Information Retrieval Quiz

Which of the following is not a component of an information retrieval system?

• Query processing

• Indexing

• Ranking

• Data analytics

Which of the following is not a step in index construction?

• Tokenization

• Stop word removal

• Query expansion

• Stemming

A group of related documents against which information retrieval is employed is called:

• Corpus

• Text Database

• Index Collection

• Repository

In information retrieval, extremely common words which would appear to be of little value in helping select documents that are excluded from the index vocabulary are called:

• stop word

• tokens

• lemmatized words

• stemmed words

The heuristic process of cutting off one or few letters from the end of words to extract the root words from inflected words is called

• Lemmatization

• Stemming

• Inverted index

• Case folding

A data structure that maps terms back to the parts of a document in which they appear is called

• Lexicon

• Dictionary

• Inverted index

• All of the above

How the information retrieval problem can be defined formally?

• a triple

• a quadruple

• a couple

• None of the above

An instance of a sequence of characters in the particular document that are grouped together as a useful semantic unit for processing is called as

• Type

• Term

• Token

• Index

________ is a sequence of single-word queries.

• Phrase

• Pattern

• Sentence

• Keywords

The process of removing most common words (and, or, the, etc.) by an information retrieval system before indexing is known as

• Lemmatization

• Stop word removal

• Inverted indexing

• Normalization