A Machine Learning Specialist Is Building a Prediction Model for a Large

question 45

Multiple Choice

A Machine Learning Specialist is building a prediction model for a large number of features using linear models, such as linear regression and logistic regression. During exploratory data analysis, the Specialist observes that many features are highly correlated with each other. This may make the model unstable. What should be done to reduce the impact of having such a large number of features?

• A) Perform one-hot encoding on highly correlated features.
• B) Use matrix multiplication on highly correlated features.
• C) Create a new feature space using principal component analysis (PCA)
• D) Apply the Pearson correlation coefficient.

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Definitions:

CPI

The Consumer Price Index, through a weighted average method, evaluates how the prices of a varied mix of consumer services and goods, such as medical care, food, and transportation, change over time.

Salary

Predetermined, regular payment made by an employer to an employee, often expressed as an annual sum.

Consumer Price Index

A metric that quantifies the average shift over time in the costs that urban residents incur for a specified set of consumer goods and services.

CPI

Consumer Price Index; a measure that examines the weighted average of prices of a basket of consumer goods and services, such as transportation, food, and medical care.