LEANGOOGS AICredential verification

✓ Verified. This badge was issued by LEANGOOGS AI to Charles Migaya on 23 October 2026. The record is held by LEANGOOGS AI and cannot be edited by its holder.

Leangoogs AI · Digital Badge

This badge is awarded to

Charles Migaya

Level 2 Badge

Annotation Practice. Produces annotation to a defined professional standard. Awarded for passing every lesson of Level 2 at the 90% standard.

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LEAN-NGQ2BSPU3KS2

23 October 2026

Date issued

What this badge certifies

Awarded to
Charles Migaya
Badge
Level 2 Badge
Course
Level 2: Annotation Practice
Requirement met
Passed all 10 lesson assessments of Level 2, each at the 90% standard
Issued
23 October 2026
Credential ID
LEAN-NGQ2BSPU3KS2
Status
Valid
The 10 lessons this covers
  1. The annotation guideline as a controlled document
  2. Consistency and inter-annotator agreement
  3. Classification: applying categories under a decision procedure
  4. Transcription: verbatim standards and conventions
  5. Span and entity annotation
  6. Image annotation: boxes, polygons and occlusion
  7. Preference and ranking annotation
  8. Ambiguity and the escalation decision
  9. Quality assurance: gold standards, audit and feedback
  10. Throughput, fatigue and sustainable accuracy

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LEANGOOGS AI trains people across Africa and the wider Global South in AI data, annotation, evaluation and engineering. Credentials are issued automatically when the requirements are met and can be checked at any time at this address. About the programme