Toward personalized digital library for providing "Information JIT"

The personalized digital library for providing users with proper information just in time (JIT) is proposed. This digital library can support not only document retrieval task, but also users' reading and comprehension task. This function can be realized by recording the person-dependent information, which is about human behavior toward documents, such as highlighting, marking, annotating, etc. By utilizing the digital pen and paper with dot-pattern, handwritten annotations on paper documents can be simultaneously digitized and stored in the corresponding e-document. Furthermore, hybridization of real world and e-world in digitizing personal annotations is proposed. This information on users' annotations makes it possible to retrieve document based on the implicit memory and to provide information support appropriate to the situation with users. The personalized digital library proposed in this paper is to be developed.