Type node

You can specify field properties in a Type node.

The following main properties are available.

  • Field. Specify value and field labels for data in Watson Studio. For example, field metadata imported from a data asset can be viewed or modified here. Similarly, you can create new labels for fields and their values.
  • Measure. This is the measurement level, used to describe characteristics of the data in a given field. If all the details of a field are known, it's called fully instantiated.
    Note: The measurement level of a field is different from its storage type, which indicates whether the data is stored as strings, integers, real numbers, dates, times, timestamps, or lists.
  • Role. Used to tell modeling nodes whether fields will be Input (predictor fields) or Target (predicted fields) for a machine-learning process. Both and None are also available roles, along with Partition, which indicates a field used to partition records into separate samples for training, testing, and validation. The value Split specifies that separate models will be built for each possible value of the field.
  • Value mode. Use this column to specify options for reading data values from the dataset, or use the Specify option to specify measurement levels and values.
  • Values. With this column, you can specify options for reading data values from the data set, or specify measurement levels and values separately. You can also choose to pass fields without reading their values. You can't amend the cell in this column if the corresponding Field entry contains a list.
  • Check. With this column, you can set options to ensure that field values conform to the specified values or ranges. You can't amend the cell in this column if the corresponding Field entry contains a list.

Click the Edit (gear) icon next to each row to open additional options.

Tip: Icons in the Type node properties quickly indicate the data type of each field, such as string, date, double integer, or hashtag.
Figure 1. New Type node icons
New Type node icons