Geographic information reflects ontological world views, just like any linguistic utterance. However, in comparison with spoken language, all kinds of digital information is affected by the problem of reference to an even larger extent, because of the loss of the context of speech. How can the phenomena underlying digital information be referred to in an inter-subjective way? The problem is not that machines cannot communicate, but that humans frequently misunderstand each other when communicating via machines. This (...) book puts forward a proposal about how semantic reference can be reproduced based on the operations necessary to generate a dataset. These include cognitive constructions as well as perceptual operations, i. e., operations of the human attentional apparatus. Perceptual operations allow one to share information by focusing human attention on aeGestaltsAE in the perceived space around the body. Gestalt mechanisms allow observers to make predications, i. e., to relate foci of attention. The author proposes a kind of aepractical constructivismAE guided by a formal language.The idea is to describe data aebottom-upAE in order to reconstruct the observation and abstraction process, instead of presuming abstract ontological concepts. This approach is demonstrated by reconstructing the concept of a road network, which underlies an important kind of geographic data. (shrink)

Population counts and longitude and latitude coordinates were estimated for the 50 largest cities in the United States by computational linguistic techniques and by human participants. The mathematical technique Latent Semantic Analysis applied to newspaper texts produced similarity ratings between the 50 cities that allowed for a multidimensional scaling (MDS) of these cities. MDS coordinates correlated with the actual longitude and latitude of these cities, showing that cities that are located together share similar semantic contexts. This finding was replicated using (...) a first‐order co‐occurrence algorithm. The computational estimates of geographical location as well as population were akin to human estimates. These findings show that language encodes geographical information that language users in turn may use in their understanding of language and the world. (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)

This paper presents an axiomatic formalization of a theory of top-level relations between three categories of entities: individuals, universals, and collections. We deal with a variety of relations between entities in these categories, including the sub-universal relation among universals and the parthood relation among individuals, as well as cross-categorial relations such as instantiation and membership. We show that an adequate understanding of the formal properties of such relations – in particular their behavior with respect to time – is critical for (...) geographic information processing. The axiomatic theory is developed using Isabelle, a computational system for implementing logical formalisms. All proofs are computer verified and the computational representation of the theory is available online. (shrink)

The next generation of Geographic Information Systems is anticipated to automate some of the reasoning required for spatial analysis. An important step in the development of such systems is to gain a better understanding and corresponding modeling practice of when to apply arithmetic operations to quantities. The concept of extensivity plays an essential role in determining when quantities can be aggregated by summing them, and when this is not possible. This is of particular importance to geographic (...) class='Hi'>information systems, which serve to quantify phenomena across space and time. However, currently, multiple contrasting definitions of extensivity exist, and none of these suffice for handling the different practical cases occurring in geographic information. As a result, analysts predominantly rely on intuition and ad hoc reasoning to determine whether two quantities are additive. In this paper, we present a novel approach to formalizing the concept of extensivity. Though our notion as such is not restricted to quantifications occurring within geographic information, it is particularly useful for this purpose. Following the idea of spatio-temporal controls by Sinton, we define extensivity as a property of measurements of quantities with respect to a controlling quantity, such that a sum of the latter implies a sum of the former. In our algebraic definition of amounts and other quantities, we do away with some of the constraints that limit the usability of older approaches. By treating extensivity as a relation between amounts and other types of quantities, our definition offers the flexibility to relate a quantity to many domains of interest. We show how this new notion of extensivity can be used to classify the kinds of amounts in various examples of geographic information. (shrink)

The body of information on the Internet is becoming increasingly geographical. This is both due to the expansion of established categories of geographic information and to the simultaneous enrichment of other types of information through geographic identifiers. As this repository of geographic information expands, it is also a key site for multiple processes of commodification transforming informational resources into market goods. Understanding the dynamics driving the integration of geographic information into the (...) digital economy requires a comprehensive political economic analysis. A key component of this analysis is to explain the logics of creation and allocation of economic value from geographic information on the Internet. Addressing this need, in the present article I deploy the property regimes schema developed by Schlager and Ostrom and expand it to elucidate the differentiated commodification processes of geographic information on the Internet. Property regimes are arrangements that define rules, distribute rights, and delineate roles with respect to particular goods. These arrangements are enabled by elements such as legal frameworks, jurisdictions, type of information, and technologies of access. In this article, I explore how the legal frameworks regulating traditional categories of geographic information have been destabilized in the process of technological innovation, leading to the creation of new informational goods along with their respective property regimes, and rearticulating legal, economic, and sociotechnical relations. To illustrate this, I analyze the case of Google Street View images through their property regimes in various jurisdictions. (shrink)

