No evaluation and user test had yet been done. By implicit rating is meant gathering information from user's behaviour. Computer user behaviour, record user actions, infer ratings from these actions. When people are asked to rate both explicitly and implicitly, the correlation is high. My presentation aimed at defining an architecture for rating and filtering, such that different researchers could develop different modules and have them work together.
Rating is common in everyday life, also outside of the computer area.
He began by giving a description of the Web4Groups groupware system , and then described the voting subsystem of Web4Groups. Calculate the rating for each object and then sort the objects by their ratings. He argued for situated information filtering, filtering adjusted to the situation of the user. For example, interest is not a stable property, interest grows while reading a document on a new topic. These kind of filters are time limited, and assume from user behaviour what topics he likes or does not like.