用户兴趣 behavior targeting

The user’s interests may be expressed as terms, categories, or links, or any combination thereof


用户兴趣的表达方式可以用词、类目、链接或者他们的组合。


The user profile information is derived from any of prior searches by the user, prior search results, user activities in interacting with prior search results, user demographic, geographic, or psychographic information, expressed topic or category preferences, and web-sites associated with the user. 


用户的profile可以通过用户之前的搜索、搜索结果、点击，人口、地理、心理图谱信息来表达。