Statistical Parsing Quiz

What is the main purpose of statistical parsing?

• To generate parse trees from unannotated text

• To identify syntactic ambiguity

• To assign probabilities to each parse tree

• To analyze semantic meaning

What is a Probabilistic Context Free Grammar (PCFG)?

• A grammar that uses dependency relations between words

• A grammar that only considers syntactic structure

• A grammar that focuses on word order in sentences

• A version of CFG with assigned probabilities to production rules

What is the purpose of Treebanks in statistical parsing?

• To pair each sentence with a parse tree

• To store information about different types of trees

• To analyze the frequency of words in sentences

• To identify the syntactic ambiguity in sentences

How is the probability of a sentence derived in statistical parsing?

• By comparing it with a predefined threshold

• By using a predefined formula

• By adding the probabilities of its productions

• By multiplying the probabilities of its productions

What is the purpose of the Viterbi algorithm in statistical parsing?

• To generate parse trees from unannotated text

• To efficiently determine the most probable derivation for a sentence

• To analyze semantic meaning

• To identify the syntactic ambiguity in sentences

What is the concept of 'Head Words' in syntactic parsing?

• Identifying the least important word in a phrase

• Identifying the most important word in a phrase

• Identifying the first word in a phrase

• Identifying the longest word in a phrase

What do Labeled Precision and Labeled Recall measure in parser evaluation?

• The correctness of punctuation in sentences

• The correctness of word choice in sentences

• The correctness of non-terminal labels on constituent nodes

• The correctness of word order in sentences

What is the main difference between Phrase-Structure Grammar and Dependency Grammar?

• There is no difference between the two

• Phrase-Structure Grammar focuses on word choice, while Dependency Grammar focuses on word order

• Phrase-Structure Grammar focuses on word order, while Dependency Grammar focuses on word choice

• Phrase-Structure Grammar focuses on identifying phrases and their recursive structure, while Dependency Grammar focuses on relations between words

What is the purpose of converting a phrase structure parse to a dependency tree?

• To identify the syntactic ambiguity in sentences

• To represent dependencies between words in a sentence

• To analyze semantic meaning

• To generate parse trees from unannotated text

What does a typed dependency parse indicate?

• Labels the relationship between words

• Indicates the frequency of words in a sentence

• Indicates the order of words in a sentence

• Only indicates which words depend on each other