Information Retrieval

Which of the following is not a classical model of information retrieval?

• Boolean

• Cluster

• Probablistic

• Vector Space

A model of information retrieval in which we can pose any query in which search terms are combined with the operators AND, OR, and NOT:

• Ad Hoc Retrieval

• Ranked Retrieval Model

• Boolean Retrieval Model

• Proximity Query Model

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

• Dictionary

• List

• Incidence Matrix

• Inverted Index

The model of information retrieval in which we can pose any query in the form of a Boolean expression is called the ranked retrieval model.

• True

• False

The number of times that a word or term occurs in a document is called the:

• Proximity Operator

• Vocabulary Lexicon

• Term Frequency

• Indexing Granularity

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 Words

• Tokens

• Lemmatized Words

• Stemmed Terms

Stemming increases the size of the vocabulary.

• True

• False

What are the documents returned by the query

happy AND live

• d1

• d4

• d1, d4

• None of the above