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Three prehistoric sites in the Upper Mun River Valley of north-eastern Thailand have provided a detailed chronological succession comprising 12 occupation phases. These represent occupation spanning 2300 years, from initial settlement in the Neolithic (seventeenth century BC) through to the Iron Age, ending in the seventh century AD with the foundation of early states. The precise chronology in place in the Upper Mun River Valley makes it possible to examine changes in social organisation, technology, agriculture and demography against a background of climatic change. In this area the evidence for subsistence has been traditionally drawn from the biological remains recovered from occupation and mortuary contexts. This paper presents the results of carbon isotope analysis to identify and explain changes in subsistence over time and between sites, before comparing the results with two sites of the Sakon Nakhon Basin, located 230km to the north-east, to explore the possibility of regional differences.
Aliases play an important role in online environments by facilitating anonymity, but also can be used to hide the identity of cybercriminals. Previous studies have investigated this alias matching problem in an attempt to identify whether two aliases are shared by an author, which can assist with identifying users. Those studies create their training data by randomly splitting the documents associated with an alias into two sub-aliases. Models have been built that can regularly achieve over 90% accuracy for recovering the linkage between these ‘random sub-aliases’. In this paper, random sub-alias generation is shown to enable these high accuracies, and thus does not adequately model the real-world problem. In contrast, creating sub-aliases using topic-based splitting drastically reduces the accuracy of all authorship methods tested. We then present a methodology that can be performed on non-topic controlled datasets, to produce topic-based sub-aliases that are more difficult to match. Finally, we present an experimental comparison between many authorship methods to see which methods better match aliases under these conditions, finding that local n-gram methods perform better than others.
Unsupervised Authorship Analysis (UAA) aims to cluster documents by authorship without knowing the authorship of any documents. An important factor in UAA is the method for calculating the distance between documents. This choice of the authorship distance method is considered more critical to the end result than the choice of cluster analysis algorithm. One method for measuring the correlation between a distance metric and a labelling (such as class values or clusters) is the Silhouette Coefficient (SC). The SC can be leveraged by measuring the correlation between the authorship distance method and the true authorship, evaluating the quality of the distance method. However, we show that the SC can be severely affected by outliers. To address this issue, we introduce the Positive Silhouette Coefficient, given as the proportion of instances with a positive SC value. This metric is not easily altered by outliers and produces a more robust metric. A large number of authorship distance methods are then compared using the PSC, and the findings are presented. This research provides an insight into the efficacy of methods for UAA and presents a framework for testing authorship distance methods.
Authorship Analysis aims to extract information about the authorship of documents from features within those documents. Typically, this is performed as a classification task with the aim of identifying the author of a document, given a set of documents of known authorship. Alternatively, unsupervised methods have been developed primarily as visualisation tools to assist the manual discovery of clusters of authorship within a corpus by analysts. However, there is a need in many fields for more sophisticated unsupervised methods to automate the discovery, profiling and organisation of related information through clustering of documents by authorship. An automated and unsupervised methodology for clustering documents by authorship is proposed in this paper. The methodology is named NUANCE, for n-gram Unsupervised Automated Natural Cluster Ensemble. Testing indicates that the derived clusters have a strong correlation to the true authorship of unseen documents.
Authorship attribution methods aim to determine the author of a document, by using information gathered from a set of documents with known authors. One method of performing this task is to create profiles containing distinctive features known to be used by each author. In this paper, a new method of creating an author or document profile is presented that detects features considered distinctive, compared to normal language usage. This recentreing approach creates more accurate profiles than previous methods, as demonstrated empirically using a known corpus of authorship problems. This method, named recentred local profiles, determines authorship accurately using a simple ‘best matching author’ approach to classification, compared to other methods in the literature. The proposed method is shown to be more stable than related methods as parameter values change. Using a weighted voting scheme, recentred local profiles is shown to outperform other methods in authorship attribution, with an overall accuracy of 69.9% on the ad-hoc authorship attribution competition corpus, representing a significant improvement over related methods.
Through the study of civil society, the evolution of social relations, and the breakdown of social order, Order and Anarchy re-examines the role of violence in human social evolution. Drawing on anthropology, political science, and evolutionary theory, it offers a novel approach to understanding stability and instability in human society. Robert Layton provides a radical critique of current concepts of civil society, arguing that rational action is characteristic of all human societies and not unique to post-Enlightenment Europe. Case studies range from ephemeral African gold rush communities and the night club scene in Britain to stable hunter-gatherer and peasant cultures. The dynamics of recent civil wars in the former Yugoslavia, Chad, Somalia and Indonesia are compared to war in small-scale tribal societies, arguing that recent claims for the evolutionary value of violence have misunderstood the complexity of human strategies and the social environments in which they are played out.
This article develops a novel method for assessing the cultural context of rock art, and applies it to the rock art of the Upper Palaeolithic of France and Spain. The article relies on a generative approach, assuming that artists have the potential to choose which motifs to select from the repertoire or vocabulary of their artistic system, but that appropriate choices at any place are guided by the location of that site within the culturally-mediated geography of the region. Ethnographic studies of rock art depicting animal species produced in the contexts of totemism, shamanism and everyday life are used as reference points in an analytical framework, which is then applied to a number of ancient traditions.
Chapter 2 reconsiders the question posed by Adam Ferguson: is there a contest between commitment to social relationships and selfishness, or is it in the individual's interest to sustain social relationships? The chapter gives some examples that show how people strive for order as much as for disorder. It argues that success or failure in sustaining social relations must be explained by the ‘ecology’ of social interaction. What are the benefits to the individual of investing in social relationships? Different social strategies are most likely to succeed in different social environments and, if the social context deteriorates (as it did with the collapse of socialism in Yugoslavia), people may respond by narrowing the scope of their social relationships. The chapter therefore also asks to what extent ecological approaches to biological evolution can provide appropriate models for explaining social process. Chapter 3 will use this framework as a basis for analysing the breakdown of social order.
