NeuroData Training Quiz 2

A visually engaging infographic that highlights key concepts in machine learning, including random forests, decision trees, confusion matrices, and evaluation metrics.

NeuroData Training Quiz 2

Test your knowledge on machine learning concepts with our engaging NeuroData Training Quiz 2! This quiz features a variety of questions that cover essential topics in data science and machine learning.

Whether you're a student, a professional, or just someone interested in the field, this quiz is for you. Challenge yourself and check how well you understand the intricacies of data handling!

10 Questions2 MinutesCreated by CodingTree247

Which of the following hyper parameter(s), when increased may cause random forest to over fit the data? Number of Trees Depth of Tree Learning Rate

Below are the 8 actual values of target variable in the train file. [0,0,0,1,1,1,1,1] What is the entropy of the target variable?

-(5/8 log(5/8) + 3/8 log(3/8))

5/8 log(5/8) + 3/8 log(3/8)

3/8 log(5/8) + 5/8 log(3/8)

5/8 log(3/8) – 3/8 log(5/8)

Let’s say, you are working with categorical feature(s) and you have not looked at the distribution of the categorical variable in the test data. You want to apply one hot encoding (OHE) on the categorical feature(s). What challenges you may face if you have applied OHE on a categorical variable of train dataset?

All categories of categorical variable are not present in the test dataset.

Frequency distribution of categories is different in train as compared to the test dataset.

Train and Test always have same distribution.

Both A and B

None of these

Which of the following options is/are true for K-fold cross-validation? 1- Increase in K will result in higher time required to cross validate the result. 2- Higher values of K will result in higher confidence on the cross-validation result as compared to lower value of K. 3- If K=N, then it is called Leave one out cross validation, where N is the number of observations.

1 and 2

2 and 3

1 and 3

Imagine you are working on a project which is a binary classification problem. You trained a model on training dataset and get the below confusion matrix on validation dataset.Based on the above confusion matrix, choose which option(s) below will give you correct predictions? 1- Accuracy is ~0.91 2- Misclassification rate is ~ 0.91 3- False positive rate is ~0.95 4- True positive rate is ~0.95

1 and 3

2 and 4

1 and 4

2 and 3

For which of the following hyperparameters, higher value is better for decision tree algorithm? 1- Number of samples used for split 2- Depth of tree 3- Samples for leaf

Imagine, you are working with “NeuroData” and you want to develop a machine learning algorithm which predicts the number of views on the articles. Your analysis is based on features like author name, number of articles written by the same author on NeuroData in past and a few other features. Which of the following evaluation metric would you choose in that case?1- Mean Square 2- Error Accuracy 3- F1 Score

Adding a non-important feature to a linear regression model may result in. 1- Increase in R-square 2- Decrease in R-square

Only 1 is correct

Only 2 is correct

Either 1 or 2

None of these

NeuroData Training Quiz 2

NeuroData Training Quiz 2

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