根据

根据

"According to" or "based on."

In this sentence, '根据' is used to indicate the basis or reference point for an action, which in this case is the map being used to determine direction.

我们是根据地图来寻找方向的。

We find our direction according to the map.

'根据' indicates here that the conclusions from the research serve as the underlying data or foundation on which the policy construction was based.

这个政策是根据调查得出的结论制定的。

This policy was formulated based on the conclusions derived from the research.

Here, '根据' introduces the source or foundation of the decision or action, which relates to the expert's suggestions in this instance.

根据专家的建议，我们改进了设计。

Based on the expert's suggestions, we improved the design.