Browsing Computer Science and Artificial Intelligence Lab (CSAIL) by Subject "complexity"
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A Comparative Analysis of Reinforcement Learning Methods
(1991-10-01)This paper analyzes the suitability of reinforcement learning (RL) for both programming and adapting situated agents. We discuss two RL algorithms: Q-learning and the Bucket Brigade. We introduce a special case of the ...
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Computational Structure of GPSG Models: Revised Generalized Phrase Structure Grammar
(1989-09-01)The primary goal of this report is to demonstrate how considerations from computational complexity theory can inform grammatical theorizing. To this end, generalized phrase structure grammar (GPSG) linguistic theory ...
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GPSG-Recognition is NP-Hard
(1985-03-01)Proponents of generalized phrase structure grammar (GPSG) cite its weak context-free generative power as proof of the computational tractability of GPSG-Recognition. Since context-free languages (CFLs) can be parsed ...