The parceling of land into real estate is more than a simple geometrical affair. Real estate is a historical product of interaction between human beings, political, legal and economic institutions, and the physical environment. And while many authors, from Jeremy Bentham to Hernando de Soto, have drawn attention to the ontological (metaphysical) aspect of property in general, no comprehensive analysis of landed property has been attempted. The paper presents such an analysis and shows how landed property differs from other types (...) of property in a way which implies a special role for political and economic philosophy of property rights in land. This is the Chinese translation of "The Metaphysics of Real Estate", Topoi, 20: 2 (September 2001), 161–172. (shrink)

The thesis that an analysis of property rights is essential to an adequate analysis of the state is a mainstay of political philosophy. The contours of the type of government a society has are shaped by the system regulating the property rights prevailing in that society. Views of this sort are widespread. They range from Locke to Nozick and encompass pretty much everything else in between. Defenders of this sort of view accord to property rights supreme importance. A state that (...) does not sufficiently respect property rights is likely to be a totalitarian state, and will also be likely to fail to respect rights of other sorts. (shrink)

We propose as a UCGIS research priority the topic of “Ontological Foundations for Geographic Information.” Under this umbrella we unify several interrelated research subfields, each of which deals with different perspectives on geospatial ontologies and their roles in geographic information science. While each of these subfields could be addressed separately, we believe it is important to address ontological research in a unitary, systematic fashion, embracing conceptual issues concerning what would be required to establish an exhaustive ontology of the geospatial domain, (...) issues relating to the choice of appropriate methods for formalizing ontologies, and considerations regarding the design of ontology-driven information systems. This integrated approach is necessary, because there is a strong dependency between the methods used to specify an ontology, and the conceptual richness, robustness and tractability of the ontology itself. Likewise, information system implementations are needed as testbeds of the usefulness of every aspect of an exhaustive ontology of the geospatial domain. None of the current UCGIS research priorities provides such an integrative perspective, and therefore the topic of “Ontological Foundations for Geographic Information Science” is unique. (shrink)

Two hundred and sixty-three subjects each gave examples for one of five geographic categories: geographic features, geographic objects, geographic concepts, something geographic, and something that could be portrayed on a map. The frequencies of various responses were significantly different, indicating that the basic ontological terms feature, object, etc., are not interchangeable but carry different meanings when combined with adjectives indicating geographic or mappable. For all of the test phrases involving geographic, responses were predominantly natural features such as mountain, river, lake, (...) ocean, hill. Artificial geographic features such as town and city were listed hardly at all for geographic categories, an outcome that contrasts sharply with the disciplinary self-understanding of academic geography. However, geographic artifacts and fiat objects, such as roads, cities, boundaries, countries, and states, were frequently listed by the subjects responding to the phrase something that could be portrayed on a map. In this paper, we present the results of these experiments in visual form, and provide interpretations and implications for further research. (shrink)

Information may be defined as the conceptual or communicable part of the content of mental acts. The content of mental acts includes sensory data as well as concepts, particular as well as general information. An information system is an external (non-mental) system designed to store such content. Information systems afford indirect transmission of content between people, some of whom may put information into the system and others who are among those who use the system. In order for communication to happen, (...) the conceptual systems of the originators and users of the information must be sufficiently similar. A formal conceptual framework that can provide the basis for exchange of information is termed an ontology. In its most fundamental form, ontology studies the most basic constituents of reality. Traditionally, ontology seeks to reflects structures that are independent of thought and cognition. The term ontology is used more broadly in artificial intelligence and software engineering, to refer to the conceptual basis for an information system. (shrink)

The objective of this research programme is to contribute to the establishment of the emerging science of Formal Ontology in Information Systems via a collaborative project involving researchers from a range of disciplines including philosophy, logic, computer science, linguistics, and the medical sciences. The re­searchers will work together on the construction of a unified formal ontology, which means: a general framework for the construction of ontological theories in specific domains. The framework will be constructed using the axiomatic-deductive method of modern (...) formal ontology. It will be tested via a series of applications relating to on-going work in Leipzig on medical taxonomies and data dictionaries in the context of clinical trials. This will lead to the production of a domain-specific ontology which is designed to serve as a basis for applications in the medical field. (shrink)

The shape of the Earth's surface, its topography, is a fundamental dimension of the environment, shaping or mediating many other environmental flows or functions. But there is a major divergence in the way that topography is conceptualized in different domains. Topographic cartographers, information scientists, geomorphologists and environmental modelers typically conceptualize topographic variability as a continuous field of elevations or as some discrete approximation to such a field. Pilots, explorers, anthropologists, ecologists, hikers, and archeologists, on the other hand, typically conceptualize this (...) same variability in terms of hills and valleys, mountains and plains, barrows and trenches, that is, as (special sorts of) objects, with locations, shapes, and often names of their own. In this chapter, we sketch an approach to bridging this fundamental gap in geographic information infrastructure. (shrink)

The purpose of this article is to reexamine the ontology of geopolitical boundaries so that they can be better represented in ontologies designed for the semantic web. Previous work on this subject...

The purpose of this paper is to argue states are not organizations, but rather the objective legal persons of international law. The ontological similarities and differences between states and orga...

This article intends to provide an overview on the philosophical and geographical background of geo-ontologies and to propose a geographical classification of these ontologies, in response to their increasing diffusion within the contemporary debate. Accordingly, the first two paragraphs are devoted to offer a short introduction to the ontological turn in philosophy and to the development of the ontology of geography, that is that part of the ontology mainly focused on geographic entities and their boundaries, spatial representation, meretopological relations and (...) location. As a second step, this preliminary analysis is taken to be a helpful device in showing some philosophical tools useful for geo-ontologies and in determining whether and what geographical sub-areas can be identified from non-professional geographers. Consequently, paragraphs three and four investigate the emerging of geo-ontologies from the spatial turn and their general aims. Part of this inquiry is dedicated to show some taxonomies derived from the domain of computer and information science and to underline the absence of a classification suitable for spreading geo-ontologies in the geographical debate. As it is, the fifth paragraph is concerned with a taxonomy for geo-ontologies grounded on some fundamental geographical distinctions. The basic idea is that such a taxonomy might best introduce geo-ontologies to the geographical debate that, in turn, might deeply influence the advancement of these ontologies in terms of conceptualizations and trace gradually the guidelines for a classification, in which the development of geo-ontologies would follow all the different sub-disciplines within the same geography. (shrink)