DLI-1: KNN-based Topic Detection
- Build training index with pre-labeled topics - 45000 Broadcast News stories from 1995 and 1996 - 3178 different news topics occurring > 10 times
- Search for top 10 related stories in training index
- Lookup topics for related stories
- Re-weight topics by story relevance (select top 5)
- At 5 topics, Recall - .491 Relevance - .482