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