Third, it becomes impossible for readers to indicate that they are looking for types of information that are not covered by the service. Finally, as the information changes over time, the classification schema may have to change. Editors, information brokers, readers, and information services may all use different classification schemas, and change them over time. Techniques from collaborative and intelligent filtering as well as information retrieval are used to create tools that allow services, brokers, and readers to communicate and synchronize their classification schemas. The service supports the collection, filtering, and browsing of conference and workshop calls.
Editors can review user profiles and add meta-data to calls.
The individual filter is initially provided by the user as a user profile that can be inspected and changed at any time. If and when the mismatch goes over a certain threshold, the system will suggest that the profile be changed, possibly but not necessarily replacing it with the candidate profile. The ConCall service is currently under experimental evaluation. The buzzword functionality used within ConCall requires further study. It is possible to envision several ways to enhance it.