| Name | Description | Type | Package | Framework |
| Attribute | Abstract class for ML attributes. | Class | org.apache.spark.ml.attribute | Apache Spark |
| AttributeGroup | Attributes that describe a vector ML column. | Class | org.apache.spark.ml.attribute | Apache Spark |
| AttributeType | An enum-like type for attribute types: AttributeType$. | Class | org.apache.spark.ml.attribute | Apache Spark |
| BinaryAttribute | A binary attribute. | Class | org.apache.spark.ml.attribute | Apache Spark |
| NominalAttribute | A nominal attribute. | Class | org.apache.spark.ml.attribute | Apache Spark |
| NumericAttribute | A numeric attribute with optional summary statistics. | Class | org.apache.spark.ml.attribute | Apache Spark |
| UnresolvedAttribute | An unresolved attribute. | Class | org.apache.spark.ml.attribute | Apache Spark |