DM week 1

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  • Created by: mariolarc
  • Created on: 06-05-21 08:35

1. Which of the following statements about data mining as a process is false?

  • Deciding which model to use depends on the type of the available data.
  • Overfitting implies the constructed model is very good.
  • Creating data sets from raw data in order to apply data mining methods can be a very time-consuming task in practice.
  • Selecting the right attributes in the data set affects the performance of the constructed model.
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Other questions in this quiz

2. Which of the following data mining tasks aims to divide the instances into groups, so that instances in the same group are more similar than instances in different groups?

  • Association.
  • Regression.
  • Clustering.
  • Classification.

3. Which of the following statements about Data Mining is false?

  • Can be used for making predictions.
  • Extracts meaningful and useful patterns from data.
  • Requires generating new data.
  • Can be automated.

4. Which of the following knowledge representations do not require the computation of an actual model?

  • Clusters.
  • Decision trees.
  • Instance-based.
  • Classification rules.

5. Which of the following statements about tabular data sets, i.e. ones represented in the form of a two-dimensional table, is false?

  • Rows correspond to instances.
  • Columns correspond to attributes.
  • Attributes are typically assumed to be independent.
  • Instances are typically assumed to be independent.

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