Data Mining Unit 1

Which of the following is an essential process in which the intelligent methods are applied to extract data patterns?

• 1. Warehousing

• 2. Data Mining

• 2. Text Mining

• 1. Data Selection

Which is not included in the most basic forms of data for mining

applications?

• database data

• data warehouse data

• data-mart data

• transactional data

A relational database is a collection of _____?

• tuples

• data

• tables

• attributes

What are the functions of Data Mining?

• 1. Association and correctional analysis classification

• 1. Prediction and characterization

• 2. Cluster analysis and Evolution analysis

• 2. All of the above

Which one of the following refers to querying the unstructured textual data?

• 1. Information retrieval

• 1. Information access

• 1. Information update

• 1. Information manipulation

Which one is a classification algorithm?

• Linear regression

• Polynomial regression

• Logistic regression

• None

What does recall refer to in classification?

• The proportion of all the relevant data points

• The proportion of only the correct data points

• The proportion of all data points

• None

Suppose your classification model predicted true for a class which actual value was false. Then this is a-

• False negative

• False positive

• True positive

• True negative

Which is conclusively produced by Hierarchical Clustering?

• final estimation of cluster centroids

• tree showing how nearby things are to each other

• assignment of each point to clusters

• all of these

Which clustering technique requires a merging approach?

• Hierarchical

• Partitional

• Naive Bayes

• None of the mentioned