# Recent questions and answers in Data Mining and Warehousing

1
The process of removing details from a given state representation is called _____ Extraction Mining Selection Abstraction
2
A data warehouse is always _________. Subject oriented Object oriented Program oriented Compiler oriented
3
Which of the following is a knowledge representation technique used to represent knowledge about stereotype situation? Semantic network Frames Scripts Conceptual Dependency
4
5
Match the following : ... iv, b-ii, c-i, d-iii a-iv, b-iii, c-ii, d-i a-ii, b-iii, c-iv, d-i a-i, b-iii, c-iv, d-ii
1 vote
6
Consider a fuzzy set old as defined below Old =$\left\{(20, 0.1), (30, 0.2), (40, 0.4), (50, 0.6), (60, 0.8), (70, 1), (80, 1)\right\}$. Then the alpha-cut for alpha = $0.4$ for the set old will be $\left\{(40, 0.4)\right\}$ $\left\{50, 60, 70, 80\right\}$ $\left\{(20, 0.1), (30, 0.2)\right\}$ $\left\{(20, 0), (30, 0), (40, 1), (50, 1), (60, 1), (70, 1), (80, 1)\right\}$
7
Consider the results of a medical experiment that aims to predict whether someone is going to develop myopia based on some physical measurements and heredity. In this case, the input dataset consists of the person's medical characteristics and the target variable is ... develop myopia and $0$ for those who aren't. This can be best classified as Regression Decision Tree Clustering Association Rules
8
1 vote
9
A data cube $C,$ has $n$ dimensions, and each dimensions has exactly $p$ distinct values in the base cuboid. Assume that there are no concept hierarchies associated with the dimensions. What is the maximum number of cells possible in the data cube, $C?$ $p^n$ $p$ $(2^n-1)(p+1)$ $(p+1)^n$
1 vote
10
Criticism free idea generation is a factor of _____. Decision Support System Group Decision Support System Enterprise Resource Support System Artificial Intelligence
11
'$R$ is a robot of $M$’ means $R$ can perform some of the tasks that otherwise $M$ would do and $R$ is unable to do anything else.Which of the following is the most appropriate representation to model this situation? None of these
12
1 vote
13
Reasoning strategies used in expert systems include Forward chaining, backward chaining and problem reduction Forward chaining, backward chaining and boundary mutation Forward chaining, backward chaining and back propagation Forward chaining, problem reduction and boundary mutation
14
____ allows selection of the relevant information necessary for the data warehouse: The Top-Down View Data Warehouse View Datasource View Business Query View
1 vote
15
____ system is market oriented and is used for data analysis by knowledge workers including Managers, Executives adn Analysts. OLTP OLAP Data System Market System
16
Consider the following statements about a perception : $I$. Feature detector can be any function of the input parameters. $II$. Learning procedure only adjusts the connection weights to the output layer. Identify the correct statement out of the following : $I$ is false and $II$ is false. $I$ is true and $II$ is false. $​I$ is false and $II$ is true. $I$ is true and $II$ is true.
1 vote
17
Match the following components of an expert system : ... -i, b-iii, c-iv, d-ii a-iv, b-iii, c-i, d-ii a-i, b-iii, c-ii, d-iv a-iv, b-i, c-iii, d-ii
18
High level knowledge which relates to the use of sentences in different contexts and how the context affect the meaning of the sentences? Morphological Syntactic Semantic Pragmatic
1 vote
19
The decision tree classifier is a widely used technique for Classification Association Partition Clustering
20
If two fuzzy set $A$ and $B$ are given with membership functions $\mu_A(x) = \{0.2,0.4,0.8,0.5,0.1\}$ $\mu_B(x) = \{0.1,0.3,0.6,0.3,0.2\}$ Then the value of $\mu_{\overline{A \cap B} }$ will be $\{0.9,0.7,0.4,0.8,0.9\}$ $\{0.2,0.4,0.8,0.5,0.2\}$ $\{0.1,0.3,0.6,0.3,0.1\}$ $\{0.7,0.3,0.4,0.2,0.7\}$
21
prolog
[closed]