Chunk Utilization

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Evaluation Using Interface

Input:

• Required:
  • context: The contextual information provided to the model.
  • output: The response generated by the language model.
• Optional:
  • input: The original query or instruction given to the model.

Output:

• Score: A percentage score between 0 and 100.

Interpretation:

• Higher scores: Indicate that the model effectively and extensively incorporated the provided context into its response.
• Lower scores: Suggest that the model minimally used or ignored the provided context.

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Evaluation Using Python SDK

Click here to learn how to setup evaluation using the Python SDK.

from fi.testcases import TestCase
from fi.evals.templates import ChunkUtilization

test_case = TestCase(
    context=[
        "Paris is the capital and largest city of France.",
        "France is a country in Western Europe.",
        "Paris is known for its art museums and fashion districts."
    ],
    output="According to the provided information, Paris is the capital city of France. It is a major European city and a global center for art, fashion, and culture.",
    input="What is the capital of France?"
)

template = ChunkUtilization()

response = evaluator.evaluate(eval_templates=[template], inputs=[test_case])

print(f"Score: {response.eval_results[0].metrics[0].value}")
print(f"Reason: {response.eval_results[0].reason}")

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What to Do When Chunk Utilization Score is Low

• Ensure that the context provided is relevant and sufficiently detailed for the model to utilise effectively.
• Modify the input prompt to better guide the model in using the context. Clearer instructions may help the model understand how to incorporate the context into its response.
• If the model consistently fails to use context, it may require retraining or fine-tuning with more examples that emphasise the importance of context utilization.

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Differentiating Chunk Utilization with Chunk Attribution

Chunk Attribution assesses whether the model acknowledges and references the provided context at all, yielding a binary result: Pass if the context is used, or Fail if it is not. In contrast, Chunk Utilization evaluates how effectively the model incorporates that context into its response, producing a score that reflects the depth of its reliance on the information. While Attribution checks if the context was used, Utilization measures how well it was used to generate a meaningful and informed output.