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