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Mr. Dubey • 100.69K Points
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Q. 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)
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Explanation by: Mr. Dubey
a top-down parser begins by hypothesizing a sentence (the symbol s) and successively predicting lower level constituents until individual preterminal symbols are written.

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