Information Retrieval unit 1

What is the primary goal of Information Retrieval?

• To store data efficiently

• To retrieve relevant information from a collection of documents

• To process numerical data

• To generate new data

Which of the following is considered a major challenge in Information Retrieval?

• Storing large amounts of data

• Retrieving irrelevant information

• Efficient data backup

• Network security

Which model represents documents and queries as vectors in a high-dimensional space?

• Probabilistic Model

• Boolean Retrieval

• Vector Model

• Latent Semantic Indexing Model

In Boolean retrieval, what logical operator is used to find documents containing all specified terms?

• OR

• NOT

• AND

• XOR

What distinguishes Information Retrieval from Data Retrieval?

• IR deals with structured data, DR with unstructured data.

• IR deals with exact matches, DR with relevance.

• IR deals with relevance, DR with exact matches.

• IR is faster than DR.

Which of these is a component of an IR model?

• Data compression

• Query processing

• Network protocols

• User interface design

Which model uses probability theory to rank documents based on their likelihood of being relevant to a query?

• Vector Model

• Probabilistic Model

• Boolean Retrieval

• Latent Semantic Indexing Model

What does LSI stand for in the context of IR models?

• Logical Search Interface

• Latent Semantic Indexing

• Linear Statistical Integration

• Large Scale Information

Text categorization is also known as:

• Text summarization

• Document classification

• Text generation

• Text encryption

Which of these is NOT a typical feature of an IR system?

• Scalability

• Data entry automation

• Efficiency

• Effectiveness