A GENEALOGY OF CORRESPONDENCE ANALYSIS

Over the past half a century correspondence analysis has grown from a little known statistical technique designed to graphically depict the association structure of categorical variables that form a contingency table to a very popular tool used in a wide variety of disciplines. Despite this growth, correspondence analysis remains relatively unknown in some parts of the world, including the Australasian statistical community. This paper provides a non‐technical, bibliographic exploration of correspondence analysis. We take a step back to view the development of this statistical technique and provide a brief account of its genealogy with a selection of over 270 key publications that have contributed to its growth. We also look at its maturity over the decades.     

Brutality of Jihadist terrorism. A contest theory perspective and empirical evidence in the period 2002–2010

We interpret the emergence of Jihadist terrorism in the light of contest theory. Al Qaeda may be portrayed as a contest organizer, providing a ‘prize’ to the best terrorist group. Each group maximizes its probability of winning by launching attacks more destructive than previous ones perpetrated by competing groups. This hypothesis is confirmed by the empirical analysis which shows that the number of victims of terrorist attacks increases compared to number of victims of previous attacks in the same country. An upward trend in terrorist brutality is the outcome of competition between groups. Results also show that Al Qaeda-style terrorism is associated with poverty and underprivileged socio-economic conditions.     

Open Cosmopolitanism and the World Social Forum: Global Resistance,Emancipation, and the Activists’ Vision of a Better World

The World Social Forum (WSF) is the world’s largest activist network to date. Its global, regional, national, and thematic events have gathered since 2001 millions of participants and thousands of civil society and social movement organisations. Its cosmopolitan vision is built on resistance to the planetary domination by neo-liberal globalisation. This paper unpacks WSF’s cosmopolitan project and reflects on its vision of emancipated individuals, convivial communities, and a just planetary society in harmony with the environment. In its open organisational space, WSF’s cosmopolitan project develops while in the process of political action rather than prior to that. At the same time, power dynamics, ideological cleavages, and pragmatic concerns about organisation and strategy challenge WSF’s ability to pursue its goals. However, it is these internal tensions that make WSF’s cosmopolitan project both more difficult to achieve and more realistic than claims of universal unity among all its participants.     

A quantile regression perspective on external preference mapping

AStA Advances in Statistical Analysis - External preference mapping is widely used in marketing and R&D divisions to understand the consumer behaviour. The most common preference map is...     

Simple and multiple correspondence analysis for ordinal-scale variables using orthogonal polynomials

Correspondence analysis (CA) has gained a reputation for being a very useful statistical technique for determining the nature of association between two or more categorical variables. For simple and multiple CA, the singular value decomposition (SVD) is the primary tool used and allows the user to construct a low-dimensional space to visualize this association. As an alternative to SVD, one may consider the bivariate moment decomposition (BMD), a method of decomposition that involves using orthogonal polynomials to reflect the structure of ordered categorical responses. When the features of BMD are combined with SVD, a hybrid decomposition (HD) is formed. The aim of this paper is to show the applicability of HD when performing simple and multiple CA.     

Analyzing disaster risks and plans: An avian flu example

Narrative approaches to analyzing risks seek to identify the variables critical to creating and controlling a risk, then to instantiate them in terms of coherent themes (e.g., organizational failure, strategic surprise). Computational approaches to analyzing risks seek to identify the same critical variables, then to instantiate them in terms of their probability. Disaster risk analysis faces complex, novel processes that strain the capabilities of both approaches. We propose an approach that integrates elements of each, relying on what we call structured scenarios and computable models. It is illustrated by framing the analysis of plans for a possible avian flu pandemic.     

Labour Market and Decentralized Decision-making: An Institutional Approach

The persistent failure in the labour market is due to uncertainty and asymmetric information, and relies on a reconsideration of the bargaining process. This process is not generated by individual action but rather by the behaviour of social groups and institutions in which State intervention can immprove the efficiency in matching demand and supply. In this framework we will discuss the ways by which institutional decentralization can be implemented in a labour market characterized by deep regional differences and by long-term unemployment persistence as in Italy. The main conclusion is that this policy option better fits the active labour policies. In fact the actual aim of such supply-side policies is to reduce the regional and skill mismatches and therefore it needs a substantial involvement of local public agencies.     

Gender role identity in a sample of Italian male homosexuals

Gender role is a multifactorial concept, as gender-related attitudes, behaviors, and personality are partially autonomous. The aim of the study was to evaluate the prevalent gender role identity in a sample of male homosexuals. One hundred male homosexuals and 50 male heterosexuals matched for age and sex, have been assessed with the Italian version of the Bem Sex-Role Inventory (BSRI; Bem, 1974). Statistically significant differences have been found between the two groups at the dimensions "Masculine" (z = 1.963; p = 0.001) and "Androgyny" (z = 2.367; p < 0.0001). The results obtained from the present study tend to confirm that homosexuals view themselves as adrogynous individuals, sharing both features of masculine and feminine gender roles.     

Public investment and growth: Lessons learned from 60-years experience in Southern Italy

This article analyses the contribution of public investment to economic growth in Southern Italy in the second half of the twentieth century (1951–2011). The Bai–Perron tests suggest that economic growth followed three distinct regimes: accelerated growth in the years 1951–1973 (average growth rate 5.3%); low growth in the period 1974–1995 (average growth rate 1.6%); zero growth on average after 1995. Using cointegration analysis, we find a positive effect of public investment on per unit of labour output of the Mezzogiorno in the whole period, 1951–2011. However, the estimates of the model show statistically significant parameters of public investment in the first regime, but not in the second regime, when economic growth is sustained by business investment and technical change. The last phase of growth sees the negative influence of the social and institutional environment on the functioning of the economy. The different impact of public investment on growth over time is ascribed to changes in the quality of institutions.