The WEKA Environment
Explore the Data

Explore the Data

Now it's time to put on your exploratory hat as you start examining and probing the available data.

Practice Goals:

The first step in exploratory data analysis typically involves loading the dataset and understanding its key characteristics. Basic visualizations such as bar graphs for categorical data, and histograms for numerical data, can show how data values are distributed.  In other words, they expose the shape of the data.  You may also want to exclude specific data attributes (features) or edit the data by adding new records or modifying existing instances.

Hands-On Activities:

  • Download the Iris Dataset
    Download Iris dataset (CSV)

  • Launch the WEKA Explorer
  • Load the Data:   Click [Open file...]
  • View or Modify Data:  Click [Edit]
  • Discover the Shape of the Data: [Visualize All]

How-To Guides:

Using the Preprocess Tab to Summarize and Visualize the Data


Using the Preprocess Tab to View or Modify the Data


Using the Visualize Tab to Explore Deeper Relationships in the Data