I have been thinking about the task of developing a model of the classes and attributes of an evidence ontology to support Evidence Based Enterprise Architecture. Having searched on Google, not that i was expecting to find an exact match, i came across something similar for the field of biosciences.
It was interesting to read how they have approached the problem. They describe the use of their ontology as a means to record a collection of assertions, the sources of the assertions and the degree of confidence experts hold in the assertions.
There are very similar relationships here with the requirements for an evidence ontology for evidence based enterprise architecture. Firstly the means to classify particular assertions made in the enterprise architecture. For example these assertions can be found within the artifacts such as models and specifications, the architectural and solution building blocks and statements recorded in architectural views.
Secondly the ability to classify the degree of confidence in the assertions as expressed by senior architects and subject matter experts. Measuring the confidence is perhaps a two fold activity whereby the author assess the confidence and this is either accepted or revised by an expert.