| Interface | Description | 
|---|---|
| AllocatedEvaluator | 
 Represents an Evaluator that is allocated, but is not running yet. 
 | 
| CompletedEvaluator | 
 Represents a successfully closed Evaluator. 
 | 
| EvaluatorDescriptor | 
 Metadata about an Evaluator. 
 | 
| EvaluatorRequestor | 
 Interface through which Evaluators can be requested. 
 | 
| FailedEvaluator | 
 Represents an Evaluator that became unavailable. 
 | 
| Class | Description | 
|---|---|
| EvaluatorRequest | 
 A request for one ore more Evaluators. 
 | 
| EvaluatorRequest.Builder | 
EvaluatorRequests are build using this Builder. | 
| Enum | Description | 
|---|---|
| EvaluatorType | 
 Enumeration of all Evaluator types supported by REEF. 
 | 
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