Context Relevancy

OPENAI_API_KEY=your_api_key_here

import { openai } from "@ai-sdk/openai";
import { ContextRelevancyMetric } from "@mastra/evals/llm";

const context1 = [
  "Einstein won the Nobel Prize for his discovery of the photoelectric effect.",
  "He published his theory of relativity in 1905.",
  "His work revolutionized modern physics.",
];
 
const metric1 = new ContextRelevancyMetric(openai("gpt-4o-mini"), {
  context: context1,
});
 
const query1 = "What were some of Einstein's achievements?";
const response1 =
  "Einstein won the Nobel Prize for discovering the photoelectric effect and published his groundbreaking theory of relativity.";
 
console.log("Example 1 - High Relevancy:");
console.log("Context:", context1);
console.log("Query:", query1);
console.log("Response:", response1);
 
const result1 = await metric1.measure(query1, response1);
console.log("Metric Result:", {
  score: result1.score,
  reason: result1.info.reason,
});
// Example Output:
// Metric Result: { score: 1, reason: 'The context uses all relevant information and does not include any irrelevant information.' }

const context2 = [
  "Solar eclipses occur when the Moon blocks the Sun.",
  "The Moon moves between the Earth and Sun during eclipses.",
  "The Moon is visible at night.",
  "The Moon has no atmosphere.",
];
 
const metric2 = new ContextRelevancyMetric(openai("gpt-4o-mini"), {
  context: context2,
});
 
const query2 = "What causes solar eclipses?";
const response2 =
  "Solar eclipses happen when the Moon moves between Earth and the Sun, blocking sunlight.";
 
console.log("Example 2 - Mixed Relevancy:");
console.log("Context:", context2);
console.log("Query:", query2);
console.log("Response:", response2);
 
const result2 = await metric2.measure(query2, response2);
console.log("Metric Result:", {
  score: result2.score,
  reason: result2.info.reason,
});
// Example Output:
// Metric Result: { score: 0.5, reason: 'The context uses some relevant information and includes some irrelevant information.' }

const context3 = [
  "The Great Barrier Reef is in Australia.",
  "Coral reefs need warm water to survive.",
  "Marine life depends on coral reefs.",
  "The capital of Australia is Canberra.",
];
 
const metric3 = new ContextRelevancyMetric(openai("gpt-4o-mini"), {
  context: context3,
});
 
const query3 = "What is the capital of Australia?";
const response3 = "The capital of Australia is Canberra.";
 
console.log("Example 3 - Low Relevancy:");
console.log("Context:", context3);
console.log("Query:", query3);
console.log("Response:", response3);
 
const result3 = await metric3.measure(query3, response3);
console.log("Metric Result:", {
  score: result3.score,
  reason: result3.info.reason,
});
// Example Output:
// Metric Result: { score: 0.12, reason: 'The context only has one relevant piece, while most of the context is irrelevant.' }