# Post-Processing with the Eduction API

To perform post-processing in an application built on the Eduction API, add post-processing tasks to the Eduction engine. You can add the tasks:

- when you create the engine, if you construct the engine by supplying a configuration. When you create an Eduction engine from a configuration the configuration automatically adds any post-processing tasks in the configuration to the engine.

  See `EdkEngineCreateFromConfigFile` (C API), the `EdkEngine` constructor (Java API), or `EDKFactory::GetTextExtractionEngine` (.NET API).

- after you create the engine, by calling the appropriate function:

  - `EdkEngineAddPostProcessingTask` in the C API.
  - `addPostProcessingTask` in the Java API.

The following functions allow you to specify a minimum score that a match must have for it to return in the results after all post-processing tasks have completed:

- `EdkEngineSetPostProcessingThreshold` in the C API.
- `setPostProcessingThreshold` in the Java API.

The matches returned by the `EdkGetNextMatch` function in the C API, or by iterating over the matches in the Java API, reflect any modifications made by post-processing. If a post-processing task discards a match or its score does not meet the threshold you have specified, it is not returned at all.

If you configure a post-processing task that processes matches en masse, the API does not return matches until all input has been received. This is necessary because an en masse post-processing task requires all of the matches at the same time.

The Eduction SDK includes reference documentation for the API. For more information about the SDK, see Eduction SDK Package.

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