Jev beginner course: from first principles to a testable workflow

One support ticket runs through the course. Learn the input and questions, inspect the official API, then design a fallback using labeled examples. About 60 minutes of reading; practice time varies.

Start lesson one Worked example: design a Jev workflow for a missing delivery

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CASE STUDY / 01

One ticket, the entire workflow

Follow one support ticket from raw text and verified facts through three questions, an illustrative answer, edge cases, and launch evaluation.

Read the worked example

01 · STATE客户说未收到 / missing parcel02 · QUESTIONSChoice + Noul + Score03 · ACTIONroute / review / gather facts

Understand the boundary

01What is Jev?Jev reads state and predefined questions to return typed answers. Learn the suitable tasks, limits, and what code must still do.5 min

Design state and questions

02How to design Jev state: from raw text to usable factsScope the facts, add necessary context, remove sensitive data, and test four edge cases.9 min 03Choice, Score, and NoulChoose by the shape of the answer: category, ordered scale, or probability of a statement.6 min

Read the answer

04How to read Jev answers: Choice, Score, and NoulRead answers, choice, score, noul, probabilities, and confidence without confusing output with action.8 min

Integrate and validate

05Your first API callUse the official state, model, and questions structure to make a first call and inspect its answer.7 min 06Confidence and fallbackUse probabilities to route work without mistaking them for a guarantee of correctness.5 min 07Nine common Jev beginner mistakes and how to diagnose themTroubleshoot question design, answer reading, keys, fallback, and pre-launch validation.10 min 08From Jev demo to deployment: examples, thresholds, and fallbackUse a reproducible evaluation sheet to inspect costly errors, review rate, and end-to-end cost.12 min

Practice

Predict before revealing

A customer says a parcel was marked delivered but is missing. What should code verify before calling the model?

This is a knowledge exercise and does not call Jev. The explanation is instructional.

CURATED RESOURCES / 03

Jev learning resources: three independent sites mapped

Use Playground for real runs, Manual for downloadable programs, and Learn Jev for patterns and reliability. Each entry links to the original and to a matching primer here.

Topic directory

Use cases Jev vs LLM: a fair comparison