Update of time-invalid information in Knowledge Bases through Mobile Agents – By Ilaria Tiddi

Update of time-invalid information in Knowledge Bases through Mobile Agents – By Ilaria Tiddi

Managing dynamic data in knowledge bases, i.e. statements that are only valid for a certain period of time, is a very well-known problem for knowledge acquisition and representation, because data need to be constantly re-evaluated to allow reasoning. Let us imagine a very basic example, such as the knowledge base representing the Knowledge Media Institute working environment. While information about locations is static (e.g. the coordinates of a room), temperature, humidity, wifi signal or number of people in a room change often and the statements about them in the knowledge base might not be valid anymore after some time. Common solutions to this, e.g. providing time-stamped versions of the knowledge base or using sensors to constantly stream the information, might be suitable for a simplified scenario such as the KMi one, but are costly and less flexible in terms of data collection if applied at large-scale (e.g. in a