Regular Expressions and Text Processing Quiz

What is the purpose of regular expressions?

• To specify text strings

• To create visual representations

• To analyze numerical data

• To generate random text

What does the caret (^) signify in regular expressions?

• Start of a line

• End of a line

• A space character

• Any digit

Which of the following is a valid regular expression for matching an uppercase letter?

• [0-9]

• [A-Z]

• [^A-Z]

• [a-z]

What does the pipe symbol (|) represent in regular expressions?

• Repetition

• Disjunction

• Negation

• Concatenation

In the context of regular expressions, what does the question mark (?) indicate?

• Optional previous character

• None of the above

• Zero or more of the previous character

• One or more of the previous character

What is the function of capture groups in regular expressions?

• To replace text in a string

• To match only specific characters

• To ignore certain patterns

• To group patterns for reference

What is the primary goal of text normalization in NLP?

• To analyze sentence structure

• To standardize text formats

• To increase the size of the vocabulary

• To generate random text

Which of the following is NOT a method of word normalization?

• Case folding

• Tokenization

• Stemming

• Lemmatization

What does the term 'token' refer to in text processing?

• An instance of a word in text

• A punctuation mark

• A unique word type

• A sentence fragment

What is the purpose of Byte Pair Encoding (BPE) in tokenization?

• To count word frequencies

• To segment text into sentences

• To analyze grammatical structures

• To merge frequently adjacent symbols