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Data Annotation & LabelingBeginnerTier 1 · $25

Text Entity Tagging

Named-entity spans, boundary precision and overlapping label sets in text datasets.

3 modules120 minutes of material10 exam questions · 80% to pass

Syllabus

01Span boundaries

40 min
  • Mark the exact first and last token
  • Decide on determiners and possessives

02Nested and discontinuous entities

45 min
  • Handle entities inside entities
  • Tag entities split across clauses

03Label disciplines

35 min
  • Keep to the agreed label set
  • Document a genuinely unlabelled case

Assessed concepts

The exam tests these directly. Definitions are summarised here; the exact answer key stays on the server.

Span boundary

Nested entity

Discontinuous entity

Label set discipline

Tokenization edge case

Certificate fee

$25

Charged only after you pass. Studying, practice and the exam are free.

Start module one

Exam attemptsUnlimited

Certificate validityNo expiry

VerificationPublic API

Refund window30 days

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