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Information retrieval - Quiz
Contributed by: Mead
  • 1. Information retrieval is the process of obtaining relevant information from a collection of data. It involves searching for and retrieving data that is important, useful, and matches the user's information needs. Information retrieval systems utilize various techniques such as indexing, querying, and ranking to efficiently locate and present relevant information to users. These systems play a crucial role in making vast amounts of data accessible and manageable, enabling users to find, access, and make use of valuable information resources.

    What is a key component of information retrieval systems?
A) Indexing
B) Encryption
C) Compression
D) Decryption
  • 2. What is recall in information retrieval?
A) The security of data storage.
B) The speed of information processing.
C) The ability of a system to retrieve all relevant documents.
D) The accuracy of data retrieval.
  • 3. What is precision in information retrieval?
A) The type of information storage.
B) The speed of data retrieval.
C) The size of the data set.
D) The fraction of retrieved documents that are relevant.
  • 4. Which term refers to the process of expanding a search query to retrieve more relevant results?
A) Text mining
B) Query expansion
C) Algorithm optimization
D) Data compression
  • 5. What is stemming in information retrieval?
A) Reducing words to their root form.
B) Organizing data in a database.
C) Encrypting data for security.
D) Analyzing data patterns.
  • 6. What is a Boolean search in information retrieval?
A) A search based on numeric values.
B) A search for multimedia files.
C) A search using operators like AND, OR, NOT to refine results.
D) A search for encrypted data.
  • 7. Which term refers to the process of extracting information from unstructured text?
A) Algorithm optimization
B) Data compression
C) Text mining
D) Data encryption
  • 8. What is a term frequency-inverse document frequency (TF-IDF) in information retrieval?
A) An encryption key
B) A data storage method.
C) A data compression technique.
D) A statistical measure to evaluate the importance of a term in a document.
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