What are the two types of online retrieval of information?

Question

State-of-the-art approaches to retrieving information employ two generic techniques: (1) matching words in the query against the database index (key-word searching) and (2) traversing the database with the aid of hypertext or hypermedia links.

What are the two types of information retrieval?

Precision and recall are the two parameters of retrieval effectiveness. Precision refers to how many of the retrieved documents are relevant to the user, whereas recall refers to what fraction of relevant documents in the collection are retrieved.

What is online information retrieval?

Online Information retrieval is the activity of obtaining information resources relevant to an information need from a collection of information resources via the help of computer or other related technology.

How many types of information retrieval are there?

There are three types of Information Retrieval (IR) models: 1. Classical IR Model — It is designed upon basic mathematical concepts and is the most widely-used of IR models. Classic Information Retrieval models can be implemented with ease.

Which of the following are types of information retrieval?

Methods/Techniques in which information retrieval techniques are employed include:Adversarial information retrieval.Automatic summarization. Multi-document summarization.Compound term processing.Cross-lingual retrieval.Document classification.Spam filtering.Question answering.Information retrieval - Wikipedia

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