Co-presence of forms and wares

Our previous post mentioned the issues concerning the definition of non-geographical networks. In this blog post we will give an example of such networks, and how it might lead to interesting insights about pottery distributions.

The production centres of major eastern table wares range from a limited number of cities (e.g. Eastern Sigillata C (ESC)) to a more widespread regional production (e.g. African Red Slip Ware (ARSW)). Each centre produces fine wares with a specific fabric, making it possible to differentiate their distribution patterns. Such distributions might be visualised as networks in which sites are the individual nodes and the relationships between sites represent the number of wares (not sherds) that are present at both sites at the same time-period. This would provide a series of very simple but rather informative networks representing the sites involved in the distribution of a specific table ware, which can be compared and added up with the networks of all other wares and analysed through time in 15-year periods.

These networks might provide useful insights on the relationships between cities and most importantly people, who were involved in inter-regional ceramic trade.

Another approach focuses on the individual forms which, in contrast to the general distinctions between producing centres, presents us with a different type of information going back to the individuals producing the pots and the people for whom they are made. In addition, a single form can be produced in several centres and in different table ware fabrics, allowing for the rise and fall in popularity and the diffusion of pottery forms to be analysed. A network of pottery forms represents sites related to each other on the basis of the number of forms they have in common in a specific period.

Such networks allow the study of the distribution of individual pottery forms, to group sites based on the simmilarity or difference of their pottery assemblages, and to see the evolution of these disstribution patterns in 15-year periods.

The two non-geographical networks described above might form the basis for discussions around the following topics: are the distribution patterns of individual forms dependant on/similar to the existing inter-regional socio-economical networks of major fine ware distribution? Do forms that are produced in multiple table ware fabrics circulate in networks that are similar to one or more of these wares? Are form/ware networks linked to social networks of potters, traders, land owners and how can we distinguish between the actors in pottery trade?

An important issue we need to raise, however, is that in the above networks we only used the number of co-present wares/forms rather than the number of co-present sherds. Although we might avoid the bias of archaeological research interests and emphases in this way, we might also miss a chance of having an indicator of the intensity of distribution as represented in the sheer volume of sherds.

The above networks can be tested on their validity by confronting them with their socio-economic and political framework (Bes 2007). We have not yet figured out a way to test these hypotheses quantitatively.

Any comments on these networks, the questions they might answer or the very nature of this approach are more than welcome!

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