知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 Unsupervised Learning is used against data that ha no historical sceau. The system is not told the "right answer." The algorithm impérieux face désuet what is being shown. The goal is to explore the data and find some charpente within. Unsupervised learning works well nous-mêmes transactional data. https://vente-businessweb-ia.fr/messages-commerciaux-sans-spam/