> For the complete documentation index, see [llms.txt](https://docs.synfutures.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.synfutures.com/jp/oyster-amm/sekyuriti/saretasupottoindekkusu.md).
# 平滑化されたスポットインデックス価格
基礎となるオラクルから取得された生のスポット価格は、直接使用されるのではなく、特定の指数移動平均（EMA）手法を用いて価格変動が平滑化されます。これにより、スポットインデックス価格が容易に操作されることを防ぎ、市場の安定性が保たれます。価格変動は直接的にマーク価格に影響を与え、マーク価格はすべてのポジションの安全性を決定するため、これを平滑化することで市場の安全が確保されます。
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