下拉选择

从下拉菜单中进行单选，适用于较长的选项列表。

下拉选择标注

下拉选择类型提供一个下拉菜单用于单选。最适合选项较多（5个以上）且单选按钮会显得过于拥挤的情况。

基本配置

yaml

annotation_schemes:
  - name: "category"
    description: "Select the document category"
    annotation_type: "select"
    labels:
      - name: "news"
      - name: "opinion"
      - name: "tutorial"
      - name: "review"
      - name: "other"

配置选项

字段	类型	必填	描述
`name`	string	是	标注的唯一标识符
`description`	string	是	显示给标注者的说明
`annotation_type`	string	是	必须为 `"select"`
`labels`	array	是	可选选项列表
`default`	string	否	默认选中的选项
`required`	boolean	否	是否要求必须选择

示例

文档分类

yaml

- name: "document_type"
  description: "What type of document is this?"
  annotation_type: "select"
  labels:
    - name: "Research Paper"
    - name: "News Article"
    - name: "Blog Post"
    - name: "Technical Documentation"
    - name: "Legal Document"
    - name: "Marketing Material"
    - name: "Personal Communication"
    - name: "Other"
  required: true

语言选择

yaml

- name: "language"
  description: "What language is this text written in?"
  annotation_type: "select"
  labels:
    - name: "English"
    - name: "Spanish"
    - name: "French"
    - name: "German"
    - name: "Chinese"
    - name: "Japanese"
    - name: "Other"
  default: "English"

带工具提示

yaml

- name: "genre"
  description: "Select the genre of this text"
  annotation_type: "select"
  labels:
    - name: "Fiction"
      tooltip: "Made-up stories and narratives"
    - name: "Non-fiction"
      tooltip: "Factual content based on real events"
    - name: "Poetry"
      tooltip: "Verse and poetic forms"
    - name: "Drama"
      tooltip: "Scripts and theatrical works"

输出格式

下拉选择标注输出所选选项的名称：

json

{
  "id": "item_1",
  "annotations": {
    "category": "tutorial"
  }
}

何时使用下拉选择还是单选

使用下拉选择	使用单选
5个以上选项	2-5个选项
标注者熟知选项	需要一次看到所有选项
空间有限	键盘快捷键很重要
较长的选项标签	需要快速视觉扫描

最佳实践

按逻辑排列选项 - 按字母顺序、按频率或按语义分组
包含"其他"选项 - 当列表可能不完整时
使用清晰、独特的标签 - 避免含糊或重叠的类别
设置合理的默认值 - 如果某个选项最常见，考虑将其设为默认