At present, user modeling has some shortcomings such as lack of semantic in user model representation, difficulty in user interest acquisition and user model evolution.

但是，目前的用户建模技术普遍存在模型表示缺乏语义、兴趣获取困难和模型难以进化等缺点。

youdao

At present, user modeling has some shortcomings such as lack of semantic in user model representation, difficulty in user interest acquisition and user model evolution.

但是，目前的用户建模技术普遍存在模型表示缺乏语义、兴趣获取困难和模型难以进化等缺点。

youdao