These data drive stocking decisions that optimize floor space usage .
这些数据引导进货决策，以便使地面空间的利用最优化。
英语百科
Space–time tradeoff
In computer science,
A space-time or time-memory tradeoff is therefore a case where an algorithm or program trades increased space for decreased time. The utility of a given space-time tradeoff is affected by related fixed and variable costs (of, e.g., CPU speed, RAM space, hard-drive space), and is subject to diminishing returns.