4. Two different machine learning techniques are applied to a numeric data set and the two models built are Model 1 and Model 2. The classification test errors as paired sequences, using a 10-fold cross validation over 10 trials, are recorded as follows: Model 1: Model 2: 0.1 0.7 0.4 0.1 0.7 0.3 0.2 0.5 0.1 (a) Which model is better if we apply "voting" (if any)? (b) Which model is better than the other, if we compare the differences of their average errors, error (model 1)-error(model2), by using the paired Student's t-test with 9 degrees of freedom at the 10% level (i.e., 80% confidence level)? Compute and show work. 0.9 0.7 0.5 0.3 0.5 0.4 0.3 0.8 0.2 0.1 0.2

4. Two different machine learning techniques are applied to a numeric data set and the two models built are Model 1 and Model 2. The classification test errors as paired sequences, using a 10-fold cross validation over 10 trials, are recorded as follows: Model 1: Model 2: 0.1 0.7 0.4 0.1 0.7 0.3 0.2 0.5 0.1 (a) Which model is better if we apply "voting" (if any)? (b) Which model is better than the other, if we compare the differences of their average errors, error (model 1)-error(model2), by using the paired Student's t-test with 9 degrees of freedom at the 10% level (i.e., 80% confidence level)? Compute and show work. 0.9 0.7 0.5 0.3 0.5 0.4 0.3 0.8 0.2 0.1 0.2

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

4. Two different machine learning techniques are applied to a numeric data set and the two models built
are Model 1 and Model 2. The classification test errors as paired sequences, using a 10-fold cross
validation over 10 trials, are recorded as follows:
Model 1:
Model 2:
0.7 0.3
0.5 0.1
(a) Which model is better if we apply "voting" (if any)?
(b) Which model is better than the other, if we compare the differences of their average errors, error
(model 1)-error(model2), by using the paired Student's t-test with 9 degrees of freedom at the 10% level
(i.e., 80% confidence level)? Compute and show work.
0.9
0.1
0.7 0.4
0.1 0.7 0.3
0.2
0.5
0.5
0.4
0.8 0.2 0.1
0.3
0.2

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