Exploring your data

Once you have defined a dataset, the first thing that DSS allows you to do is to view your data in the “Explore” component.

Explore shows you a sample of your dataset. It also provides:

• Quick descriptive statistics, either on the sample on the entirety of the data

• Meanings, i.e. rich types. See Schemas, storage types and meanings for more information

• An overview of all columns

• The ability to sort and filter the sample

• The ability to choose which columns are displayed

All these abilities are also available while doing visual preparation of your data.

Note

For a step by step introduction to the exploration component of Data Science Studio, we recommend that you follow our Basic Courses. This section will focus on advanced and reference topics related to the exploration component.

• Sampling
  • Sampling in Explore
  • Sampling methods
    • First records
    • Random sampling (fixed number of records)
    • Random sampling (approximate ratio)
    • Column values subset
    • Stratified (fixed number of records)
    • Stratified (approximate ratio)
    • Class rebalancing (approximate number of records)
    • Class rebalancing (approximate ratio)
    • Last records
  • Sampling and partitioning
  • Refreshing the sample
• Analyze