Handling No-Answer and Long Docs
Chunking and confidence checks.
Sometimes There Is No Answer
Real questions often have no answer in the passage. A robust QA system should admit that instead of forcing a wrong guess. 🤔
The Null Answer Idea
Models trained for this learn a null answer option. When no span fits, they point to an empty answer rather than inventing one.
All lessons in this course
- Extractive vs Generative QA
- Running a QA Pipeline
- Finding Answer Spans in Context
- Handling No-Answer and Long Docs