Bottom-up parsing
PARSING APPROACH THAT STARTS FROM THE LEAF NODES OF A TREE AND WORKS IN UPWARD DIRECTION TILL IT REACHES THE ROOT NODE
Bottom-up parser; Bounded-context parser
In computer science, parsing reveals the grammatical structure of linear input text, as a first step in working out its meaning. Bottom-up parsing recognizes the text's lowest-level small details first, before its mid-level structures, and leaving the highest-level overall structure to last.