n.

a commissioned officer who has been promoted from enlisted status

an enlisted soldier who serves in the ranks of the armed forces

Rankers over infinite words
Rankers over Infinite Words
Learning to select rankers
Rankers over Infinite Words (Extended Abstract)
Linear combination of rankers
ON SAMPLING FROM A POPULATION OF RANKERS
Combining log-based rankers and document-based rankers for searching
Combining Probability-Based Rankers for Action-Item Detection.
Pseudo test collections for training and tuning microblog rankers
Discourse Connective Argument Identification with Connective Specific Rankers