Retrieval Modelling in Artificial Intelligence
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Questions and Answers

In the Boolean model framework, documents are composed of:

  • Sets of index terms
  • Probability distributions
  • Sets of documents (correct)
  • Vectors in a T-dimensional space

What is the primary purpose of index terms in a document?

  • To perform standard linear algebra operations on vectors
  • To provide a full text representation of the document
  • To apply Bayes' theorem for probabilistic modeling
  • To represent the theme of the document as a set of nouns (correct)

According to the Vector model framework, what kind of space is F composed of?

  • A set of index terms
  • A T-dimensional vectorial space (correct)
  • A probability distribution
  • A set of documents

What is the primary operation used in the Probabilistic model framework?

<p>Standard probability operations (D)</p> Signup and view all the answers

How do search engines typically represent documents?

<p>As a set of representative keywords or index terms (B)</p> Signup and view all the answers

What is a typical example of filtering retrieval?

<p>A news wiring service (C)</p> Signup and view all the answers

What is the purpose of the ranking function R (qi, dj)?

<p>To associate a real number with a query and a document representation (A)</p> Signup and view all the answers

What does the set Q represent in the IR model?

<p>Set of user information needs (A)</p> Signup and view all the answers

What is the difference between filtering retrieval and other types of retrieval?

<p>The stability of the user's information need (D)</p> Signup and view all the answers

What is the role of the framework F in the IR model?

<p>To model document representations, queries, and their relationships (D)</p> Signup and view all the answers

What is the primary purpose of adopting index terms in IR systems?

<p>To process queries and build an inverted file (B)</p> Signup and view all the answers

Why do users often get unsatisfied with IR systems?

<p>Because users have no training in query formation (B)</p> Signup and view all the answers

What is the primary goal of ranking in IR systems?

<p>To reflect the relevance of documents to the user query (C)</p> Signup and view all the answers

What is the main difference between ad hoc and filtering retrieval?

<p>Ad hoc retrieval is used for a single query, while filtering is used for a stream of documents (C)</p> Signup and view all the answers

What is a fundamental premise of IR models regarding relevance?

<p>All of the above (D)</p> Signup and view all the answers

What is the primary characteristic of filtering retrieval?

<p>It uses a user profile to filter documents (C)</p> Signup and view all the answers

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