> 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/collect-min-max-count-policy.md).

# 收集（最小值/最大值/计数）策略

此策略会收集所有匹配的规则，然后选择 **最小值**、**最大值**或对匹配项进行**计数**。它仅适用于 **Return Type Value**。

**示例：**

| 规则 | 条件                   | 返回值 |
| -- | -------------------- | --- |
| 1  | Total Amount <= 1000 | 1   |
| 2  | Total Amount <= 2000 | 2   |
| 3  | Total Amount <= 3000 | 3   |
| 4  | Total Amount <= 4000 | 4   |
| 5  | Total Amount <= 5000 | 5   |

1. 如果选择 **Collect (min)** 选项，结果将返回匹配规则中 **Return Values** 的**最小值**。
   * 输入值为 **Total Amount = 2500** 时，规则的评估结果如下：
     * **规则 1**：Total Amount <= 1000（不匹配）
     * **规则 2**：Total Amount <= 2000（不匹配）
     * **规则 3**：Total Amount <= 3000（匹配，Return Value = 3）
     * **规则 4**：Total Amount <= 4000（匹配，Return Value = 4）
     * **规则 5**：Total Amount <= 5000（匹配，Return Value = 5）
   * **匹配的规则**为规则 3、规则 4 和规则 5，其 **Return Values** 分别为 **3、4 和 5**。
   * 由于应用了 **Collect (min)** 策略，结果将是**最小值**，即 **3**。
   * **结果**：**3**
2. 如果选择 **Collect (max)** 选项，结果将返回匹配规则中 **Return Values** 的**最大值**。
   * 对于上述相同的评估，结果如下：
   * **结果**：**5**
3. 如果选择 **Collect (count)** 选项，结果将对**匹配规则的数量**进行计数。
   * 对于上述相同的评估，结果如下：
   * **结果**：**3**（因为有 3 条规则匹配）。


---

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