Carthalgo · For universities

Software for running a university.

Carthalgo is A Cubic's product for universities. It builds the whole timetable, and answers students' questions from their professors' own materials. We build each feature with the staff who will use it, then host and run it.

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Features: Timetabling · Grounded course chat
Hosting: Run by A Cubic. Nothing to install.
Course materials: French and English

Feature 01 · Timetabling

The whole timetable, built from your rules.

Enter your rooms, instructors, groups and their rules. Carthalgo builds a complete weekly timetable. If a rule changes, solve again, instead of editing by hand for a week.

Every hard rule holds — no double-booked room, no instructor in two places.
Preferences are balanced against each other, not ignored.
Review before publishing, then send every student and professor their own week.

Demo

Carthalgo

Professor picksSpring semester

Dr. Martin Algorithms ✓
Dr. Chen Databases + lab ✓
Dr. Silva Linear Algebra ✓
Dr. Weber Networks ✓
Dr. Rossi Operating Systems ✓
Dr. Novak Probability ✓
Dr. Costa Compilers lab ✓
Ms. Laurent English ✓

Constraints

Lunch 12:00–14:00 — no classes
Dr. Weber — not on Friday
Lab 2 — 24 seats max
SE-2A — max 6h per day

+ 19 more

8 picks · 23 constraints · 42 sessions to place

Loading picks, rooms and constraints Placing sessions Resolving conflicts Final checks

Solving — run 12

Mon Tue Wed Thu Fri 08:00 10:00 12:00 14:00 16:00 AlgorithmsB-104 Databases labLab 2 Linear AlgebraA-210 NetworksB-104 DatabasesA-113 ProbabilityA-210 Operating SystemsC-002 EnglishD-101 Compilers labB-201

Mon Tue Wed Thu Fri 08:00 10:00 12:00 14:00 16:00 Databases labLab 2 · SE-2A DatabasesA-113 · SE-1B DatabasesA-113 · SE-2A Databases labLab 2 · SE-1B Office hoursC-210

Run 12 — 100% placed · 0 hard violations

Feature 02 · Grounded course chat

Answers from the professor's own materials. Nothing else.

A student asks about a course they are enrolled in. The answer comes only from what that professor uploaded, with a link to the exact page or slide. If the answer is not in those materials, it says so instead of guessing — and that refusal is the point.

Every answer links to the page or slide it came from.
Scans, image-heavy slides and handwritten notes — not only clean PDFs.
Materials in French and English; questions in French, English, Arabic and derja.

Demo

Carthalgo Machine Learning

Why does my validation loss go up while the training loss keeps dropping?
That's overfitting — the model has started fitting noise in the training set. Stop training where the validation loss is lowest, or add regularisation.
- Lecture 5, p. 9
- Lab 3, p. 2
Who won the 2022 World Cup?
That isn't covered by this course's materials, so there is nothing here to answer it from.

Where it's going

Next: one service for each university.

Timetabling and course chat are the first two features, not the last. Next, each university gets one hosted service of its own — its data kept apart from other universities, nothing installed on site — with the timetable at its centre and new features added as they are ready.

More detail is on carthalgo.com.

Software for running a university.

The whole timetable, built from your rules.

Answers from the professor's own materials. Nothing else.

Next: one service for each university.

Tell us the problem. We'll build the fix.

Tell us the problem.
We'll build the fix.