: NLP Vocabulary: surface structure

NLP methods and tools > formal language theory > formal grammar > generative grammar > surface structure

surface structure

Allowing these different projections to simultaneously determine the surface structure seems at first blush to complicate the computational problem of generation but a moment of reflection will show that that is not necessarily so. (Kaplan, Netter, Wedekind & Zaenen, 1989)
Although the general architecture of surface structures results from the combination of projection and merge operations an additional mechanism is necessary to satisfy well-formedness conditions such as thematic assignment. (Wehrli, 2007)
It is also appealing as a challenging classification problem as the obvious representation to capture surface structure a bag of n-grams has been rendered nearly useless by the careful construction of the negative set. (Cherry & Quirk, 2008)
These differences lead to the two different surface structures but they do not affect the semantic interpretation of the structures which is the same for both. (Meijs & Vossen, 1991)

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