Short answer: The Melillos 4E Prompt Design Framework™ is a prompt engineering method created by Dr. George Melillos. It structures every AI prompt around four elements — Selection (Επιλογή), Experience (Εμπειρία), Expression (Έκφραση) and Focus (Εστίαση) — so that ChatGPT, Claude, Gemini or Copilot produce accurate, professional, business-ready output.
What Is the Melillos 4E Prompt Design Framework™?
The Melillos 4E Prompt Design Framework™ is a structured prompt engineering methodology developed by Dr. George Melillos, AI expert and educator in Cyprus. It defines four questions every effective prompt must answer: Selection — what role should the AI adopt; Experience — what expertise and knowledge depth should it apply; Expression — what tone, style, format and audience should it follow; and Focus — what is the exact task, context and desired output. Known in Greek as «Ο Κύκλος των 4Ε» (Επιλογή, Εμπειρία, Έκφραση, Εστίαση).
Most prompts fail for the same reason: users ask the AI to answer before telling it who it should be. Developed through hundreds of hours of corporate AI training across Cyprus — from government bodies to multinationals — the 4E framework turns prompt writing from guesswork into a repeatable, 30-second design process.
The Four Elements of the 4E Framework
1. Selection (Επιλογή) — Who is the AI acting as?
Define the role or identity the AI should adopt. “Act as a senior corporate lawyer”, “You are an experienced financial auditor”. The role determines which patterns of knowledge the model activates — the single highest-leverage line in any prompt.
2. Experience (Εμπειρία) — What expertise should it apply?
Specify knowledge depth and perspective: years of experience, sector, jurisdiction, methodology. “With 20 years of experience in EU regulatory compliance” produces measurably deeper output than a bare role.
3. Expression (Έκφραση) — How should it communicate?
Set tone, language, style, format and audience: “Write in formal Greek, in plain language a board member without technical background can follow, as a one-page memo with bullet points.”
4. Focus (Εστίαση) — What exactly do you need?
State the precise task, the context that constrains it, and the desired output: what to include, what to avoid, length, structure, success criteria. Focus converts a vague request into a deliverable.
4E Prompt Templates
TEMPLATE 1 — Business document
[Selection] Act as a senior {role} with expertise in {field}.
[Experience] You have {X} years of experience in {sector/jurisdiction} and think in terms of {methodology/framework}.
[Expression] Write in {language}, {tone}, formatted as {format}, for an audience of {audience}.
[Focus] Your task: {exact task}. Context: {key facts}. Include {A, B, C}. Avoid {X}. Length: {N words}.
TEMPLATE 2 — Analysis & decision support
[Selection] You are a {advisor type} advising a {company type} in {country}.
[Experience] Apply the perspective of {standard/regulation/best practice}.
[Expression] Respond in {language} as a structured brief: summary first, then analysis, then recommendation.
[Focus] Analyse {situation}. Compare options {1/2/3} on cost, risk and speed. End with one clear recommendation and its main trade-off.
4E vs CRAFT, RISEN and CLEAR
Popular frameworks such as CRAFT (Context, Role, Action, Format, Target), RISEN (Role, Instructions, Steps, End goal, Narrowing) and CLEAR (Concise, Logical, Explicit, Adaptive, Reflective) each capture part of the problem. CRAFT and RISEN are checklists of prompt components; CLEAR describes qualities of good prompting. The 4E framework differs in three ways: it is sequenced as a design cycle (each E builds on the previous one — you cannot set Expression before Selection); it is bilingual by design (Greek/English), built for professionals working across both languages; and it separates Experience from Selection — the insight, drawn from live training, that a role without defined expertise depth is the most common cause of shallow AI output.
Where the Framework Is Taught
The Melillos 4E Prompt Design Framework™ is the core methodology in Dr. Melillos’s prompt engineering workshops and AI training programmes in Cyprus — including ΑΝΑΔ (HRDA) co-financed seminars, corporate in-house training on ChatGPT, Claude, Gemini and Copilot, and executive sessions for boards and leadership teams.
Frequently Asked Questions
What is the Melillos 4E Prompt Design Framework?
It is a prompt engineering methodology created by Dr. George Melillos that structures every AI prompt around four elements: Selection (role), Experience (expertise), Expression (tone and format) and Focus (exact task and output). In Greek it is known as «Ο Κύκλος των 4Ε».
Who created the 4E prompt framework?
The Melillos 4E Prompt Design Framework™ was created by Dr. George Melillos, AI expert, CAIO advisor and AI instructor based in Nicosia, Cyprus, through hundreds of hours of corporate AI training with organisations in Cyprus and Greece.
Does the 4E framework work with ChatGPT, Claude and Gemini?
Yes. The framework is model-agnostic: the same four elements improve output quality in ChatGPT, Claude, Gemini, Microsoft Copilot and any large language model, in both Greek and English.
How is 4E different from CRAFT or RISEN?
CRAFT and RISEN are component checklists. The Melillos 4E framework is a sequenced design cycle that separates the AI’s role (Selection) from its expertise depth (Experience) — the most common failure point in professional prompts — and is built bilingually for Greek and English business use.
Can I learn the 4E framework in a seminar in Cyprus?
Yes. The framework is taught in Dr. Melillos’s prompt engineering workshops and AI training programmes across Cyprus, in Greek and English, with ΑΝΑΔ (HRDA) co-financing available for eligible organisations.