# Evaluation recipe[¶](https://doc.dataiku.com/dss/latest/machine_learning/time-series-forecasting/evaluation.html#evaluation-recipe "Permalink to this headline")

* Input dataset

* Output datasets

* Refitting for statistical models

Warning

*Model Evaluation Stores* (MES) are not supported for time series forecasting models.

## Input dataset[¶](https://doc.dataiku.com/dss/latest/machine_learning/time-series-forecasting/evaluation.html#input-dataset "Permalink to this headline")

The input dataset for the evaluation recipe should contain at least:

* The time column

* The time series identifiers columns (if any)

* The target column

* The external features columns (if any)

## Output datasets[¶](https://doc.dataiku.com/dss/latest/machine_learning/time-series-forecasting/evaluation.html#output-datasets "Permalink to this headline")

### Output dataset[¶](https://doc.dataiku.com/dss/latest/machine_learning/time-series-forecasting/evaluation.html#output-dataset "Permalink to this headline")

The evaluation recipe computes the evaluation dataset by moving the forecast/evaluation window (of size *forecast horizon*) from the end of the input dataset to the beginning as many times as possible (given the size of the timeseries), or a fixed number of times if the **Max. nb. forecast horizons** is set.

### Metrics dataset[¶](https://doc.dataiku.com/dss/latest/machine_learning/time-series-forecasting/evaluation.html#metrics-dataset "Permalink to this headline")

The output metrics dataset contains the computed metrics. If the input dataset contains multiple time series, choose between aggregated metrics (one single row, default) or per time series metrics (one row per series).

## Refitting for statistical models[¶](https://doc.dataiku.com/dss/latest/machine_learning/time-series-forecasting/evaluation.html#refitting-for-statistical-models "Permalink to this headline")

Statistical models (ARIMA and Seasonal LOESS) can be refit on the input data before evaluation.

Warning

Evaluation with Seasonal LOESS only works with refitting enabled.
