(calibration_circe_run)=
# Running the estimate

Since the `TCirce` class does not inherit from the `TCalibration` class (as it is not strictly a calibration 
method), it provides its own execution method. This method is named `estimate` (rather than `estimateParameters`) 
and must be called directly from the `TCirce` object to compute the vector of biases and the correlation matrix. 
Its prototype is:

````{only} cpp
```cpp
void estimate(Option_t * option = "");
```
````

````{only} py
```python
estimate(option = "")
```
````

This method accepts a single optional argument, which can specify options for running the process. At present, 
no options are implemented for this class, so the argument should not be used.