what model return negative forecasts nnetar return positive forecast is nnetar positive what nnetar value are positive do nnetar predictions return negative forecast data nnetar negative forecast does nnetar return a negative forecast value do my forecasts return positive what is negative forecast using nnetar when is the forecast value positive is nnetar forecast positive nnetar returns negative forecasting nnetar return negative forecast values what is nnetar used for how to use nnetar forecast what is nnetar and return negative what is nnetar a good forecast why does nnetar return negative forecast values nnetar forecast negative will nnetar return negative forecast value