用户等级之间的区别?。

What are the different user classes?

youdao

尽管网页的标题描述Tweefind根据Twitter的用户等级搜索，目前尚不清楚的这点其他方面的意思。

Despite the title of the page describing Tweefind as a Twitter search by user rank, it's unclear what the dots otherwise mean.

youdao

针对传统协同过滤推荐算法的稀疏性、扩展性问题，提出了结合似然关系模型和用户等级的协同过滤推荐算法。

To address these problems, a collaborative filtering recommendation algorithm combining probabilistic relational models and user grade (PRM-UG-CF) is presented.

youdao