public Integer getBackTestWindowOffset() {
        return this.backTestWindowOffset;
    }
<p>
The point from the end of the dataset where you want to split the data for model training and testing
(evaluation). Specify the value as the number of data points. The default is the value of the forecast horizon.
<code>BackTestWindowOffset</code> can be used to mimic a past virtual forecast start date. This value must be
greater than or equal to the forecast horizon and less than half of the TARGET_TIME_SERIES dataset length.
</p>
<p>
<code>ForecastHorizon</code> &lt;= <code>BackTestWindowOffset</code> &lt; 1/2 * TARGET_TIME_SERIES dataset length
</p>

@return The point from the end of the dataset where you want to split the data for model training and testing
        (evaluation). Specify the value as the number of data points. The default is the value of the forecast
        horizon. <code>BackTestWindowOffset</code> can be used to mimic a past virtual forecast start date. This
        value must be greater than or equal to the forecast horizon and less than half of the TARGET_TIME_SERIES
        dataset length.</p>
        <p>
        <code>ForecastHorizon</code> &lt;= <code>BackTestWindowOffset</code> &lt; 1/2 * TARGET_TIME_SERIES
        dataset length
aws-java-sdk-forecast/src/main/java/com/amazonaws/services/forecast/model/EvaluationParameters.java