Thomas Hobbes envisaged the natural human condition as one of random disorder, in which every individual sought their self-preservation by trying to control others (Hobbes 1970: 65). People would only be willing to work for the general good if they could be confident anyone who cheated was punished. Just as Garrett Hardin supposed ‘freedom in a commons brings ruin for all’ through over-exploitation (Hardin 1968: 1244), so Hobbes imagined that people living in the ‘natural human condition’ would readily surrender sufficient personal freedom to a chosen sovereign to enable him to enforce peace.
This chapter addresses two questions: what turns civil society against the state? What causes co-operation and reciprocity within civil society to give way to competition and conflict? The analysis is based on a combination of two theoretical approaches, the social theory of Pierre Bourdieu and Anthony Giddens, and the applications of game theory developed by behavioural ecologists. Bourdieu and Giddens, whose ideas are mentioned in chapter 2, were critical of two preceding schools of thought in social science. They argued for a synthesis that would acknowledge the strengths of both, but overcome the weaknesses of each school. On one hand there was a sociological tradition that considered individuals to be embedded in a social system, not free agents (classically represented in anthropology by Durkheim 1938 and Radcliffe-Brown 1952). According to this school, we are born into a society that allocates us to pre-determined social roles, so that everyone plays their part in sustaining the social order. Bourdieu and Giddens objected to this school's tendency to imply that social systems were inherently stable, and that individuals' interests were subordinated to the needs of society (Bourdieu 1977: 5, Giddens 1984: 25). Such ‘structural’ analysis also tended to render variation in individual performances as deviations from an unwritten score (the roles that individuals play on behalf of society), but Bourdieu argued that these roles are in fact sociological constructs built by the analyst. Both Bourdieu and Giddens argued that social order emerges spontaneously through interaction.
As chapter 3 has shown, there have been many violent conflicts in Europe, Africa and Asia during the 1990s. Society seems increasingly vulnerable to apparently mindless acts of destruction. Some authors have concluded that humans are genetically disposed to violence and that culture provides an inadequate safeguard. Robert Kaplan argues that where there is mass poverty, people find liberation in violence. ‘Only when people attain a certain economic, educational and cultural standard is this trait tranquilized’ (Kaplan 1994: 73). Richard Wrangham and Dale Peterson argue there is evidence to suggest ‘that chimpanzee-like violence preceded and paved the way for human war, making modern humans the dazed survivors of a continuous, 5-million-year habit of lethal aggression’ (1996: 63). Chapter 4 therefore looks at evidence for the evolutionary significance of human warfare. It argues that warfare and peacemaking are equally important in human social evolution.
WAR IN SMALL-SCALE SOCIETIES
Paul Sillitoe defines war as ‘a relationship of mutual hostility between two groups where both try by armed force to secure some gain at the other's expense’ (Sillitoe 1978: 252; cf. Ember and Ember 1997: 3). The frequency of warfare among human populations has led some to argue that warfare is the product of an inherent human disposition, a genetically determined drive to aggression. During the 1960s, writers such as Robert Ardrey (1967) and Konrad Lorenz (1966 [1963]) popularised the idea that warfare was linked to ‘instinctive’ defence of territories, and therefore part of human nature.
Order and anarchy grew out of several of my research interests. One originated in my doctoral research on social change in a cluster of French villages close to the Swiss border (see Layton 2000). I conducted several periods of fieldwork between 1969 and 1995, and relied on local archives to reconstruct continuity and change over a period extending back to the ancien régime that predated the French Revolution of 1789. The overwhelming impression I gained was that village life had remained remarkably orderly through a period that encompassed the 1789 Revolution, the agricultural revolution of the eighteenth and nineteenth centuries (associated with the turmoil of the enclosures in England), military occupations in the Franco-Prussian and Second World Wars, and the post-war mechanisation of agriculture. Knowing something about English village life, I was also impressed by the comparative vitality of local democracy and the freedom ‘my’ villages had to manage common pasture and forest. While I was analysing this material, however, state socialism in Eastern Europe was collapsing; sometimes in a more or less orderly fashion, elsewhere disintegrating into civil war. Political thinkers in both Eastern and Western Europe saw the creation of ‘civil society’ in the Eastern bloc as the key to future political stability, and believed this would be facilitated by the development of a market economy.
The commodification of culture poses questions concerning value, ownership and ethics both in terms of those marketing culture and, more specifically, with regard to the role of anthropologists and archaeologists in facilitating or challenging the process. Here we look at ethical issues that arise in two contexts: where there is tension between the status of artefacts as commodities and as cultural property, and where rights to cultural property are contested.
Culture consists of learned patterns of thought and behaviour that are characteristic of a particular community. Culture includes beliefs, values, language, political organisation and economic activity; also technology, art and material culture. A commodity is an item that can be freely bought and sold through the market economy. In a narrow sense, commodities are raw materials or primary agricultural products, but the term can be extended to any useful or valuable thing that has a price, payment of which transfers ownership from the seller to the buyer. All commodities (even raw materials) are cultural artefacts in the sense that demand for them is culturally constructed. The market economy is itself a cultural phenomenon.
Although culture is shared, anthropologists no longer think of it as a ‘collective consciousness’ (Durkheim 1915) but rather follow Bourdieu's (1977) concept of habitus, which stresses the interaction between ideas and their material expression. When Bourdieu attempted to discover the structure of culture among the Kabyle people of Algeria, he found each individual carried a slightly different mental model. Bourdieu termed this mental schema the individual's habitus.