Machine Learning, Information Retrieval.
quick | x | | | brown | x | | | fox | x | x | | jumps | x | | | over | x | | | lazy | x | | | dog | x | | | number | | x | | one | | x | | cable | | x | | news | | x | | channel | | x | +---------+-------+------+ From the table, it can be seen that the system returns doc 1 for a query “quick”, doc