TY - JOUR AB - Purpose–Unstructured knowledge management (UKM) becomes indispensable for the support of knowledge work. However, unstructured knowledge is inconvenient and difficult for sharing, organizing and acquisition. This paper seeks to present the development and implementation of a multi‐facet taxonomy system (MTS) for effective management of unstructured knowledge.Design/methodology/approach–Multi‐facet taxonomy is a multi‐dimensional taxonomy which allows the classification of knowledge assets under multiple concepts at any levels of abstraction. The MTS system is based on five components: multi‐dimensional taxonomy structure, thesaurus model, automatic classification mechanism, intelligent searching, and self‐maintenance of taxonomy, respectively. Artificial intelligence (AI) and natural language process (NLP) technologies are used in the development of the MTS.Findings–With the successful development of the MTS, the accuracy of categorization of unstructured knowledge is significantly improved. It also allows an organization to capture the valuable tacit knowledge embedded in the unstructured knowledge assets. This helps an organization to explore business opportunities for continuous business improvement.Practical implications–The implementation of the MTS system not only dramatically reduces the human effort, time and cost for UKM but also allows an organization to capture valuable knowledge embedded in unstructured knowledge assets.Originality/value–As the knowledge work and task become more complex and are dynamically changing with time and involve multiple concepts, the MTS addresses the inadequacy of conventional single dimensional taxonomy for managing unstructured knowledge. The self‐maintenance capability of the MTS ensures that the taxonomy is up‐to‐date and new knowledge is classified automatically for better knowledge sharing and acquisition. VL - 9 IS - 6 SN - 1367-3270 DO - 10.1108/13673270510629972 UR - https://doi.org/10.1108/13673270510629972 AU - Cheung C.F. AU - Lee W.B. AU - Wang Y. PY - 2005 Y1 - 2005/01/01 TI - A multi‐facet taxonomy system with applications in unstructured knowledge management T2 - Journal of Knowledge Management PB - Emerald Group Publishing Limited SP - 76 EP - 91 Y2 - 2024/09/19 ER -