# Performance Evaluation

**Performance Evaluation** tool is an OntoGuiWeb module supporting the definition of production plans that are need to evaluate the performance of a production system.

A production plan is defined in terms of:

* **Duration**
* **Production Batches** to be produced. Batches are in turn defined by:
  * **Part Type**
  * **Quantity**
  * **Process Plan**
* **Production Systems** whose elements can be used to execute the production plan
* **Controllers** managing the execution of the production plan

In addition, a production plan can be associated with one or more performance histories describing the actual or simulated execution of the production plan. A **performance history** can be instantiated from a log of events (see "Import from TXT file") provided by a monitoring systems or generated by a performance evaluation method, e.g. discrete event simulation (DES). A Mixed-integer Linear Programming (**MILP**) version of a **DES** is available. &#x20;

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