| Interface | Description | 
|---|---|
| ICostEstimate | A cost estimator interface. | 
| Class | Description | 
|---|---|
| ComputationCostEstimator | |
| CostEstimatorBuilder | |
| CostEstimatorFactory | |
| DistinctCostEstimator | A Cost based estimator that based the compression and co-coding cost on the number of distinct elements in the column
 groups. | 
| InstructionTypeCounter | |
| MemoryCostEstimator | 
| Enum | Description | 
|---|---|
| CostEstimatorFactory.CostType | 
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