Yes, library borrowing history can be used to determine someone's interests to a certain extent. People usually borrow books, journals, and other materials related to the topics they are interested in, so borrowing history can reflect their reading preferences and areas of interest. Here are some possible methods: 1. **Book category analysis**: By analyzing the types of books someone borrows (such as fiction, history, science, art, etc.), you can get a general idea of their interests. 2. **Hot topics**: If someone frequently borrows books on a specific topic or field, it means that they have a strong interest in these topics. 3. **Reading frequency**: The frequency and number of borrowings can also reflect how enthusiastic a person is about a certain type of book. 4. **Author preference**: If someone often borrows books by a specific author, it may indicate that they have a special preference for the author's style or subject matter. It should be noted that borrowing history may not be a completely accurate reflection of an individual's interests, because an individual's reading choices may be influenced by different factors, such as social circles, course requirements, work needs, etc. In addition, for privacy and ethical reasons, many libraries have strict regulations on the confidentiality of borrowing records, so you must comply with relevant laws and regulations when using such data.