Machine Learning S8 Slot Quiz

Supervised learning and unsupervised clustering both require which is correct according to the statement.

• Input attribute

• hidden attribute

•   output attribute

•     categorical attribute

Following are the types of supervised learning

• regression

• classification

• subgroup discovery

• All of above

Which of the following techniques would perform better for reducing dimensions of a data set?

• removing columns which have high variance in data

• removing columns which have too many missing value

• removing columns with dissimilar data trends

• None of the above

The problem of finding hidden structure in unlabeled data is called

• unsupervised learning

• reinforcement learning

• supervised learning

• None

Of the Following Examples, Which would you address using an supervised learning Algorithm?

• given a set of news articles found on the web, group them into set of articles about the same story

• given email labeled as spam or not spam, learn a spam filter

• given a database of customer data, automatically discover market segments and group customers into different market segments

• find the patterns in market basket analysis

In multiclass classification number of classes must be

• equals to two

• less than two

• greater than two

• None

Impact of high variance on the training set ?

• underfitting

• overfitting

• both underfitting & overfitting

• depends upon the dataset

What can be major issue in Leave-One-Out-Cross-Validation(LOOCV)?

• high variance

• low variance

• faster runtime compared to k-fold cross validation

• slower runtime compared to normal validation

Imagine a Newly-Born starts to learn walking. It will try to find a suitable policy to learn walking after repeated falling and getting up. Specify what type of machine learning is best suited?

• regression

• means algorithm

• reinforcement learning

• None

In what type of learning labelled training data is used

• unsupervised learning

• supervised learning

• reinforcement learning

• active learning