Exercise 2 An engineer analyses the presence (Yes-present, No- not present) of a specific terms in received messages (100 messages), to filter spams. These terms are: Donation, Ransom, Shows, Unsubscribe The analysis is based on the data shown below: Donation Ransom Shows Unsubscribe Yes No Yes No Yes No Yes No Total Spam 10/20 8/20 57/80 65/100 4/20 16/20 20 0/20 8/80 8/100 10/20 20/20 12/20 71/80 91/100 23/80 1/80 5/100 14/80 24/100 Ham 79/80 95/100 66/80 80 Total 76/100 35/100 100 Suppose that you receive a new message that contains the terms Donation and Unsubscribe, but does not contain either Ransom or Shows. In your opinion, this new message will be classified as spam or ham? (assume class conditional independence: P(An B/C) = P(A/C)P(B/C) and use conditional probability)
Exercise 2 An engineer analyses the presence (Yes-present, No- not present) of a specific terms in received messages (100 messages), to filter spams. These terms are: Donation, Ransom, Shows, Unsubscribe The analysis is based on the data shown below: Donation Ransom Shows Unsubscribe Yes No Yes No Yes No Yes No Total Spam 10/20 8/20 57/80 65/100 4/20 16/20 20 0/20 8/80 8/100 10/20 20/20 12/20 71/80 91/100 23/80 1/80 5/100 14/80 24/100 Ham 79/80 95/100 66/80 80 Total 76/100 35/100 100 Suppose that you receive a new message that contains the terms Donation and Unsubscribe, but does not contain either Ransom or Shows. In your opinion, this new message will be classified as spam or ham? (assume class conditional independence: P(An B/C) = P(A/C)P(B/C) and use conditional probability)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Exercise 2
An engineer analyses the presence (Yes-present, No- not present) of a specific terms in received messages (100
messages), to filter spams. These terms are:
Donation, Ransom, Shows, Unsubscribe
The analysis is based on the data shown below:
Donation
Ransom
Shows
Unsubscribe
No
Yes
No
Total
No
10/20
Yes
No
Yes
Yes
8/20
57/80
65/Л00
20/20
12/20
20
0/20
8/80
8/100
4/20
16/20
10/20
Spam
Ham
80
71/80
91/100
23/80
35/100
79/80
14/80
66/80
1/80
5/100
100
Total
95/100
24/100
76/100
Suppose that you receive a new message that contains the terms Donation and Unsubscribe, but does not
contain either Ransom or Shows.
your opinion, this new message will be classified as spam or ham? (assume class conditional independence:
P(An B/C) = P(A/C)P(B/C) and use conditional probability)
In
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