Research on Personal Digital Library

Researches on the development of personal digital library at home and abroad are presently at the initial stage.Personal digital library is the extension of public digital library services.It takes information and knowledge sharing as its principle,and it aims at the transformation from information management to knowledge management.The paper discusses some research areas such as definition,essence,function,model,information organization,knowledge organization,retrieval,knowledge management etc.The research of personal digital library is related to many disciplinaries such as psychology,cognitive science,behavior science,computer science,information science,semantics etc.