A NOTE ON LEARNING CURVE PARAMETERS
这篇短文说明了单位学习曲线与累积平均学习曲线中参数可行取值范围的差异，对正确应用学习曲线理论很重要。
Abstract This note describes differences in the feasible range of values that the learning curve parameter may take when a unit learning approach is used as opposed to a cumulative‐average learning curve. Clarification of this point is important because learning curve theory now is used in a variety of areas.