Dhee · the memory behind Tura

A tutor should remember what you know, not what you said.

Dhee keeps every page you read and every answer you give as a fact, then works out, fresh every time, what is holding, what is slipping, and what nobody has asked you yet.

Start learning View Dhee on GitHub

One student’s library, as Tura draws it. Each ring is a topic; each dot around it, one key point.

not asked yet
holding
needs another look
fading

Recall@5 on LongMemEval: 99.4%Dhee’s retrieval, on the standard long-memory benchmark.
Kinds of study moment: 9Read, asked, quizzed, taught, watched, noted, highlighted, built, sat.
Scores stored: 0Where you stand is worked out from the facts each time.
States, not a percentage: 6Unknown and weak are never drawn the same.

Why a general memory is not enough

The same twenty minutes, remembered two ways.

A student reads two pages on relative velocity, answers two questions (one right, one wrong) and asks the tutor to slow down and draw it. Here is what each kind of memory keeps.

General agent memorymemory · summary

Student is studying kinematics and seemed confused about relative velocity.¹ Prefers visual explanations and a slower pace.² Good progress, about 60% through the chapter.³ ⁴

Confused about what, exactly?
Relative velocity is seven key points. “Confused” cannot tell the tutor which one to teach again.
Guessed, then kept
Inferred from the tone of one message, and now it shapes every lesson after.
Pages turned, not things known
Reading the chapter filled the bar. Nothing was asked, so nothing was learned.
Written once, wrong forever
A summary cannot be re-scored. When the model improves, the note stays as it was.

Dhee, as a tutor’s memory6 facts · 0 summaries

readRelative velocity · p. 2438 s
readRelative velocity · p. 2552 s
quizFrame of referenceUnderstand · right
quizSubtracting velocity vectorsApply · wrong
pace“can you go slower?”slow
modality“draw it for me”visual

Worked out from those facts, not stored

Subtracting velocity vectors: needs another look
Relative velocity: 2 of 7 key points checked · 5 not asked yet
Next lesson: slower, with a diagram, because you asked

General agent memoryDhee, for a tutor

What one memory isA sentence, or a summary of severalA typed fact about one moment

What counts as progressPages covered, blended into a scoreOnly a graded answer moves mastery

A topic nobody has testedLooks the same as a weak oneStays empty until someone asks

TimeThe newest memory winsForgetting is modelled, point by point

How it learns your preferencesInferred from how you soundOnly from what you actually said

How it remembers

Memory shaped like learning.

Five rules the tutor’s memory runs by. Watch what each one does to the same library.

replayEvery scene, re-scoredtoday

not asked yet
holding
needs another look
fading

01
Every moment is written down as a fact.
Page 24 for thirty-eight seconds. Vector subtraction, at Apply, wrong. Nine kinds of moment, each one typed, none of them a summary, and nothing rounded into a score.
02
Reading is not learning.
Turning pages outlines a topic; it never fills one in. A key point only fills when you answer on it, and a question that makes you apply an idea proves more than one that asks you to recall it.
03
Not asked is not the same as weak.
Two of seven points checked is two of seven, not 28%. The other five stay empty until someone asks. Red is kept for the ideas you actually got wrong, and only the idea, never the whole chapter.
04
It knows when you will start to forget.
A right answer spaced from the last one makes a memory last longer; five in one minute count once. When something you had begins to slip, it turns amber: two minutes of review, not another lesson.
05
It gets better without forgetting you.
Because only facts are kept, where you stand is worked out fresh every time you open Tura. When the model improves, your whole history is read again under the new one, so nothing drifts.

Inside Dhee

One layer stores. Everything else is worked out.

A good tutor remembers you.

Bring your notes and your papers. Dhee will remember the rest.

Start learning Dhee on GitHub

A tutor should remember what you know, not what you said.

Every moment is written down as a fact.

Reading is not learning.

Not asked is not the same as weak.

It knows when you will start to forget.

It gets better without forgetting you.

A good tutor remembers you.