Chapter 1

Documents and queries are represented by a set of index terms. We say that the model is set-theoretic

• Boolean Model

• Vector Model

• Probabilistic Model

• T- Model

In the language of the World Wide Web, retrieval and browsing are called as __

• accessing actions.

• modifying actions

• pulling actions.

• pushing actions

The task whose main objectives are not clearly defined in the beginning and whose purpose might change during the interaction

• retrieval

• serching

• browsing

• sorting

Which operations transform the original documents and generate a logical view of them?

• The text operations

• The query operations

• Indexing operations

• Searching Operations

Major drawback suffered by Boolean model is due to the fact …..

• Model based on set theort and boolean algebra

• Queries are specified as boolean expresion

• Retrieval strategy is based on binary decision criteria

• Model predict that each document is either relevant or non-relevant

Which of the following is not a classical model of information retrieval?

• Boolean

• Cluster

• Probabilistic

• Vector space

Precision defines the ------ of documents in the evaluation of the information retrieval system

• Quantity

• Quality

Users navigate through documents in a through pages. manner, like scrolling

• Flat Browsing

• Structure browsing

• Hypertext Browsing

In a system designed for providing ----------- the response time and the space required are usually the metrics of most interest and the ones normally adopted for evaluating the system.

• Data Retrieval

• Information retrieval

which model enables the creation of hierarchical indexing structures over the same document text?

• Model based on non overlapping list

• Model-based Proximal Nodes