TY - JOUR TI - The foundation of the concept of relevance AU - Hjørland, Birger T2 - Journal of the American Society for Information Science and Technology AB - In 1975 Tefko Saracevic declared “the subject knowledge view” to be the most fundamental perspective of relevance. This paper examines the assumptions in different views of relevance, including “the system's view” and “the user's view” and offers a reinterpretation of these views. The paper finds that what was regarded as the most fundamental view by Saracevic in 1975 has not since been considered (with very few exceptions). Other views, which are based on less fruitful assumptions, have dominated the discourse on relevance in information retrieval and information science. Many authors have reexamined the concept of relevance in information science, but have neglected the subject knowledge view, hence basic theoretical assumptions seem not to have been properly addressed. It is as urgent now as it was in 1975 seriously to consider “the subject knowledge view” of relevance (which may also be termed “the epistemological view”). The concept of relevance, like other basic concepts, is influenced by overall approaches to information science, such as the cognitive view and the domain-analytic view. There is today a trend toward a social paradigm for information science. This paper offers an understanding of relevance from such a social point of view. DA - 2010/02/01/ PY - 2010 DO - 10.1002/asi.21261 DP - Wiley Online Library VL - 61 IS - 2 SP - 217 EP - 237 LA - en SN - 1532-2890 UR - https://onlinelibrary.wiley.com/doi/abs/10.1002/asi.21261 Y2 - 2018/04/25/22:21:19 ER - TY - JOUR TI - Facet analysis: The logical approach to knowledge organization AU - Hjørland, Birger T2 - Information Processing & Management AB - The facet-analytic paradigm is probably the most distinct approach to knowledge organization within Library and Information Science, and in many ways it has dominated what has be termed “modern classification theory”. It was mainly developed by S.R. Ranganathan and the British Classification Research Group, but it is mostly based on principles of logical division developed more than two millennia ago. Colon Classification (CC) and Bliss 2 (BC2) are among the most important systems developed on this theoretical basis, but it has also influenced the development of other systems, such as the Dewey Decimal Classification (DDC) and is also applied in many websites. It still has a strong position in the field and it is the most explicit and “pure” theoretical approach to knowledge organization (KO) (but it is not by implication necessarily also the most important one). The strength of this approach is its logical principles and the way it provides structures in knowledge organization systems (KOS). The main weaknesses are (1) its lack of empirical basis and (2) its speculative ordering of knowledge without basis in the development or influence of theories and socio-historical studies. It seems to be based on the problematic assumption that relations between concepts are a priori and not established by the development of models, theories and laws. DA - 2013/03// PY - 2013 DO - 10.1016/j.ipm.2012.10.001 VL - 49 IS - 2 SP - 545 EP - 557 J2 - Information Processing & Management LA - en SN - 0306-4573 UR - http://www.sciencedirect.com/science/article/pii/S0306457312001203 ER -