other,17-4-J89-4003,ak The model appears capable of accommodating the sort of <term> reduplications </term> that have been observed to occur in <term> natural languages </term> , but it excludes many of the unnatural constructions that other formal models have permitted .
other,15-1-J89-4003,ak A model is presented to characterize the class of <term> languages </term> obtained by adding <term> reduplication </term> to <term> context-free languages </term> .
other,16-3-J89-4003,ak The class of <term> languages </term> generated is shown to lie strictly between the <term> context-free languages </term> and the <term> indexed languages </term> .
other,12-3-J89-4003,ak The class of <term> languages </term> generated is shown to lie strictly between the <term> context-free languages </term> and the <term> indexed languages </term> .
tech,4-2-J89-4003,ak The model is a <term> pushdown automaton </term> augmented with the ability to check <term> reduplication </term> by using the <term> stack </term> in a new way .
other,12-2-J89-4003,ak The model is a <term> pushdown automaton </term> augmented with the ability to check <term> reduplication </term> by using the <term> stack </term> in a new way .
other,3-3-J89-4003,ak The class of <term> languages </term> generated is shown to lie strictly between the <term> context-free languages </term> and the <term> indexed languages </term> .
tech,16-2-J89-4003,ak The model is a <term> pushdown automaton </term> augmented with the ability to check <term> reduplication </term> by using the <term> stack </term> in a new way .
other,9-1-J89-4003,ak A model is presented to characterize the class of <term> languages </term> obtained by adding <term> reduplication </term> to <term> context-free languages </term> .
other,9-4-J89-4003,ak The model appears capable of accommodating the sort of <term> reduplications </term> that have been observed to occur in <term> natural languages </term> , but it excludes many of the unnatural constructions that other formal models have permitted .
other,13-1-J89-4003,ak A model is presented to characterize the class of <term> languages </term> obtained by adding <term> reduplication </term> to <term> context-free languages </term> .
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