With respect to the right of privacy, some of the most difficult concerns arise from the map, and especially the modern, computer-generated map. Maps support a view in which the local--and the private--are unimportant, as they represent the world in ways that make places seem fundamentally alike. By geocoding he location of people, places, and events, maps offer a universal set of identifiers, one much more difficult to regulate than traditional identifiers like the social security number. At the same time, (...) they support the development of a system of geodemographic profiling in a way that creates "digital individuals" over whom most people have little control. And when these data are placed on a map, the problems are exacerbated, just to the extent that the reading of maps is a highly culturally determined practice; different people often interpret the same map in very different ways. This collection of problems suggests that in the context of a rapidly diffusing commercial mapping system, the traditional conception of the right to privacy is under attack, and that in the process that right is being redefined. (shrink)

Since it is only five years since the publication of our paper, "Geographical categories: An ontological investigation" (Smith and Mark 2001), it seems somewhat strange to be making retrospective comments on the piece. Nevertheless, the field is moving quickly, and much has happened since the article appeared. A large number of papers have already cited the work, which suggests that there is a seam here that people find worthy of being mined. In this short essay, we first review the paper (...) and attempt to assess its significance from the perspective of our current work. We then put the paper in the context of our individual and joint works, which led up to it, and summarize our research trajectories since the paper appeared, pointing out what some of this reveals about spatial ontology in general. We conclude with some remarks on the future of ontological research in geographical information science. (shrink)

Ontology has been proposed as a solution to the 'Tower of Babel' problem that threatens the semantic interoperability of information systems constructed independently for the same domain. In information systems research and applications, ontologies are often implemented by formalizing the meanings of words from natural languages. However, words in different natural languages sometimes subdivide the same domain of reality in terms of different conceptual categories. If the words and their associated concepts in two natural languages, or even in (...) two terminological traditions within the same language, do not have common referents in the real world, an ontology based on word meanings will inherit the 'Tower of Babel' problem from the languages involved, rather than solve it. In this paper we present evidence from a preliminary comparison of landscape terms in English with those in the Yindjibarndi language of northwestern Australia demonstrating that this problem is not just hypothetical. Some possible solutions are suggested. (shrink)

Ontology has been proposed as a solution to the 'Tower of Babel' problem that threatens the semantic interoperability of information systems constructed independently for the same domain. In information systems research and applications, ontologies are often implemented by formalizing the meanings of words from natural languages. However, words in different natural languages sometimes subdivide the same domain of reality in terms of different conceptual categories. If the words and their associated concepts in two natural languages, or even in (...) two terminological traditions within the same language, do not have common referents in the real world, an ontology based on word meanings will inherit the 'Tower of Babel' problem from the languages involved, rather than solve it. In this paper we present evidence from a preliminary comparison of landscape terms in English with those in the Yindjibarndi language of northwestern Australia demonstrating that this problem is not just hypothetical. Some possible solutions are suggested. (shrink)

This book constitutes the refereed proceedings of the International Conference on Spatial Information Theory, COSIT 2005, held in Elliottville, NY, USA in September 2005. The 30 revised full papers presented were carefully reviewed and selected from 82 submissions. The papers are organized in topical sections on vagueness, uncertainty, and gradation; paths and routes; ontologies and semantics; ontologies and spatial relations; spatial reasoning: cognitive maps and spatial reasoning; time, change, and dynamics; landmarks and navigation; geographic information, and spatial (...) behaviour. (shrink)

Cognitive categories in the geographic realm appear to manifest certain special features as contrasted with categories for objects at surveyable scales. We have argued that these features reflect specific ontological characteristics of geographic objects. This paper presents hypotheses as to the nature of the features mentioned, reviews previous empirical work on geographic categories, and presents the results of pilot experiments that used English-speaking subjects to test our hypotheses. Our experiments show geographic categories to be similar to (...) their non-geographic counterparts in the ways in which they generate instances of different relative frequencies at different levels. Other tests, however, provide preliminary evidence for the existence of important differences in subjects’ categorizations of geographic and non-geographic objects, and suggest further experimental work especially with regard to the role in cognitive categorization of different types of object-boundaries at different scales. (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)

