这个词在不同的语境不同的学科中有不同的含义，在统计领域基本上就是字面意思，基准预测

比如

Baseline projection 2014: The transition to a green Danish energy system is accelerating

baseline projections drop markedly over the next few years as a share of output and average 3.1 percent of GDP from 2014 to 2021