Recent questions in Data Mining and Warehousing

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason RAssertion A: OLAP systems are optimized for complex queries and analys...

Consider that the visualization of a $3$-dimensional data cube is showing Sales Quantity for each combination of the attributes Product Type, Month and Country.From this,...

Consider the concept hierarchies as shown in the figure.Which of the following options denotes the total number of possible data cuboids from these concept hierarchies? $...

\[\begin{array}{ccc}\textbf{Time Hierarchy} & \textbf{Location Hierarchy} & \textbf{Product Hierarchy} \\\text{Year} & \text{Country} & \text{Item Category} \\\downarrow ...

A $3$-dimensional data cube shows sales quantity for each combination of product type, month and country.Now we want to visualize sales quantity for each combination of p...

Considering the following statements:Data transformation is involved in Datamining process.Online database is used in Data warehouse.Classification is a measure of accura...

Which of the following table contains the primary information in the data warehouse?Dimension tableFact tableLookup tablePrimary table

Which of the following refers to a method of sampling in which a core group of participants who are initially sampled for a research study recruit or recommend other pote...

 @sachinmittal sir told his lecture introduction to data warehouse , you can skip entirely it okay ,no question asked in previous and model question paper also is it true...

Consider a fact table in an OLAP application: $\text{Facts (D1, D2, val)},$ where $\text{D1}$ and $\text{D2}$ are its dimension attributes and $\text{val}$ is a dependent...

Consider the following statements:S1: Binning reduces dimensionality by aggregating data points into fewer categories.S2: OLTP focuses on complex queries and aggregations...

Consider a Big Bazar scenario where the product set is P = {Rice, Pulse, Oil, Milk, Apple}. The database comprises six transactions where 1 represents the presence of the...

With reference to cluster analysis in data mining, a distance measure that is NOT used is :Euclidean distance.Manhattan distance.Chebychev's distance.Lee distance.

Identify the incorrect statement :The overall strategy drives the e-commerce data warehousing strategy.Data warehousing in an e-commerce environment should be done in a c...

In a database, a rule is defined as $(\mathrm{P} 1$ and $\mathrm{P} 2)$ or $\mathrm{P} 3$ ? $\mathrm{R} 1(0.8)$ and $\mathrm{R} 2(0.3)$, where $\mathrm{P} 1$, $\mathrm{P}...

The process of removing details from a given state representation is called _____ExtractionMiningSelectionAbstraction

Given below are two statements:If two variables $V_1$ and $V_2$ are used for clustering, then consider the following statements for $k$ means clustering with $k=3$:Statem...

With reference to implementation of different association mining algorithms, identify the correct statement :The FP growth method was usually better than the best impleme...

Dimensional modeling in Data Mining refers to:view and interrogate datadefine structures and store dataretrieve information only none of these