ambiguity is one of very important techniques in persian rhetoric, but in spite of its importance, it seems there is not enough accuracy in its definition and types.  the present essay tries to redefine the concept of ambiguity. we will begin by analyzing the definitions of ambiguity and amphiboly according to the old and new persian sources; then we presents a new definition and review and ana...

Lexical co-occurrence statistics are becoming widely used in the syntactic analysis of unconstrained text. However, analyses based solely on lexical relationships suffer from sparseness of data: it is sometimes necessary to use a less informed model in order to reliably estimate statistical parameters. For example, the "lexical association" strategy for resolving ambiguous prepositional phrase ...

From a certain (admittedly narrow) perspective, one of the annoying features of natural language is the ubiquitous syntactic ambiguity. For a computational model intended to assign syntactic descriptions to natural language text, this seem like a design defect. In general, when context and lexical content are taken into account, such syntactic ambiguity can be resolved: sentences used in contex...

Okhotin showed an exponential trade-off in the conversion from nondeterministic unary automata to unambiguous nondeterministic unary automata. We show that the trade-off in the case of unary symmetric difference automata to finitely (structurally) ambiguous unary symmetric difference automata is linear with constant 1 in the number of states. In particular, for every n-state unary nondeterminis...

Recently, dependency grammar has become quite popular in relatively free word-order languages. We encounter many structural ambiguities when parsing a sentence using dependency grammar. We use a chunking procedure to avoid constructing a mistaken dependency structure. Chunking reduces the scope of dependency relations between dependents and governors. This paper presents a method to resolve amb...