Firms that are engaged in sentiment mining are analyzing data collected from?
experiments.
social media sites.
focus groups.
in-depth interviews.
Q.6.
Suppose one wants to predict the number of newborns according to the size of storks' population by performing supervised learning. The following given statement can be considered as an example of?
Structural equation modeling
Clustering
Regression
Classification
Q.7.
All of the following are types of Data Sets EXCEPT:
Graph
Ordered
Record
Numerical
Q.8.
Which of the following applied on warehouse?
write only
read only
both a & b
none of these
Q.9.
The issues like efficiency, scalability of data mining algorithms comes under ________
Performance issues
Diverse data type issues
Mining methodology and user interaction
All of the above
Q.10.
23.) Data matrix is often called a one-mode matrix.
True
False
Q.11.
Discriminating between spam and correct email is a
Clustering
Segmentatiin
Classification
Regression
Q.12.
__________ may be defined as the data objects that do not comply with the general behavior or model of the data available.
Outlier Analysis
Evolution Analysis
Prediction
Classification
Q.13.
____ refers to the mapping or classification of a class with some predefined group or class.
Data Discrimination
Data Characterization
Data Definition
Data Visualization
Q.14.
Which of the following correctly defines the term "Discovery"?
It is hidden within a database and can only be recovered if one is given certain clues (an example IS encrypted information).
An extremely complex molecule that occurs in human chromosomes and that carries genetic information in the form of genes.
It is a kind of process of executing implicit, previously unknown and potentially useful information from data
None of the above
Q.15.
What is the use of data cleaning?
to remove the noisy data
correct the inconsistencies in data
transformations to correct the wrong data.
All of the above
Q.16.
In certain cases, it is not clear what kind of pattern need to find, data mining should_____:
Try to perform all possible tasks
Perform both predictive and descriptive task
It may allow interaction with the user so that he can guide the mining process
All of the above
Q.17.
Which of the following statement is true about classification?
It is a measure of accuracy
It is a subdivision of a set
It is the task of assigning a classification
None of the above
Q.18.
Which of the following is not involving data mining
Knowledge discovery
Data archaeology
Data exploration
Data transformation
Q.19.
____________ is the main technique employed for data selection.
Change of scale
Preprocessing
Sampling
Discretization
Q.20.
Metadata describes __________.
contents of database
structure of contents of database
structure of database.
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