why are ambiguous grammars undesirable?
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Ambiguous grammars are undesirable because the derivation tree provides considerable information about the semantics of a program; conflicting derivation trees provide conflicting information. Ambiguity is a property of a grammar, and it is usually (but not always) possible to find an equivalent unambiguous grammar.
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['Unclosed quotes.', 'Missing or Extra parentheses.', 'Unclosed braces.', 'Missing semicolon.']
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Combining forms meaning no, none, missing, or absence of.
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The forms of language are sight and sound. The brain interprets the form to create meaning - which can be “literal” (as per a dictionary definition) or non-literal (as in a metaphor or irony). Grammar is a set of rules, and a language for explaining, the structures of sentences.
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All three are acceptable, though the two-word formation (I just learned whole researching this that two-word should be hyphenated, incidentally) is the most prone to confusion. Historically, the hyphenated version was preferred, but just turning it into one word is highly used as well.
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Every regular language is Turing-decidable and therefore Turing acceptable / recognisable (but note that Turing acceptable does not imply Turing decidable). ... One can construct a Turing Machine T that simulates D. T's states will be similar to D's.
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They always occur as a pair of phrases, joining various sentence elements that should be treated as grammatically equal and given parallel structure. The most familiar of these is the "either - or (neither -nor)" phrase because it includes common coordinating conjunctions as well.
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A Stream is returned rather than a single value to allow for ambiguity in the grammar (see below). It's worth mentioning that GLL is a form of recursive-descent parsing. ... In GLL parsing, the control flow follows that of the grammar, as it does in traditional parser combinators or any other form of recursive-descent.
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['Subject-Verb Agreement Errors. ... ', 'Sentence Fragments. ... ', 'Missing Comma After Introductory Element. ... ', 'Misusing The Apostrophe With “Its” ... ', 'No Comma In A Compound Sentence. ... ', 'Misplaced Or Dangling Modifier. ... ', 'Vague Pronoun Reference. ... ', 'Wrong Word Usage.']
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Guess is usually an imperative verb and a sentence using it that way should not end with a question mark. The publications that do have an editor who's asleep and didn't catch the error.
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compiler and low level languages like assembler). Clojure and many other lisp dialects have relatively low ambiguity as the code is written as an abstract syntax tree. ... An example of ambiguity in a high level language would be the operator precidence rules in JavaScript.
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ambiguous. Antonyms: univocal, obvious, plain, clear, unambiguous, indisputable, necessary, unmistakable, unequivocal, lucid. Synonyms: equivocal, vague, doubtful, enigmatical, uncertain, obscure, unintelligible, perplexing, indistinct, dubious.
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2 Answers. The most common phrasing is simply using "possible". It isn't a prefix but it is rather clear: This is a possible solution to our bug problem.
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"I" cannot be an object (a direct object, an indirect object, or an object of a preposition)... ever.
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Hungarian Making the list with 26 cases, Hungarian has some of the most difficult grammar rules you'll come across. In Hungarian, suffixes dictate tense and possession instead of the word order, which is how most European languages tackle the problem.
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3 Answers. Context-free Grammar (CFG) can be recognized by both 2-way linear bounded automata and push down automata .
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Natural Language processing is considered a difficult problem in computer science. It's the nature of the human language that makes NLP difficult. The rules that dictate the passing of information using natural languages are not easy for computers to understand.