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Interactions and network analysis of a rock art site in Morro do Chapéu, Bahia, Brazil

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posted on 2014-06-04, 12:51 authored by Grégoire van Havre, The connected past The connected pastThe connected past The connected past

We present a network analysis of human representations painted in a prehistoric rock shelter located in the municipality of Morro do Chapéu, in the state of Bahia, Brazil. This particular set of rock art was classified according to common attributes shared by all the figures. The network created from these criteria allows us to study the behaviour of specific patterned elements considered as salient identity markers.

The region of the Chapada Diamantina is located in the central part of the state of Bahia. Mostly above 1000 meters, it shows a rich vegetation in the middle of a semiarid zone. The municipality of Morro do Chapéu lies in the north, on a sandstone belt separating the two most important hydrographic basins of Bahia, São Francisco and Paraguaçu rivers.

In order to analyze the diversity of human representations, we developed a classification based on shared binary morphological and technical attributes. A 2-mode network was then mounted to
visualize the relations existing between all the elements and their variables. This method allowed us to identify clusters of similar figures and outliers, with original combinations of attributes.
Furthermore, we wanted to verify this method, still new in rock art studies, against another statistical test. MCA, or Multiple Correspondence Analysis, offered us a geometric analysis of the same data. It resulted in fairly similar results.

 

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