `phase-4/24`: open-vocab stack picker has explicit rule precedence and license-filter semantics; concept designer resolves step-5/rule-80 conflict.
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- `phase-4/25`: VLM docs `_merge` raises descriptive `ValueError` on placeholder mismatch; CMER normalises internally.
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- `phase-4/27`: `synthetic_frames` clips GT boxes to frame H/W.
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- `phase-4/28`: `rope_3d` validates dim split; dropped unused `F` import from DiT block example.
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## 2026-Q1 and earlier
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### Added
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- Phase 0 (Setup & Tooling): all 12 lessons.
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- Phase 1 (Math Foundations): all 22 lessons.
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- Phase 2 (ML Fundamentals): all 18 lessons.
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- Phase 3 (Deep Learning Core): core lessons through perceptron, backprop, optimizers.
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- Built-in Claude Code skills: `find-your-level` (placement quiz) and `check-understanding` (per-phase quiz).
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- Website at `aiengineeringfromscratch.com`: catalog, per-lesson pages, roadmap, 277-term glossary.
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- Initial scaffolding for all 20 phases (`phases/00-*` through `phases/19-*`).
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- `LESSON_TEMPLATE.md`, `CONTRIBUTING.md`, `ROADMAP.md`, `README.md`.
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[Unreleased]: https://github.com/rohitg00/ai-engineering-from-scratch/compare/HEAD...HEAD
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