Over the past decade or so a number of historians of science and historical geographers, alert to the situated nature of scientific knowledge production and reception and to the migratory patterns of science on the move, have called for more explicit treatment of the geographies of past scientific knowledge. Closely linked to work in the sociology of scientific knowledge and science studies and connected with a heightened interest in spatiality evident across the humanities and social sciences this 'spatial turn ' (...) has informed a wide-ranging body of work on the history of science. This discussion essay revisits some of the theoretical props supporting this turn to space and provides a number of worked examples from the history of the life sciences that demonstrate the different ways in which the spaces of science have been comprehended. (shrink)

An ontology of geographic kinds is designed to yield a better understanding of the structure of the geographic world, and to support the development of geographic information systems that are conceptually sound. This paper first demonstrates that geographical objects and kinds are not just larger versions of the everyday objects and kinds previously studied in cognitive science. Geographic objects are not merely located in space, as are the manipulable objects of table-top space. Rather, they are (...) tied intrinsically to space, and this means that their spatial boundaries are in many cases the most salient features for categorization. The ontology presented here will accordingly be based on topology (the theory of boundary, contact and separation) and on mereology (the theory of extended wholes and parts). Geographic reality comprehends mesoscopic entities, many of which are best viewed as shadows cast onto the spatial plane by human reasoning and language. Because of this, geographic categories are much more likely to show cultural differences in category definitions than are the manipulable objects of table-top space. (shrink)

Spaces of Geographical Thought examines key ideas – like space and place - which inform the geographic imagination. The text: discusses the core conceptual vocabulary of human geography: agency: structure; state: society; culture: economy; space: place; black: white; man: woman; nature: culture; local: global; and time: space; explains the significance of these binaries in the constitution of geographic thought; and shows how many of these binaries have been interrogated and re-imagined in more recent geographical thinking. A consideration of (...) these binaries will define the concepts and situate students in the most current geographical arguments and debates. The text will be required reading for all modules on the philosophy of geography and on geographical theory. (shrink)

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)

BackgroundDescriptive studies examining publication rates and citation counts demonstrate a geographic skew toward high-income countries (HIC), and research from low- or middle-income countries (LMICs) is generally underrepresented. This has been suggested to be due in part to reviewers’ and editors’ preference toward HIC sources; however, in the absence of controlled studies, it is impossible to assert whether there is bias or whether variations in the quality or relevance of the articles being reviewed explains the geographic divide. This study (...) synthesizes the evidence from randomized and controlled studies that explore geographic bias in the peer review process.MethodsA systematic review was conducted to identify research studies that explicitly explore the role of geographic bias in the assessment of the quality of research articles. Only randomized and controlled studies were included in the review. Five databases were searched to locate relevant articles. A narrative synthesis of included articles was performed to identify common findings.ResultsThe systematic literature search yielded 3501 titles from which 12 full texts were reviewed, and a further eight were identified through searching reference lists of the full texts. Of these articles, only three were randomized and controlled studies that examined variants of geographic bias. One study found that abstracts attributed to HIC sources elicited a higher review score regarding relevance of the research and likelihood to recommend the research to a colleague, than did abstracts attributed to LIC sources. Another study found that the predicted odds of acceptance for a submission to a computer science conference were statistically significantly higher for submissions from a “Top University.” Two of the studies showed the presence of geographic bias between articles from “high” or “low” prestige institutions.ConclusionsTwo of the three included studies identified that geographic bias in some form was impacting on peer review; however, further robust, experimental evidence is needed to adequately inform practice surrounding this topic. Reviewers and researchers should nonetheless be aware of whether author and institutional characteristics are interfering in their judgement of research. (shrink)

Geographic definitions of constituency—the set of voters eligible to vote for a representative—have been criticized by theorists and reformers as undermining democratic values. I argue, in response, that there is no categorical (or even generally applicable) reason sounding in political equality to reject geographic districts. Geographic districting systems are typically flexible enough that, when properly designed, and matched with an appropriate electoral system, they can satisfy the requirements of political equality. More generally, I argue that it is (...) a mistake to evaluate the egalitarian character of constituency definitions in isolation from the political decision-making process as a whole. While it is conceptually important that we can detach constituency definition from other features of electoral systems, when it comes to normative and evaluative judgment, we ought to judge holistically. When we do so, we will rarely find general reasons to prefer one type of constituency definition to another. Geographic districts may offer benefits of logistical convenience and information circulation, even given the existence of advanced information technology. The best reason to reject geographic districts is their liability to anti-democratic abuse. Their defensibility in any given polity thus depends on how feasible it is to protect against such abuses while retaining a geographic districting system. (shrink)

