“The sample comprises exclusively Bell Beaker decorated ceramics. The sample … is a subset of a larger open-access database … and it contains information from 99 archaeological contexts.” “The Bell Beaker vessels included were all complete enough to consider the techniques used to decorate them. Small fragments and those that did not provide suitable information were ruled out.” “As the Jaccard index has been calculated, the final information was limited to the presence-absence of the studied decorative types in each archaeological level.” “The similarity coefficient used to conduct that study is the Jaccard … as it does not take into account the absolute frequencies in the calculation, but … the presence-absence of each item.” “The Jaccard coefficient also needs to be normalized to compensate for the variability between the chronological windows with few variables present, so we have used the formula proposed in previous studies.” “We have set a threshold of 0.25 to accept a prediction… The threshold value selection follows no specific statistical criterion and we have followed the recommendations of the creators of the method.” “Once each context has its chronological attribution, the next step is the composition of the similarity networks that are used to perform the SNA.” “The networks have been arranged according to their geographical situation, using the Gephi application… Once composed of the networks corresponding to each window, some metrics have been analyzed to determine the diachronic evolution.”