Information Retrieval and Search

Information Retrieval

Information Retrieval (IR) is the activity of obtaining resources from an information system that are relevant to the required information from a collection.

Types of Search

Searches can be indexed based on:

• Full-Text Search
  Searching within the entire text of documents

• Content-Based Search
  Searching based on features and content of documents

Scope and Applications

Information retrieval is the science of searching for information in:

• Searching within a single document
• Searching for the documents themselves
• Searching for metadata that describes the data
• Searching in text, image, or audio databases