If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

User history


A search engine collects the following search records for a user:
QueryUser IDDateURL
"board games"XE3AL0801/07/20boardgamegeek.com
"seafood recipes"XE3AL0802/23/20www.seafoodwatch.org/consumers/sustainable-recipes
"news without ads"XE3AL0802/27/20npr.org
Each record contains four pieces of information:
  1. The query typed into the search engine by the user
  2. A unique ID that identifies the user
  3. The date when the user typed the query
  4. The URL of the first result clicked by the user
In what way could the search engine personalize future search results based on this history?
👁️Note that there are 2 answers to this question.
Choose 2 answers: