MISM5404  MDA5404  DATA ANALYTICS AND KNOWLEDGE ENGINEERING KCA Past Paper

UNIVERSITY EXAMINATIONS: 2017/2018
EXAMINATION FOR THE DEGREES OF MASTERS OF SCIENCE IN
DATA ANALYTICS/ INFORMATION SYSTEMS MANAGEMENT
MISM 5404/ MDA 5404: DATA ANALYTICS AND KNOWLEDGE
ENGINEERING
ORDINARY EXAMINATIONS
DATE: APRIL, 2018 TIME: 2 HOURS
INSTRUCTIONS: Answer Question One & ANY OTHER TWO questions.

QUESTION ONE
(a) Briefly describe the meaning of the term ‘descriptive analytics’ and their limitations
(2 Marks)
(b) State and explain using example the following data analytic measures.
(i) Measures of central tendency (2 Marks)
(ii) Measures of dispersion (2 Marks)
(iii) Measures of associations (2 Marks)
(c) Briefly discuss the interplay between the terms ‘Data analytics’ and ‘Knowledge engineering’
(2 Marks)
(d) Consider the following students’ performance data set

Use the above data set to compute measures for both assignment Marks and cat Marks. Interpret
results for each case
(ii) Standard deviation (2 Marks)
(iii) Covariance (2 Marks)
(iv) Correlation (2 Marks)
(d) Big data is increasingly important in modern organizations. Discuss any four uses of big data in
modern organizations
(4 Marks)
QUESTION TWO
(a) Explain the objective of diagnostics analytics and at least one potential application in the industry
(2 Marks)
(b) Describe the meaning of the term ‘factor analysis’ and at least one of its applications in business
enterprises
(2 Marks)
(c) Explain the procedure for principle component analysis and its importance in data analytics
(4 Marks)
(d) Convert the above transactional data set to sequential data set

Briefly explain predictive analytics cycle. Use a diagram to illustrate your answer. (5 Marks)
QUESTION THREE
(a) State and explain five knowledge engineering activities (5 Marks)
(c) Discuss four components of a knowledge based system (4 Marks)
(d) Construct Semantic Network of the following scenario (3 Marks)
cats, bears and whales are mammals. Bears and cats have fur while whales and fish lives in
water. Both mammals and fish are animal.
(c) Consider the following knowledgebase of facts
furniture (sink, kitchen,1).
furniture (chair,lounge,4).
furniture (bed,bedroom,1).
furniture (cooker,kitchen,1).
furniture (chair,kitchen,4).
furniture (sofa,lounge,1).
(i) Write a query that can be used to find the number of each item there are in the lounge
(1 Mark)
(ii) Write a query that can be used to list all the rooms without showing the furniture or the
numbers (1 Mark)
(iii)Write a query that can be used to find the number of chairs in each room (1 Mark)
QUESTION FOUR
(a) Describe the difference between Forward chain and backward chain reasoning as used in
knowledge engineering (3 Marks)
(b) Consider the following rules for navigating a university building:
If on first floor and button is pressed on first floor then open door
If on first floor and button is pressed on second floor then go to second floor
If on first floor and button is pressed on third floor then go to third floor
If on second floor and button is pressed on first floor and already going to third floor then
remember to go to first floor later.
Suppose a student is in first floor and button is pressed on third floor. Use forward chain to
determine whether the student should go to third floor.
(2 Marks)
(c) Briefly explain with practical examples any three applications of sequence mining in data
analytics and knowledge engineering (3 Marks)
(d) Consider the following transaction data set

) Convert the above transaction database into a sequence database (2 Marks)
(ii) Given that support count=2 use GSP algorithm to find 3-item sequence (3 Marks)
(d) Determined whether the following subsequence are contained in the corresponding sequences

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