Boosting and Relevancy Scoring

When you search for something, you don't just want any results; you want the best results. This is where relevancy comes in!

Relevancy helps search engines, like Elasticsearch, decide which documents are most important or 'relevant' to your query and present them first.

In Elasticsearch, every document that matches your search query gets a numeric value called the _score. This score represents how relevant that document is to your query.

• A higher _score means the document is considered more relevant.
• Elasticsearch uses algorithms (like BM25) to calculate this score, considering factors like how often a term appears and its uniqueness.