Problem
Scenario
You're working on an NLP system that needs to identify structured facts like people, organizations, locations, dates, and product names directly from raw text. A common way to do this is named entity recognition.
Question
What is named entity recognition?
What This Tests
- Understanding of named entity recognition as a sequence labeling task
- How tokenization interacts with entity boundaries
- How transformer language models are fine-tuned for token classification
- How NER systems are evaluated with span-level F1
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