Using business item instances in a simulation can be useful, particularly if you want to test your logic, or run a simulation based on real data.
在模拟中使用业务项实例非常有用，特别是希望测试逻辑或者根据实际数据运行模拟时更是如此。
Our algorithm, item-to-item collaborative filtering, scales to massive data sets and produces high-quality recommendations in real time.
我们的算法，也就是商品到商品的协同过滤，符合海量的数据集和产品量，并能实时得到高品质的推荐。
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