COSC-E4 CS Elective 4 (Machine Learning) - Lesson 1: Introduction to Machine Learning

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Questions and Answers

What is the main goal of model evaluation in machine learning?

  • To clean the data
  • To collect data from various sources
  • To assess the efficacy of a model (correct)
  • To visualize data relationships

Which step involves wrangling data and preparing it for training in the machine learning process?

  • Train the Model
  • Data Preparation (correct)
  • Choose a Model
  • Data Collection

Why is it important to randomize data during the data preparation phase?

  • To handle missing normalization
  • To remove the effects of the order of data collection (correct)
  • To visualize data relationships
  • To detect relevant relationships between variables

What is the primary goal of training a machine learning model?

<p>To answer questions or make predictions accurately (A)</p> Signup and view all the answers

Which step involves selecting algorithms based on specific tasks in machine learning?

<p>Choose a Model (B)</p> Signup and view all the answers

What role does the quantity and quality of data play in model accuracy?

<p>Directly dictates how accurate the model is (C)</p> Signup and view all the answers

What is a key component of Machine Learning models?

<p>Predictions (D)</p> Signup and view all the answers

What is a feature in the context of Machine Learning?

<p>A characteristic or attribute used as an input to a model (D)</p> Signup and view all the answers

What is a feature vector in Machine Learning?

<p>A vector containing the values of all features for a single instance (B)</p> Signup and view all the answers

What is the purpose of training in Machine Learning?

<p>To optimize the model's parameters for better predictions (A)</p> Signup and view all the answers

Which of the following is NOT a common step in the Machine Learning process?

<p>Hardware configuration (B)</p> Signup and view all the answers

What is the primary goal of Machine Learning?

<p>To automate the process of learning from data (B)</p> Signup and view all the answers

What is the purpose of the 'Evaluate the Model' step in the Machine Learning process?

<p>To assess the model's performance on previously unseen data (B)</p> Signup and view all the answers

In the linear regression example, what does the variable 'm' (or 'W') represent?

<p>The slope or weight coefficient of the linear equation (D)</p> Signup and view all the answers

What is a common ratio for splitting the data into training and evaluation sets?

<p>70/30 or 80/20 (B)</p> Signup and view all the answers

What is a 'feature vector' in the context of Machine Learning?

<p>A set of input variables used to make predictions (D)</p> Signup and view all the answers

What is the purpose of the 'training step' in the Machine Learning process?

<p>To update the model's parameters based on the training data (B)</p> Signup and view all the answers

In the linear regression example, what does the variable 'b' represent?

<p>The bias term or intercept of the linear equation (B)</p> Signup and view all the answers

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