Utilizing User Behaviors with Semantic Metadata

With the explosion of digital information, many people are overwhelmed by the sheer amount of information available to them. How to tailor the information to cater to individual needs becomes an important issue for many information systems. One promising approach is to capture an individual user behavior in order to facilitate this user to navigate through existing information and notify this user when relevant new information becomes available. Some online services have started to utilize this approach, for example the recommender system used by Amazon.