Designed to be a high-level, approachable resource for engineers who need further insight into spatial temporal information systems from an ontological perspective, Spatial Temporal Information Systems: An Ontological Approach using STK® explains the dynamics of objects interaction from signal analysis to trajectory design, spatial modeling, and other spatial analytics by using STK®, which is a general-purpose modeling and analysis application for any type of space, defense, or intelligence system. Building a foundation to begin the study of spatial temporal (...) information systems, the book details a form of analysis that is a powerful tool for modeling, engineering, and operations of space, cyberspace, satellites, missile defense, and electronic systems. It discusses the many applications of space technologies by using a mission-proven software for timely and cost-effective development that serves public interests in civil, commercial, academic, national, and international space communities. Written for readers with a background in physics or engineering, the book is also designed for the beginning analyst sitting behind a desk who needs more information on STK. Upon reading this book, STK new users and power users will not only understand what the tools are, but also how the software can be used to make their job easier. In addition, satellite operators and analysts benefit from the ability to utilize a variety of propagators satellite applications. Analytics, semi-analytic and numerical integrators are discussed, including Keplerian orbital elements and full numerical integration of STK’s High Precision Orbit Propagation or simplified as a two-body analysis. This tool, as well as this book, will bring breadth and depth to the understanding of systems dynamics and the ontology of objects in relationship to other objects and vehicles including central bodies. (shrink)

Geographical Information Systems (GIS) – either as “standard” GIS or custom made Historical GIS (HGIS) – have become quite popular in some historical sub-disciplines, such as Economic and Social History or Historical Geography. “Mainstream” history, however, seems to be rather unaffected by this trend. More generally speaking: Why is it that computer applications in general have failed to make much headway in history departments, despite the first steps being undertaken a good forty years ago? With the “spatial turn” in (...) full swing in the humanities, and many historians dealing with spatial and geographical questions, one would think GIS would be welcomed with open arms. Yet there seems to be no general anticipation by historians of employing GIS as a research tool. As mentioned, HGIS are popular chiefly among Historical Geographers and Social and Economic Historians. The latter disciplines seem to be predestined to use such software through the widespread quantitative methodology these disciplines have employed traditionally. Other historical sub-disciplines, such as Ancient History, are also very open to this emerging technology since the scarcity of written sources in this field can be mitigated by inferences made from an HGIS that has archaeological data stored in it, for example. In most of Modern History, however, the use of GIS is rarely seen. The intellectual benefit that a GIS may bring about seems not be apparent to scholars from this sub-discipline (and others). This book wants to investigate and discuss this controversy. Why does the wider historian community not embrace GIS more readily? While one cannot deny that the methodologies linked with a GIS follow geographical paradigms rather than historical ones, the potential of GIS as a 'killer application' for digital historical scholarship should be obvious. This book brings together authors from Geography and History to discuss the value of GIS for historical research. The focus, however, will not be on the "how", but on the "why" of GIS in history. (shrink)

Information can be conceived as being composed of two complementary components: novelty and confirmation. Whenever either of the two is zero, information is zero. Genetic information, too, requires both novelty and confirmation. Evolution can be seen as the history of diversification. Selection alone reduces diversity. Recessivity appears to serve as a mechanism to protect diversity against selection. So does the geographical and behavioral 'separation' of species. Both recessivity and separation can be seen as 'error-friendly', a broader concept (...) that is supportive of diversity, learning and further evolution. This concept should also be obeyed in technological applications. (shrink)

Since geography was one of the accepted branches of Ionian Ίστορíη, it is not surprising that geographical description and discussion should play so large a part in the work of Herodotus. Nor is it surprising that, since he covered so much ground, he should occasionally borrow information from his predecessors. Apart from particular passages where comparison with the fragments of Hecataeus shows that he borrowed from this author's Periegesis, there are numerous others which, although strictly relevant fragments are lacking, (...) by their style and manner betray the influence of Hecataeus. The so-called ΛιβυκῸσ λΌγος for example, in Book IV is full of the conventional formulae familiar to anyone who has studied the fragments; consequently Jacoby is prepared to say that it provides even more valuable material for the method and style of Hecataeus than the treatment of Egypt in Book II, where more specific evidence of borrowing is available. There are countless other passages and isolated sentences where the style suggests, if not actual dependence on the text of Hecataeus, at least adherence to the Hecataean tradition of geographical description. (shrink)

For researchers and students interested in the connections between theoretically informed work and the possibilities for bettering people's everyday lives, this ...

