Abstract: The present disclosure relates to frameworks and methodologies for enabling categorisation and/or searching of digitised information, including clinical report data. Embodiments of the invention have been particularly developed to assist categorisation of digitised information, such as clinical report data, in a streamlined manner based on a pre existing set of classification codes. This, in some embodiments, enables the discovery and extraction of meaningful patterns from unstructured clinical reports. Further embodiments of the invention have been particularly developed to assist in the discovery and extraction of meaningful patterns from an unstructured set of digitised information such as unstructured clinical reports. While some embodiments will be described herein with particular reference to those applications, it will be appreciated that the invention is not limited to such a field of use, and is applicable in broader contexts.