Phase 5 — Specialization & Research Maturity

This is the summit. Through the first five phases you learned the field; this phase is about crossing from knowing it to extending it. A research-trained, industry-seasoned engineer can do four things a strong practitioner often cannot: read the primary literature fluently and reproduce it, work at the frontier of a subfield, go deep enough in one area to have genuine expertise, and produce original work that others build on. Phase 5 develops all four.

It is also the most self-directed phase, by design. Up to here the path was prescribed because the foundations are shared. From here, mastery means making your own choices: which papers to read, which subfield to go deep in, what original contribution to attempt. The modules give you the methods and the structure; the direction is increasingly yours. That shift, from following a curriculum to driving your own learning and work, is itself the final skill.

Done seriously, this phase is open-ended and can occupy a long time, which is appropriate: it is where you do the work that defines you as an engineer and, if you choose, a researcher. The output is not a grade but a body of real work: reproduced papers, a deep specialization, and an original contribution that lives in the world.

Modules (work them in order, then iterate)¶

• 5.1 — Reading & Reproducing Papers (hybrid · ship gate) How to read a paper for real, how to find what matters, and reproducing a non-trivial result from the paper alone. The skill that unlocks the entire literature.

• 5.2 — Reinforcement Learning (hybrid · build gate) Use an RL agent, then build the core algorithms: Markov decision processes, value and policy methods, policy gradients, and a working agent. RL’s growing role in alignment and agents.

• 5.3 — A Chosen Specialization (self-directed · ship gate) Go deep in one track, natural language processing, computer vision, generative models, reinforcement learning, or ML systems, with a substantial project in that area.

• 5.4 — Original Work (self-directed · ship gate) A research-quality project or a meaningful open-source contribution: a novel experiment, a careful reproduction-and-extension, or a tool the community uses.

Phase capstone¶

Capstone 5: a portfolio-defining piece of original work, taken to a standard you would be proud to present to a hiring committee or a paper reviewer. This is the polished culmination of Module 5.4, shipped to its own repository, modelwright-capstone, with a writeup that stands on its own. It is the single artifact that best demonstrates everything the curriculum built.

Begin with Module 5.1.