Fig. 2

Cont-ID rules explanation. There are two input files, one for the alien data and one for the sample data. Alien file is used to calculate each alien control metric after normalisation (except control 3). The sample file is used to calculate each data metric after normalisation (except deduplication ratio) (the small “r” in table stands for “raw”). Each alien control metric is associated with a user (manually) designed adaptability metric (X, Y or Z) to compose each rule’s threshold. Finally, each data metric is compared to the corresponding threshold in order to obtain the three rules used in Cont-ID