1. : What is the primary purpose of an Information Retrieval System?
(A) To store data permanently
(B) To retrieve relevant information from a collection of data
(C) To classify documents only
(D) To perform data entry
2. : Which of the following is NOT a component of an Information Retrieval System?
(A) User interface
(B) Indexing subsystem
(C) Storage subsystem
(D) Printing subsystem
3. : The term “information retrieval” was first coined by:
(A) Melvil Dewey
(B) Calvin Mooers
(C) Vannevar Bush
(D) Eugene Garfield
4. : What is a document surrogate?
(A) The full document text
(B) A representation of a document used for retrieval
(C) The document author
(D) The storage location of a document
5. : Which of the following is an example of an Information Retrieval System?
(A) MS Word
(B) OPAC
(C) Excel
(D) Photoshop
6. : The key process of an Information Retrieval System is:
(A) Data encryption
(B) Matching user queries with indexed documents
(C) Image editing
(D) File compression
7. : The effectiveness of an Information Retrieval System is measured by:
(A) Storage size
(B) Precision and recall
(C) Number of users
(D) Network speed
8. : Precision in Information Retrieval refers to:
(A) Ratio of relevant documents retrieved to total documents retrieved
(B) Ratio of retrieved documents to total documents
(C) Ratio of relevant documents retrieved to total relevant documents
(D) None of the above
9. : Recall in Information Retrieval refers to:
(A) Ratio of total documents retrieved to total documents in the system
(B) Ratio of relevant documents retrieved to total relevant documents in the collection
(C) Ratio of users to documents
(D) None of the above
10. : Boolean retrieval uses which operators?
(A) +, -, =
(B) AND, OR, NOT
(C) IF, THEN, ELSE
(D) ADD, REMOVE, FILTER
11. : The model that represents documents and queries as vectors in a multi-dimensional space is called:
(A) Boolean Model
(B) Vector Space Model
(C) Probabilistic Model
(D) Cluster Model
12. : In the Vector Space Model, the similarity between documents and queries is measured by:
(A) Cosine similarity
(B) Euclidean distance only
(C) Keyword count
(D) Title matching
13. : Which model assumes that the probability of relevance can be estimated?
(A) Boolean Model
(B) Vector Model
(C) Probabilistic Model
(D) Citation Model
14. : Which component of an IRS is responsible for storing document representations?
(A) Query Processor
(B) Inverted Index
(C) User Interface
(D) Display Module
15. : What is an inverted file in Information Retrieval?
(A) A list of authors
(B) A data structure linking terms to documents
(C) A list of books in alphabetical order
(D) A thesaurus of terms
16. : In a Boolean search, “AND” operator retrieves:
(A) Documents containing both terms
(B) Documents containing any of the terms
(C) Documents excluding both terms
(D) All documents
17. : Relevance feedback in an IRS helps to:
(A) Re-index documents
(B) Improve search results based on user feedback
(C) Delete irrelevant records
(D) Rank documents randomly
18. : OPAC stands for:
(A) Online Public Access Catalog
(B) Online Publication Access Code
(C) Open Public Archive Catalog
(D) Official Public Access Center
19. : A thesaurus in Information Retrieval is used for:
(A) Storing full documents
(B) Controlling synonyms and relationships between terms
(C) Translating documents
(D) Summarizing abstracts
20. : The ranking of documents in an IRS is generally based on:
(A) Document size
(B) Frequency of query terms
(C) Author popularity
(D) Alphabetical order
21. : Stop words in Information Retrieval are:
(A) Rare words used frequently
(B) Common words usually ignored in indexing
(C) Special terms in thesauri
(D) Technical jargon
22. : Stemming in Information Retrieval means:
(A) Adding prefixes to words
(B) Removing suffixes to get root words
(C) Translating words
(D) Rearranging document titles
23. : An example of an Information Retrieval software is:
(A) CDS/ISIS
(B) MS Excel
(C) PowerPoint
(D) CorelDRAW
24. : Which retrieval model uses probabilities to determine relevance?
(A) Vector Space Model
(B) Probabilistic Model
(C) Boolean Model
(D) Cluster Model
25. : The query formulation process involves:
(A) Creating a search statement using keywords and operators
(B) Cataloging documents
(C) Indexing records
(D) Editing text
26. : Term Frequency (TF) means:
(A) Number of terms in a collection
(B) Number of times a term appears in a document
(C) Number of documents retrieved
(D) Number of queries processed
27. : The main advantage of full-text retrieval systems is:
(A) High recall
(B) Small storage
(C) Easy indexing
(D) Limited vocabulary
28. : Natural Language Processing (NLP) in IRS helps in:
(A) Image compression
(B) Understanding user queries in natural language
(C) Generating metadata automatically
(D) Sorting library books
29. : In modern retrieval systems, ranking algorithms are used to:
(A) Randomly order documents
(B) Rank documents based on relevance to the query
(C) Store documents
(D) Assign classification numbers
30. : The main challenge in Information Retrieval is:
(A) Storing images
(B) Balancing precision and recall
(C) Managing finances
(D) Printing reports