Find grey literature and policy

Learn how our advanced search query builder works and which search strategies you can use in Overton Index. Our advanced...

Find similar policy documents using semantic search

Overton currently has over 650,000 topics connected to policy documents. Topics can be useful when trying to locate policy documents...

Overton’s full-text search function is powered by Elasticsearch. The default relevance scoring algorithm used by Elasticsearch is BM25, which is a version...

When you run a search in the ‘Search Policy Documents and Grey Literature’ search, you can view the results in...