Define Data Items for Text Analytics

To enable text analytics for the word cloud visualization:
  1. Identify a data item as the unique row identifier for the exploration. You can choose a category, a measure, or a calculated item. The unique row identifier must have a unique value for each row of the data source.
    Right-click the data item in the Data pane, and then select Set as Unique Row Identifier.
    Note: Depending on the number of rows in your data, it might be possible to select an item whose values are not unique. A nonunique identifier can produce unreliable results.
  2. Assign one or more categories to the Document Collection data role. Right-click a category, and then select Document Collection.
    Note: A document collection can be used in your visualizations the same way as a category.