Groff's argument runs counter to the familiar anti-metaphysical habit. Social and political philosophy, she maintains, is not as metaphysically neutral as it may seem. Even the most deontological of theories connects up with an attendant set of philosophical commitments regarding what kinds of things exist, as a fundamental ontological matter, and what they are like. These are topics of interest not just to social and political philosophers, but to social scientists and to philosophers of social science as well. "Ruth Groff has broken new ground in demonstrating the connection between social and political thought and the ontology of causal powers. Her account of the structure of Humean thinking about agency is excellent. Especially significant is the role that she assigns to Kantianism in the analysis that she develops. She moves effortlessly between contemporary metaphysics, political theory, critical social theory, and the history of modern philosophy, offering trenchant insights along the way into the work of thinkers ranging from Hume himself to Mill, Adorno, and Martha Nussbaum, and into debates over agent causation and emergence. There is even a discussion, in the final chapter, of Spinoza. This is big-picture philosophy at its best: rigorous and exacting at the level of detail; original, compelling and systematic in the whole." - Stephen Mumford, Professor of Metaphysics and Dean of the Faculty of Arts, University of Nottingham

Ontological commitment implies that each theory is supposed to specify the type of entities that form its components. Representatives of a theory share an ontological commitment in relation to the objects they refer to. There are theories that admit the existence of universals while others do not. As there are different ways of speaking about universals it is necessary to decide what a universal term corresponds to. It is essential to have a criterion that enables us to decide which kinds of objects are allowed as references for the terms used. In this volume two different approaches are discussed: first, in cases where only extensional languages are accepted; second, when intensional elements are required to determine the meaning such terms as "Sachverhalt", intentional statements or representations. The ontological commitment associated with extensional theories exclusively admits the existence of physical objects, whereas intensional theses additionally include universal and abstract entities. The study of ontological commitment enables us to measure the ontological economy of theories. This serves as a basis for the choice of theory. The authors of this volume discuss relevant issues of both models and provide new solutions.

The Eighth International Baltic Conference on Databases and Information Systems took place on June 2–5 2008 in Tallinn, Estonia. This conference is continuing a series of successful bi-annual Baltic conferences on databases and information systems (IS). The aim is to provide a wide international forum for academics and practitioners in the field of databases and modern information systems for exchanging their achievements in this area. The original research results presented in Databases and Information Systems V mostly belong to novel fields of IS and database research such as database technology and the semantic web, ontology-based IS, IS and AI technologies and IS integration. The contribution of Dr. Jari PalomÄki showed how different ontological commitments affect the way we are modeling the world when creating an information system. As semantic technologies have been gaining more attention recently, a special session on semantic interoperability of IS was organized. The invited talks from each Baltic State gave a good insight how semantic interoperability initiatives are developing in each of the Baltic States and how they relate to the European semantic interoperability framework.

Multiple artworks are works that can have multiple 'instances' which can play a particular kind of role in the appreciation of those works: for example, there can be multiple copies of a novel, or multiple performances of a musical work. An Ontology of Multiple Artworks is the first book-length critical analytic treatment of the metaphysical issues relating to 'multiple' artworks for over three decades. David Davies takes various considerations to which authors have appealed in arguing for ontological understandings of works in particular multiple art-forms as putative explananda, arguing that an adequate ontology of multiple artworks should be reflectively accountable to these. After clarifying what 'multiplicity' in the arts amounts to, Davies critically assesses the 'Platonist' idea that multiple artworks must be abstract or generic entities of some sort ('types') that exist independently of our creative and appreciative practices. The evolution of this idea is traced, and its ability to deal with the different explananda in play in the literature is gauged. The methodological constraints that should govern this kind of inquiry are also assessed. On the basis of these investigations, it is concluded that Platonism about multiple artworks is seriously compromised. Different non-Platonist options are then considered, and it is argued that the account that best explains the weighted explananda is the 'Wollheimian type' theory, according to which multiple artworks are performances essentially embedded in artistic practices. Finally, sceptical challenges to the very idea that there are such things as multiple artworks are considered.

Researchers in areas such as artificial intelligence, formal and computational linguistics, biomedical informatics, conceptual modeling, knowledge engineering and information retrieval have come to realize that a solid foundation for their research calls for serious work in ontology, understood as a general theory of the types of entities and relations that make up their respective domains of inquiry. In all these areas, attention is now being focused on the content of information rather than on just the formats and languages used to represent information. The clearest example of this development is provided by the many initiatives growing up around the project of the Semantic Web. And, as the need for integrating research in these different fields arises, so does the realization that strong principles for building well-founded ontologies might provide significant advantages over ad hoc, case-based solutions. The tools of formal ontology address precisely these needs, but a real effort is required in order to apply such philosophical tools to the domain of information systems. ontological questions which call for further philosophical investigations. The purpose of FOIS is to provide a forum for genuine interdisciplinary exchange in the spirit of a unified effort towards solving the problems of ontology, with an eye to both theoretical issues and concrete applications. This book contains a wide range of areas, all of which are important to the development of formal ontologies.

Challenging the assumption that the capitalist transformation includes a radical break with the past, this edited volume traces how historically older forms of social inequality are transformed but persist in the present to shape the social structure of contemporary societies in the global South. Each social collective comprises an interpretation of itself – including the meaning of life, the concept of a human person, and the notion of a collective. This volume studies the interpretation that various social collectives have of themselves. This interpretation is referred to as social ontology. All chapters of the edited volume focus on the relation between social ontology and structures of inequality. They argue that each society comprises several historical layers of social ontology that correspond to layers of inequality, which are referred to as sociocultures. Thereby, the volume explains why and how structures of inequality differ between contemporary collectives in the global South, even though all of them seem to have similar structures, institutions, and economies. The volume is aimed at academics, students and the interested public looking for a novel theorization of social inequality pertaining to social collectives in the global South.