Criteria for ground truth of food substitutions

Criteria for the ground truth food substitutions were based on expert input. Criteria were made for different food groups. Valid substitutions of food products were based on 1) its nutritional values; 2) its overall healthiness; and 3) its food group.食品替代方案的真实标注（ground truth）标准基于专家意见制定。该标准针对不同食品类别（food group）设立。判定食品产品是否为有效替代方案的依据包括：1）其营养价值；2）其整体健康属性；3）其所属食品类别。