Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 8th Semester (Eight Semester) 2017-18 NCS 080 Pattern Recognition Question Paper
Printed Paesz02 Sub Code: NCS-080
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B TECH
(SEM. VIII) THEORY EXAMINATION 2017-18
PATTERN RECOGNITION
T ime: 3 Hours T 0tal Marks: 100
Attempt all Sections. If require any missing data; then choose suitably.
SECTION A
1. Attempt all questions in brief. 2 x 10 = 20
Define the law of total probability.
What do you mean by dimension reduction in pattern recognition?
Write the difference between supervised learning and unsupervised learning.
How do we evaluate the performance of a classifier?
What is Hidden Markov Model (HMM)?
What is discriminant function?
Write short notes on Gaussian mixture model.
Discuss cluster validation.
Write K?means clustering algorithm.
Write the difference between clustering and classification.
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SECTION B
2. Attempt any three of the following: 10 x 3 = 30
a. What do you mean by learning and adaptation? Explain the components of a
learning system.
b. Explain the Chi-Square test and discuss their significance in pattern recognition
with suitable example.
0. Explain the concept of expectation maximization with the help of an algorithm.
(1. How K?nearest neighbor (KNN) method works? Explain with KNN estimation
and KNN rule.
e. Explain Naive Bayes Classifier.
SECTION C
3. Attempt any one part of the following: 10 x 1 = 10
(a) Consider a two?class problem where the classes are labeled pen drive and
laptop. Suggest a set of features that could be used to discriminate between
these two classes of objects.
(b) What is Baysian Decision Theory? Discuss two-class category Classification in
details.
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Attempt any one part of the following: 10 x 1 = 10
(a) Illustrate statistical and syntactic pattern recognition (SPR) approach.
(b) Explain normal density function and discuss its significance in pattern
recognition?
Attempt any one part of the following: 10 x 1 = 10
(a) Write short notes on following-
1. Maximum likelihood estimation
ii. Bayesian Estimation
(b) What is Parzon window? Explain. Derive the conditions for (i) convergence
of mean (ii) convergence of variance.
Attempt any one part of the following: 10 x 1 = 10
(a) What do you mean by Fuzzy Decision making? Also discuss the Fuzzy
Classification using suitable example.
(b) Name the different methods of non?parameter estimation strategies. What are
the main differences between them?
Attempt any one part of the following: 10 x 1 = 10
(a) What are different clustering techniques? Why is clustering important? What is
an agglomerative clustering algorithm? Explain.
(b) Write short notes on following-
i. Cluster validation
ii. Criteria function for clustering
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This post was last modified on 30 January 2020