- 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 ability of a system to retrieve all relevant documents.
B) The accuracy of data retrieval.
C) The security of data storage.
D) The speed of information processing.
- 3. What is precision in information retrieval?
A) The type of information storage.
B) The size of the data set.
C) The speed of data retrieval.
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) Algorithm optimization
C) Data compression
D) Query expansion
- 5. What is stemming in information retrieval?
A) Reducing words to their root form.
B) Analyzing data patterns.
C) Encrypting data for security.
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 using operators like AND, OR, NOT to refine results.
D) A search based on numeric values.
- 7. Which term refers to the process of extracting information from unstructured text?
A) Data compression
B) Text mining
C) Algorithm optimization
D) Data encryption
- 8. What is a term frequency-inverse document frequency (TF-IDF) in information retrieval?
A) An encryption key
B) A data compression technique.
C) A data storage method.
D) A statistical measure to evaluate the importance of a term in a document.
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