5 Easy Steps for Prompt Engineering with Large Language Models (LLMs)
May 23, 2023
We continue to be fascinated by innovative uses of Generative AI and marvel at the possibilities unlocked by ChatGPT. “Prompt engineering” has quickly become a skillset that business professionals, academics and everyday citizens apply to methodically generate content meeting specific criteria. This article will break down the Large Language Models (LLMs) that lie at the foundation of ChatGPT and similar applications, and we’ll review how to use prompt engineering to generate purpose-driven content.
LLMs are sophisticated machine learning models trained on vast amounts of text data, including books, articles and websites. These models, such as GPT-3 (Generative Pre-trained Transformer 3) developed by OpenAI, can generate text that is coherent and contextually relevant, making them capable of performing natural language processing (NLP) tasks like text generation, question answering and conversation generation.
Prompt engineering is a crucial step in effectively utilizing LLMs, as it involves designing input prompts that can guide the model to generate desired outputs.
Step-by-Step Guide for Prompt Engineering
- Define the desired output
Begin by clearly defining the desired output or response that you want the model to generate. This could be a specific type of text, a format or a specific answer to a question.
- Understand model capabilities
Familiarize yourself with the capabilities and limitations of the LLM you are working with. Understand the types of tasks it is designed for, the types of inputs it can accept and its default behavior when generating text.
- Consider context
Consider the context in which the prompt will be used. If it is part of a conversation or a larger system, include relevant context to help the model understand the context of the prompt.
- Use explicit instructions
Provide explicit instructions in the prompt to guide the model's behavior. Be clear and specific about what you want the model to do. You can use cues such as "imagine," "describe," "compare," "debate pros and cons," or "step-by-step" to guide the model's approach.
- Experiment and iterate
Experiment with different prompts and iterate based on the model's responses. Observe the output generated by the model, and if it is not meeting your desired criteria, revise and refine the prompt accordingly.
Prompt Engineering for a Text Generation Task Using an LLM
Desired output: Generate a creative story about a journey to a magical forest.
Prompt: "Write a creative story about a journey to a magical forest. Imagine yourself as the protagonist and describe the adventure in vivid detail. Include encounters with fantastical creatures, mysterious landmarks and unexpected twists in the story. Use your imagination to create a captivating narrative that transports the reader to the enchanting world of the magical forest."
In this example, the prompt clearly defines the desired output (a creative story about a journey to a magical forest) and provides explicit instructions to the model, guiding its behavior and encouraging imaginative storytelling. The prompt also sets the context, provides specific cues and uses vivid language to guide the model's creative output.
Remember, prompt engineering is an iterative process, and you may need to experiment and iterate to fine-tune the prompt and achieve the desired results with the LLM.
A word of caution: Generative AI is a powerful tool for creating content, but it poses certain risks, too. The outputs are open-ended, the training inputs are unknown, and the model is opaque and prone to errors. The technology has become almost as famous for its “hallucinations” and security risks as for the wonders that it can produce. Whatever content you produce using the tool, review it carefully and be thoughtful about how and where you use it.
That said, the simplest advice I can give for ChatGPT is this – try it. By giving it a shot and making it a daily routine to try new things, you’ll soon realize how easy it is to add productivity to everyday tasks and create content that meets your own personal specifications, whether for marketing materials, art projects or simply writing a story about a journey through a magical forest.