Syntactic theory that postulates "X-bar" (written "X̅" or "X′") categories of phrases

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4
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2answers
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Basic syntax notation

I'm a first-semester student in linguistics and I was wondering what the differences are between the following trees: (1) and (2) My course notes seem to stick with the first kind of notation but ...
6
votes
3answers
224 views

Is there practical application of X' theory in natural language processing?

I was taught X' theory in generative grammar lectures, only to find out that NLP uses mainly surface grammar-based theories, such as HPSG or statistical models such as hidden Markov models. Is X' of ...