Essay

Explain human label usage for estimating optimal error rate

Question: Based on Machine Learning Yearning, explain how a machine learning practitioner can use human labels to estimate the optimal error rate for a model. What types of tasks is this method suitable for, and what specific measurement needs to be taken?

Sample answer: For tasks that humans are naturally skilled at, such as recognizing pictures or transcribing audio clips, a practitioner can ask a human to label a dataset. By measuring the accuracy of these human-provided labels relative to the training set, one obtains a baseline estimate of the optimal error rate for the task.

Key points:

  • Tasks humans are reasonably good at
  • Ask a human to provide labels
  • Measure accuracy of human labels relative to the training set

Rubric: A full-credit answer must identify the types of tasks suitable for this approach (human-friendly tasks like image recognition or audio transcription), the action required (having a human provide labels), and the calculation needed (measuring human accuracy against the training set).

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Updated 2026-05-27

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Supervised Learning

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Data Science

Machine Learning Strategy

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