Methods for Summarizing Radiocarbon Datasets
TLDR
Three different approaches are compared: “Sum” distributions, postulated undated events, and kernel density approaches and their suitability for visualizing the results from chronological and geographic analyses considered for cases with and without useful prior information.Abstract:
Bayesian models have proved very powerful in analyzing large datasets of radiocarbon (14C) measurements from specific sites and in regional cultural or political models. These models require the prior for the underlying processes that are being described to be defined, including the distribution of underlying events. Chronological information is also incorporated into Bayesian models used in DNA research, with the use of Skyline plots to show demographic trends. Despite these advances, there remain difficulties in assessing whether data conform to the assumed underlying models, and in dealing with the type of artifacts seen in Sum plots. In addition, existing methods are not applicable for situations where it is not possible to quantify the underlying process, or where sample selection is thought to have filtered the data in a way that masks the original event distribution. In this paper three different approaches are compared: “Sum” distributions, postulated undated events, and kernel density approaches. Their implementation in the OxCal program is described and their suitability for visualizing the results from chronological and geographic analyses considered for cases with and without useful prior information. The conclusion is that kernel density analysis is a powerful method that could be much more widely applied in a wide range of dating applications.read more
Citations
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Dairy pastoralism sustained eastern Eurasian steppe populations for 5,000 years
Shevan Wilkin,Alicia R. Ventresca Miller,Alicia R. Ventresca Miller,William Timothy Treal Taylor,William Timothy Treal Taylor,Bryan K. Miller,Bryan K. Miller,Richard W. Hagan,Madeleine Bleasdale,Ashley Scott,Sumiya Gankhuyg,Abigail Ramsøe,Abigail Ramsøe,S. Uliziibayar,Christian Trachsel,Paolo Nanni,Jonas Grossmann,Ludovic Orlando,Ludovic Orlando,Mark Horton,Mark Horton,Philipp W. Stockhammer,Philipp W. Stockhammer,Erdene Myagmar,Nicole Boivin,Christina Warinner,Christina Warinner,Christina Warinner,Jessica Hendy,Jessica Hendy +29 more
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