Data Analysis: Classification and Prediction
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Questions and Answers

What is the difference between classification and prediction in data analysis?

Classification predicts categorical labels, while prediction models continuous valued functions.

Provide an example of a classification model.

Categorizing bankloan applications as safe or risky.

What kind of model is used for predicting the expenditures of potential customers on computer equipment?

Prediction model

What is regression analysis commonly used for?

<p>Numeric prediction</p> Signup and view all the answers

Describe the two steps involved in the data classification process.

<p>Learning step and classification step</p> Signup and view all the answers

What is the purpose of the learning step in classification?

<p>To build a classifier by analyzing a training set of database tuples and their associated class labels.</p> Signup and view all the answers

Explain the significance of the class label attribute in the learning step.

<p>The class label attribute determines the predefined class to which each tuple belongs. It is categorical, discrete-valued, and unordered.</p> Signup and view all the answers

Why is it important to use a test set for estimating the predictive accuracy of the classifier?

<p>Using a test set helps to provide a more realistic estimate of the classifier's accuracy, as it is independent of the training tuples and can detect overfitting.</p> Signup and view all the answers

What is the purpose of data cleaning in the context of classification or prediction?

<p>Data cleaning aims to remove or reduce noise, treat missing values, and improve the accuracy, efficiency, and scalability of the classification or prediction process.</p> Signup and view all the answers

How are training tuples referred to in the context of classification?

<p>Training tuples can be referred to as samples, examples, instances, data points, or objects.</p> Signup and view all the answers

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