Question $1$

$($a$)$ It is required to analyze the sentiments about the services of an airline from the customers'

comments. Specify the problem and formulate it as a machine$-$learning problem.

$($b$)$ What is the difference between the following learning tasks?

i$.$ Classification

ii$.$ Regression

iii. Clustering

$($c$)$ What is inductive learning? Illustrate it with the help of an example.

$($d$)$ Interpret the following notations:

i$.,y_{i}in\{0,1{\}}^d$

ii$.,w^{T}x$

iii. $,y=argma{x}_{t^{(z)}}{\displaystyle \underset{i=1}{\overset{k}{}}}I(t^{(z)}=t^{(i)})$

where $k$ is the number of nearest neighbors of a query instance, and ti are the labels