围绕这个中心主题发散相关副主题，并将每个副主题和中心用一条线连接起来。
Develop the related subtopics around this central topic, connecting each of them to the center with a line.
副主题包括：特许经营业务和小型企业管理。
Subtopics include: franchise operations and small business management.
该系统从文献的题名中抽取并识别主题模式，相当有效地解决了医学科技文献的自动标引中涉及的主题词和副主题词的组配问题。
The system has a relatively high performance in subject indexing problem, which involves the procedure of combination of medical headings and subheadings.
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