Query Expansion

Query expansion is a technique used in search engines to improve the results a user gets. When someone enters a search term, the system adds related words or phrases to make the search broader and more effective. For example, if you search for "car," it might include "automobile," "vehicle," or "sedan" to find more relevant information. This helps account for different ways people might describe the same thing, increasing the chances of retrieving useful and comprehensive results. Essentially, query expansion makes the search smarter by understanding and including related terms.