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Boolean retrieval

AND, OR, NOT

Find all documents containing the terms and satisfying the conditions:

fh AND salzburg
mmt OR mma
mmt AND NOT mma
(information AND retrieval) OR search

Nomenclature

Documents
Books, chapters, pages, web pages, news posts...
Document collection, Corpus
All the documents
Terms
Like words, but maybe FH Salzburg and A1 as well
---

Will it match?

(information AND retrieval) OR search
  • ­ #1: a book about information retrieval → Match
  • ­ #2: a book about the search for information → Match
  • ­ #3: a book about information → No Match

Notes: Audience question


Interactive example

Make sure that the Elastic Stack is running.

Then try boolean retrieval in the Elasticsearch console.


Nomenclature

Information need
What the user is looking for:

I want to learn about information retrieval and search

Query
How the user talks to the computer:

(information AND retrieval) OR search

­ Voice assistants, ChatGPT bridge the gap between information need and query

Notes: