从此操作返回的是一组满足过滤标准的数字列表，我将其放入一个集合来删除重复值。
The return from this operation is a list of numbers that meet my filter criteria, which I coerce into a set to remove duplicates.
提出了利用有效权值和长度过滤的优化算法进行记录匹配，减少重复记录的检测时间，提高算法的效率；
In record match, we came up with the optimized method using valid weight value and length filtering to reduce the runtime of original algorithm and improve its efficiency.
同样，为了减少函数调用次数，我们提前进行重复值过滤。
Once again, the total number of function calls can be reduced byfiltering the distinct values, rather than calling the function for each row.
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