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话说CTR模型的交互类的特征是怎么做的和存储的? #19
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不是,实际上user和item 有交互的量级就1亿, 最简单的尝试方式,做个hash就ok |
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比如有user有1000W,item有1000W,那么要有 1000W*1000W = 1000000亿 的特征数据?
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