Information Retrieval unit 1

To store data efficiently

To retrieve relevant information from a collection of documents

To process numerical data

To generate new data

Storing large amounts of data

Retrieving irrelevant information

Efficient data backup

Network security

Probabilistic Model

Boolean Retrieval

Vector Model

Latent Semantic Indexing Model

OR

NOT

AND

XOR

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.

Data compression

Query processing

Network protocols

User interface design

Vector Model

Probabilistic Model

Boolean Retrieval

Latent Semantic Indexing Model

Logical Search Interface

Latent Semantic Indexing

Linear Statistical Integration

Large Scale Information

Text summarization

Document classification

Text generation

Text encryption

Scalability

Data entry automation

Efficiency

Effectiveness