Study guides built around your goal
Choose a topic — or upload a PDF with Plus — and get a print-ready pocket guide: the intuition in plain language, the technical vocabulary in the language of the field, the formulas right, and the classic traps marked.
Access is invite-only for now.
Ridge is a progressive tax: every coefficient pays something, the biggest ones pay most, and nobody gets fired. Everyone stays on the payroll at the end of it — just on a smaller salary.
The same mechanism carries two names: ridge in statistics, weight decay in deep learning. The update multiplies the weight by (1 − ηλ) at every step — hence "decay". Seeing that they are one idea halves the studying.
Cross-link: tree pruning’s complexity parameter plays the same role as the Lasso penalty — a tax on complexity, in a different currency.
A real fragment from a generated guide — Regularization, bilingual mode.
The problem
On the second read the text feels familiar, and the brain quietly swaps familiarity for mastery. You close the book sure that you know it, and find out in the exam that you recognised it without being able to retrieve it.
What the learning evidence actually supports is different: pulling things out of memory (the testing effect) and spreading reviews over time (the spacing effect). A good summary is not the end of studying — it is the reference layer everything else stands on.
Three layers, three jobs
The pocket guide. Read it once without trying to memorise, and come back to it when you get stuck.
Quiz and flashcards drawn from the guide itself, weighted toward what you got wrong.
Anki's job, not ours. Its algorithm beats anything we would hand-roll.
How it works
On Free, name the topic and the platform researches the sources. With Plus, you can also upload a book or paper and identify the exact chapters and sections that matter.
First comes a plan: which thematic blocks, how many sections in each, which concept lands where. Then each block is written separately against that plan. That is what stops a twenty-page document from drifting halfway through.
Does every section open with an analogy? Is any intuition box smuggling in a formula? Are the theory boxes teaching, or just restating the answer? Every rule in the blueprint becomes a mechanical check, and the result ships next to the guide.
Formulas properly rendered, page breaks controlled, ready to print and scribble on. Not a screen you scroll — paper.
Anatomy of a guide
The format is not decorative. It is a written specification with a usage rule for each element, and meeting that specification is the generator’s actual job.
Ridge is a progressive tax: every coefficient pays something, the biggest ones pay most, and nobody gets fired. Everyone stays on the payroll at the end of it — just on a smaller salary.
The same mechanism carries two names: ridge in statistics, weight decay in deep learning. The update multiplies the weight by (1 − ηλ) at every step — hence "decay". Seeing that they are one idea halves the studying.
Cross-link: tree pruning’s complexity parameter plays the same role as the Lasso penalty — a tax on complexity, in a different currency.
Thematic block
Groups sections by subject. Two to four per document.
Intuition
Opens every section, before anything technical. Always a concrete analogy, never a formula, two to four sentences.
Technical content
Definitions, notation and formulas in the language of the literature. This is what you will meet again in the paper.
Deep dive
Only for the concepts that genuinely stick. Overused, the box stops meaning anything, so it has a ceiling: at most one every two sections.
Cross-module link
Ridge in statistics is weight decay in deep learning. Seeing that they are one mechanism halves the studying.
Language
An analogy is born in a language, not translated into one. Asking for the same chapter in another language regenerates it from the source: more tokens, and the only version that works.
Headings, technical terms, definitions and formulas in English. Intuition, deep dives and traps in your own language. This is the reference format.
Everything in English, analogies included. Not one word of the other language survives.
Everything in Portuguese. The canonical English term appears once in parentheses at first mention, then never again.
The method
Under construction
Pocket guides, exam reviews, the retrieval quiz and flashcards with Anki export all work today — inside every generated guide. Tracking concepts across guides to time the anchor project is what comes next.
Plans
Free includes up to five guides per month from topics researched on the web. Plus includes up to 30 guides, accepts supporting PDFs and expands the research.
Up to 5 guides monthly
Choose a topic and get the complete guide, with quizzes, flashcards, projects and Anki export.
Up to 30 guides
Use topics or supporting PDFs. An advanced model researches more sources, and every study resource is included.
The 30 Plus generations never expire. The platform remains invite-only; checkout is coming next.
Questions
PDF upload is a Plus feature. You can upload the whole book, but naming a section range keeps the guide tighter and more economical.
No. If the PDF is images there is no text to extract, and the platform refuses rather than inventing content. Run OCR first.
The guide is anchored in researched sources or the uploaded PDF excerpt. Where a source is ambiguous or incomplete, it should say so instead of filling the gap.
A few minutes per chapter. The screen shows the stage: planning, writing block 2 of 3, rendering.
Yes, and it is generated from scratch rather than translated. It costs a new credit, for the same reason.