This paper is concerned with certain ontological issues in the foundations of geographic representation. It sets out what these basic issues are, describes the tools needed to deal with them, and draws some implications for a general theory of spatial representation. Our approach has ramifications in the domains of mereology, topology, and the theory of location, and the question of the interaction of these three domains within a unified spatial representation theory is addressed. In the final part we also (...) consider the idea of non-standard geographies, which may be associated with geography under a classical conception in the same sense in which non-standard logics are associated with classical logic. (shrink)

This reference work is a reprint of the 1694 translation of Moreri's classic reference work . The two volumes contain a mixture of histiographical, geographical and poetical information. They chronicle the lives and actions of celebrated people from the time as well as offering invaluable information on various world-wide regions, empires and kingdoms. Containing over 25,000 entries, the English edition is generally considered superior to the French, as an additional section on the English, Scottish and Irish nobility was (...) added. (shrink)

In our globalized and interconnected world, companies are increasingly donating substantial amounts to good causes around the globe. Many companies choose to donate “at home” while others give to causes in faraway places where recipients are in dire need of support. Interestingly, past research on corporate donations has neglected the question of whether consumers differentially reward companies for geographically varying allocations of donation budgets. Through a mixed methods approach, this paper remedies this gap by developing and empirically testing a conceptual (...) framework of consumers’ preferences for geographically varying allocations of corporate donation budgets. In a first step, two preliminary field studies involving real donations explored customers’ preferences for donation allocations varying in geographical focus. A qualitative focus group study then investigated underlying rationales to inform the research and led to the development of hypotheses. Subsequently a large-scale between-subjects scenario experiment tested the predictions. Overall, results indicate that, in contrast with current managerial practice, customers prefer companies that split donations equally between domestic and foreign recipients or even donate only abroad. (shrink)

This paper is concerned with certain ontological issues in the foundations of geographic representation. It sets out what these basic issues are, describes the tools needed to deal with them, and draws some implications for a general theory of spatial representation. Our approach has ramifications in the domains of mereology, topology, and the theory of location, and the question of the interaction of these three domains within a unified spatial representation theory is addressed. In the final part we also (...) consider the idea of non-standard geographies, which may be associated with geography under a classical conception in the same sense in which non-standard logics are associated with classical logic. (shrink)

Cyprus, an island in the Eastern Mediterranean, has been divided by force since 1974. Citizens of the two partitions have not been allowed to cross the cease-fire line, controlled by the United Nations Force, or to have any kind of communication between them. This article describes the innovative use of information technology to break the communication barrier between the two geographically isolated communities and to facilitate the creation of a shared vision and a concrete strategy toward achieving this vision.

The topic of research ethics is assuming an increasingly more central role when preparing research proposals, with Institutional Review Boards being instructed to oversee more and more research activities. Graduate students, especially, should be educated about ethical and unethical research practices, for they will be taking over the research enterprise in the not-too-distant future. An ethics benchmark is outlined, and numerous research examples involving the themes of plagiarism, deception, fraud, confidentiality, and informed consent are discussed here. This narrative emphasizes that (...) the canons of good scholarship require research and data collection for research to be conducted in an ethical fashion. (shrink)

This article explores the tension between standardization and flexibility in information infrastructure. Just like other large technical systems, the geographically dispersed yet highly interconnected II becomes increasingly resistant to change. Still, II design must anticipate and prepare for changes, even substantial ones, if infrastructure is to survive. An II contains a huge number of components that alternate between standardization and change throughout their lifetimes. These components are interdependent: when one is changed, others have to remain stable, and vice versa. (...) The article examines theoretical concepts for frammg these aspects of an II. The empirical underpinning of the article is a study of two existing embryonic manifestations of II. (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)

Ontology, since Aristotle, has been conceived as a sort of highly general physics, a science of the types of entities in reality, of the objects, properties, categories and relations which make up the world. At the same time ontology has been for some two thousand years a speculative enterprise. It has rested methodologically on introspection and on the construction and analysis of elaborate world-models and of abstract formal-ontological theories. In the work of Quine and others this ontological theorizing in abstract (...) fashion about the world was supplemented by the study, based on the use of logical methods, of the ontological commitments or presuppositions embodied in scientific theories. In recent years both types of ontological study have found application in the world of information systems, for example in the construction of frameworks for knowledge representation and in database design and translation. As ontology is in this way drawn closer to the domain of real-world applications, the question arises as to whether it is possible to use empirical methods in studying ontological theories. More specifically: can we use empirical methods to test the ontological theories embodied in human cognition? We set forth the outlines of a framework for the formulation and testing of such theories as they relate to the specific domain of geographic objects and categories. (shrink)