推荐与搜索

这里有一篇关于推荐系统研究的评论，反映了一个问题，是由系统推荐，还是由用户自己搜索的问题？当然，出于客户和商家的目的，答案会有不同。

Relative to an 'older' world where choice was driven by bestseller lists, recommenders may increase diversity, but relative to a 'newer' world of search and many offerings, recommenders may decrease it.
（相对过去的销售热榜方式，推荐系统可能提高了多样性，然而相对新出现的搜索等方式，推荐系统可能是减少了多样性。）
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Recommenders can push each person to new products, but they often push us toward the same new products
（尽管推荐系统能够将新产品推给每一个人，但它们也令人们倾向选择同一种新产品。）
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I suspect that there's a tacit assumption that recommenders drive diversity.
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Recommenders exemplify consumers' growing power to focus on what they like and filter out all else.