1. A method comprising: selecting a first configuration item from a source dataset; determining whether the first configuration item matches a second configuration item of a target dataset of a configuration management database based on application of a statistical rule; and responsive to a successful match based on the application of the statistical rule: determining whether a threshold value associated with the statistical rule meets a predetermined acceptance value, responsive to determining that the threshold value meets the predetermined acceptance value, marking the first configuration item as identified with the second configuration item, and adjusting the threshold value.