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Amazon Augmented AI (A2I)

  • Amazon A2I is a service that helps you easily integrate human reviews in a machine learning workflow.
  • Simplifies managing a large number of human reviewers at scale.
  • Has direct integration with Amazon Textract and Amazon Rekognition

Common Use Cases:

  • Content Moderation where human oversight is required to judge uncertain results from a machine learning model.
  • Manual reviews of low confidence predictions due to documents that are scanned poorly or contain bad handwriting.
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  • Task type
    • Type of task to be reviewed.
    • Available task types
      • Key-value pairs extracted by Amazon Textract
      • Unsafe content flagged by Amazon Rekognition
      • Custom machine learning workflows
  • Worker task template
    • This template lets you define a set of instructions for your workers whenever they perform a task.
  • Worker types
    • Amazon Mechanical Turk – a crowdsourcing service that allows you to outsource jobs to an on-demand 24×7 distributed workforce online.
    • Private – A group of workers that you have sourced yourself (e.g., internal employees)
    • Vendor – Third-party vendors from AWS Marketplace that offer human review services.


  • $0.02 – $0.03 per reviewed image from Amazon Rekognition
  • $0.02 – $0.03 per reviewed page from Amazon Textract
  • $0.02 – $0.08 per reviewed objects from Custom workflows

Note: If you are studying for the AWS Certified Machine Learning Specialty exam, we highly recommend that you take our AWS Certified Machine Learning – Specialty Practice Exams and read our Machine Learning Specialty exam study guide.

AWS Certified Machine Learning Specialty Practice Exams


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