Commentary by Chris Pressey
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Linguistics
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### Essentials of English Grammar

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### English Transformational Grammar

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### Modern English Linguistics

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### Towards a Semantic Description of English

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### An Introduction to Unification-based Approaches to Grammar

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### The Language Complexity Game

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CFG is in P but is not P-complete.

But CFG is not quite enough it seems.

CSG is PSPACE-complete.  That's way too big.

It makes sense that evolutionarily there would be a tension between
maximizing expressivity and minimizing complexity.

Thus, the mildly context-sensitive languages.

RCG is P-complete.

### ACL Anthology - ACL Anthology

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