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