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User-subjective approach
The user-subjective approach is the first interaction design approach dedicated specifically to personal information management (PIM). The approach offers design principles with which PIM systems (e.g. operating systems, email applications and web browsers) can make ''systematic'' use of subjective (i.e. user-dependent) attributes. The approach evolved in three stages: (a) ''theoretical foundations'' first published in a Journal of the American Society for Information Science and Technology during 2003.〔http://onlinelibrary.wiley.com/doi/10.1002/asi.10283/abstract〕 The paper introduces the approach and its design principles (b) ''evidence and implementation'' was published in another JASIST paper in 2008.〔http://onlinelibrary.wiley.com/doi/10.1002/asi.20738/full〕 The paper gives empirical evidence in support of the approach as well as seven novel design schemes that derives from it (see also (the user-subjective website )). It has won the Best JASIST paper award in 2009.〔http://www.asis.org/awards/jasis_paper.html〕(c) ''specific design evaluation'' this stage has already begun with evaluation of the first user-subjective design prototype called GrayArea in a Conference on Human Factors in Computing Systems paper published in 2009.〔http://portal.acm.org/citation.cfm?id=1518745〕
==Theoretical foundations==
The user-subjective approach takes advantage of the fact that in PIM the person who retrieves the information is the same person who had previously stored it. PIM can be seen as a communication between the person and him\her self at two different times: the time of storage and the time of retrieval. The PIM system design should help facilitate that unique communication by allowing the user use subjective (user-dependent) attributes in addition to the standard objective ones. PIM systems should capture these subjective attributes when the user interacts with the information item (either automatically or by using direct manipulation interface) in order to help the user retrieve the item later on.
The user-subjective approach identifies three subjective attributes – the ''project'' which the item was classified to, its degree of ''importance'' to the user, and the ''context'' in which the item was used during the interaction with it. The approach also assigns a design principle for each. The principles (discussed below) are deliberately abstract to allow for a variety of different implementations.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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