Pre-Terminal Symbol

See: Part-of-Speech Category.

References

(Elhadad, 2015) ⇒ Michael Elhadad (2015). https://www.cs.bgu.ac.il/~elhadad/nlp16/nlp03.html
- QUOTE: When processing words, we match them to a pre-terminal symbol (a rule mapping a single terminal word to a non-terminal). The pre-terminals are either provided by the CFG in the form of rules of the form (NT --> word) or they are "guessed" by the parser for unknown words (that is, words that do not appear in the CFG). We could model this mapping by using a part-of-speech tagger as described in the previous chapter.

(Wilson, 2012) ⇒ Bill Wilson (2012). NLP Dictionary: http://www.cse.unsw.edu.au/~billw/nlpdict.html#lexicat
- Synonymous with part-of-speech (POS). Also called a pre-terminal symbol. A kind of non-terminal symbol of a grammar - a non-terminal is a lexical symbol if it can appear in a lexical insertion rule. Examples are N, V, ADJ, PREP, INTERJ, ADV. Non-examples include NP, VP, PP and S (these are non-terminals). The term lexical category signifies the collection of all words that belong to a particular lexical symbol, for example, the collection of all Nouns or the collection of all ADJectives.
- Contrast with phrasal category.