DDN Metrics
This page provides a complete list of skill categories available in the DDN API and their definitions. These categories classify skills as Defining, Distinguishing, or Necessary based on how they relate to a given occupation.
Note: Skill classifications are determined by Lightcast’s proprietary DDN model using recall and concentration metrics from job postings.
Categories
| Category | Definition |
|---|---|
Defining Skills | Represents the day-to-day tasks and responsibilities of the job. An employee needs these skills to qualify for and perform successfully in this occupation. |
Distinguishing Skills | Advanced skills that are called for occasionally. An employee with these skills is likely more specialized and able to differentiate themselves from others in the same role. |
Necessary Skills | Specialized skills required for that job and relevant across other similar jobs. An employee needs these skills as building blocks to perform the more complex Defining Skills. |