[amp_mcq option1=”Top-down and bottom-up parsing” option2=”Interpretation and communication” option3=”Roll-up and roll-down” option4=”None of the mentioned” correct=”option1″]
The correct answer is: A. Top-down and bottom-up parsing.
Parsing is the process of analyzing a string of characters to determine its grammatical structure. There are two main types of parsing: top-down parsing and bottom-up parsing.
Top-down parsing starts with the goal of constructing a parse tree for the entire sentence. It then tries to match the next token in the sentence to the root of a possible parse tree. If a match is found, the parser then recursively parses the subtree rooted at that token. This process continues until the entire sentence has been parsed.
Bottom-up parsing starts with the individual tokens in the sentence and tries to build up a parse tree from them. It does this by repeatedly combining smaller subtrees into larger subtrees until the entire sentence has been parsed.
Both top-down and bottom-up parsing are powerful techniques for analyzing the structure of sentences. However, they each have their own strengths and weaknesses. Top-down parsing is typically faster than bottom-up parsing, but it can be more difficult to implement correctly. Bottom-up parsing is typically easier to implement correctly, but it can be slower than top-down parsing.
The other options are incorrect because they are not types of parsing. Interpretation and communication are not types of parsing, and roll-up and roll-down are not terms that are used in the context of parsing.