> For the complete documentation index, see [llms.txt](https://docs.docbits.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.docbits.com/chinese/guan-li-yu-she-zhi/settings/document-processing/decision-trees/priority-policy.md).

# 优先级策略

选择此选项后，可以为每条规则设置优先级。所选数字越小，优先级越高（即优先级 1 最高）。系统会按优先级顺序评估规则，并应用匹配的最高优先级规则。

**示例：**

<table><thead><tr><th width="137">规则</th><th width="110">优先级</th><th width="268">条件</th><th>返回组</th></tr></thead><tbody><tr><td>1</td><td>5</td><td>总金额 &#x3C;= 1000</td><td>GROUP_1</td></tr><tr><td>2</td><td>4</td><td>总金额 &#x3C;= 2000</td><td>GROUP_2</td></tr><tr><td>3</td><td>3</td><td>总金额 &#x3C;= 3000</td><td>GROUP_3</td></tr><tr><td>4</td><td>2</td><td>总金额 &#x3C;= 4000</td><td>GROUP_4</td></tr><tr><td>5</td><td>1</td><td>总金额 &#x3C;= 5000</td><td>GROUP_5</td></tr></tbody></table>

如果总金额为 **1500**，系统将评估以下规则：

* **规则 1**：总金额 <= 1000（不匹配）
* **规则 2**：总金额 <= 2000（匹配）
* **规则 3**：总金额 <= 3000（匹配）
* **规则 4**：总金额 <= 4000（匹配）
* **规则 5**：总金额 <= 5000（匹配）

由于优先级按 **5、4、3、2、1** 的顺序应用，匹配的最高优先级规则是 **规则 5**（**GROUP\_5**）。决策树将返回 **GROUP\_5**，因为 **规则 5** 的优先级最高（优先级 1）。


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