A typology is the result of the classification of things according to their physical characteristics.

The products of the classification, i.e. the classes, are also called types. From this perspective, the research focusses on an ‘objectified’ categorization of the collection through ‘metadata’. Metadata or ‘data about data’ is the data describes the contents and context of data in order to facilitate in the discovery of relevant information. The metadata that was used to organize, were ‘location’, ‘classification’ (divided into ‘groups’) and ‘institute’. It is ‘objectified’, since all this data come from specific words that were found in the article.