What is a top-down parser? a) Begins by hypothesizing a sentence (the symbol S) and successively predicting lower level constituents until individual preterminal symbols are written b) Begins by hypothesizing a sentence (the symbol S) and successively predicting upper level constituents until individual preterminal symbols are written c) Begins by hypothesizing lower level constituents and successively predicting a sentence (the symbol S) d) Begins by hypothesizing upper level constituents and successively predicting a sentence (the symbol S)

What is a top-down parser?
a) Begins by hypothesizing a sentence (the symbol S) and successively predicting lower level constituents
until individual preterminal symbols are written
b) Begins by hypothesizing a sentence (the symbol S) and successively predicting upper level
constituents until individual preterminal symbols are written
c) Begins by hypothesizing lower level constituents and successively predicting a sentence (the symbol S)
d) Begins by hypothesizing upper level constituents and successively predicting a sentence (the symbol S)
by

1 Answer

Answer :

a) Begins by hypothesizing a sentence (the symbol S) and successively predicting lower level constituents
until individual preterminal symbols are written
by

Related questions

What is a top-down parser? a) Begins by hypothesizing a sentence (the symbol S) and successively predicting lower level constituents until individual pre-terminal symbols are written b) Begins by hypothesizing a sentence (the symbol S) and successively predicting upper level constituents until individual pre-terminal symbols are written c) Begins by hypothesizing lower level constituents and successively predicting a sentence (the symbol S) d) Begins by hypothesizing upper level constituents and successively predicting a sentence (the symbol S)

Description : What is a top-down parser? a) Begins by hypothesizing a sentence (the symbol S) and successively predicting lower level constituents until individual pre-terminal symbols are written b) ... d) Begins by hypothesizing upper level constituents and successively predicting a sentence (the symbol S)

Last Answer : a) Begins by hypothesizing a sentence (the symbol S) and successively predicting lower level constituents until individual pre-terminal symbols are written

Which of the following is FALSE ? (A) The grammar S ⟶ aSb|bSa|SS|∈, where S is the only non-terminal symbol and ∈ is the null string, is ambiguous. (B) SLR is powerful than LALR. (C) An LL(1) parser is a top-down parser. (D) YACC tool is an LALR(1) parser generator.

Description : Which of the following is FALSE ? (A) The grammar S ⟶ aSb|bSa|SS|∈, where S is the only non-terminal symbol and ∈ is the null string, is ambiguous. (B) SLR is powerful than LALR. (C) An LL(1) parser is a top-down parser. (D) YACC tool is an LALR(1) parser generator.

Last Answer : (B) SLR is powerful than LALR.

What is the process in which a buyer posts its interest in buying a certain quantity of items, and sellers compete for the business by submitting successively lower bids until there is only one seller left? a. B2B marketplace b. Intranet c. Reverse auction d. Internet

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Which of the following derivations does a top-down parser use while parsing an input string ? The input is scanned from left to right. (A) Leftmost derivation (B) Leftmost derivation traced out in reverse (C) Rightmost derivation traced out in reverse (D) Rightmost derivation

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The corresponding Existential Instantiation rule: for the existential quantifier is slightly more complicated. For any sentence a, variable v, and constant symbol k that does not appear elsewhere in the knowledge base. a) True b) False

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Which is the correct statement(s) for Non Recursive predictive parser? S1: First(α) = {t | α => * t β for some string β } => *tβ S2: Follow(X) = { a | S => * αXa β for some strings α and β } (A) Both statements S1 and S2 are incorrect. (B) S1 is incorrect and S2 is correct. (C) S1 is correct and S2 is incorrect. (D) Both statements S1 and S2 are correct.

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In partial order plan. A. Relationships between the actions of the behavior are set prior to the actions B. Relationships between the actions of the behavior are not set until absolutely necessary Choose the correct option. a) A is true b) B is true c) Either A or B can be true depending upon situation d) Neither A nor B is true

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Which is created by using single propositional symbol? a) Complex sentences b) Atomic sentences c) Composition sentences d) None of the mentioned

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Mr. Sharma decided to walk down the escalator of a tube station. He found that if he walks down 26 steps, he requires 30 seconds to reach the bottom. However, if he steps down 34 stairs he would only require 18 seconds to get to the bottom. If the time is measured from the moment the top step begins to descend to the time he steps off the last step at the bottom, find out the height of the stair way in steps?

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Last Answer : Answer: 46 steps.

Why do I have to wait until my period begins to start taking the pill?

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A) Knowledge base (KB) is consists of set of statements. B) Inference is deriving a new sentence from the KB. Choose the correct option. a) A is true, B is true b) A is false, B is false c) A is true, B is false d) A is false, B is true

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