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WorksheetsData Mining
Total questions: 15
Worksheet time: 8mins
In a transactional database, EVERY transaction includes a transaction identity number.
True
False
Which of these are types of advanced databases?
Time-series databases
Text databases
Object-relational databases
All of the above
_________ stores sequences of values or events obtained over repeated measurements of time.
temporal database
sequence database
time series database
all of the above
Text database can be ___________
A. unstructured
B. semi-structured
C. well-structured
Both A and B
A, B, C
Cluster analysis is ...................
Unsupervised Learning
Supervised learning
Semi supervised learning
None of these
Of the following what are the distance based clustering algorithms?
K-Means
K-Medoids
Hierarchical
DBSCAN
K-Means clustering is ........................ type clustering algorithm?
Distance based
Partition based
Density based
Hierarchical
Weblog data is __________________
Time series data
Sequence data
Streaming data
Categorical data
Which of the following statements are true?
Time series data can be sequence data but sequence data need not be Time series data
A Good clustering method will have high intra-class similarity and low inter-class similarity
Similarity measure is critical for cluster analysis
Biological sequence is a Time series data
Choice of a split in a decision tree is based on this algorithm
Greedy
Divide and Conquer
Dynamic Programming
CART are also known as these trees
Decision
Binary
Binary Search
The terminal nodes of a tree are also known as these types of nodes
root
leaf
Median
This coefficient can measure the purity of a node in a classification tree
Z Score
Gini
K- index
The process of cutting a decision tree is called as tree____
pruning
Growing
Traversal
______ is an estimate of the conditional probability that one item (for example, {A} is in the basket given that another {B} is already present.
support
Confidence
Data discriminization
