public void setAverErrors(List< List<Double>> l_averErrors) {
        if(!this.averErrors.isEmpty()) {this.averErrors.clear();}
        /*this.averErrors.add(new ArrayList<Double>()); //trainig
        this.averErrors.add(new ArrayList<Double>()); //testing
        this.averErrors.add(new ArrayList<Double>()); //validation*/
        this.averErrors = l_averErrors;
    }