The next International UDC Seminar entitled "Classification & Visualization: Interfaces to Knowledge" will take place in the Koninklijke Bibliotheek in The Hague, on 24-25 October 2013. This is the fourth in a series of International UDC Seminars devoted to advances in documentary classification research and their application in a networked environment.

The objective of this conference is to explore cutting edge advances and techniques in the visualization of knowledge across various fields of application and their potential impact on developments in the more main stream bibliographic and documentary classifications.

The conference will be opened by Emer. Prof. W. Boyd Rayward, well-known historian of the international organization of knowledge and the history of documentation and information science. His keynote address will set the scene for discussions on models and metaphors of knowledge and information visualization that bridge historical and technological perspectives.