Boolean queries in information retrieval

1. What are Boolean queries in information retrieval?
2. Which is the advantage of Boolean information retrieval?
3. How does Boolean retrieval work?
4. Which type of query can be used for data search and retrieval?

What are Boolean queries in information retrieval?

Boolean Queries :

Some IR systems allow using +, -, AND, OR, NOT, ( ), Boolean operators in combination of keyword formulations. No ranking is involved because a document either satisfies such a query or does not satisfy it. A document is retrieved for boolean query if it is logically true as exact match in document.

Which is the advantage of Boolean information retrieval?

(3) Advantages of the boolean retrieval model It is easy to implement. It is easy to understand why the document is retrieved or not. Users can determine whether the query is too specific or too broad.

How does Boolean retrieval work?

It is a simple retrieval model based on set theory and boolean algebra. Queries are designed as boolean expressions which have precise semantics. The retrieval strategy is based on binary decision criterion. The boolean model considers that index terms are present or absent in a document.

Which type of query can be used for data search and retrieval?

A select query is one that retrieves data from a database.