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Papers by Emmanuel Papadakis

Geographic information systems represent and process space whereas people refer to and use place.... more Geographic information systems represent and process space whereas people refer to and use place. A question that arises is what are the benefits of introducing a unified data model that combines the rigid representation of space and the information-rich concepts of place. In this work we contribute to this research question by proposing a two-way interface that aims to bridge the notions of space and place. This interface relies on the four conceptions of space and interconnected spatial objects. Step-by-step descriptions as well as examples are provided to illustrate the intended use of the proposed interface.

Research shows that crime patterns are highly dependent on the environment and the presence of po... more Research shows that crime patterns are highly dependent on the environment and the presence of possible guardianship. Recent studies focus on the effects of various explanatory variables on spatial crime analysis, using environmental criminology as a basis. This study considers the notion of place in defining spatial patterns for hot and cold crime spots in the city of Manchester, UK. Global and local spatial regression models are employed to determine statistically significant relationships between crime types and spatial features. Results show high R² for hotspots, indicating a representative spatial pattern; however, additional information is needed for coldspots.

Place is a human interpretation of space; it augments the latter with information related to huma... more Place is a human interpretation of space; it augments the latter with information related to human activities, services, emotions and so forth. Searching for places rather than traditional space-based search represents significant challenges. The most prevalent method of addressing place-related queries is based on placenames but has limited potential due to the vagueness of natural language and its tendency to lead to ambiguous interpretations. In previous work we proposed a system-oriented formalization of place that goes beyond placenames by introducing composition patterns of place. In this study, we introduce flexibility into these patterns in terms of what is necessarily or possibly included when describing the spatial composition of a place and propose a novel automated process of extracting these patterns relying on both theoretical and empirical knowledge. The proposed methodology is exemplified through the use case of locating all the shopping areas within London, UK. 2012...

Theory and Practice of Logic Programming, 2020

Qualitative reasoning involves expressing and deriving knowledge based on qualitative terms such ... more Qualitative reasoning involves expressing and deriving knowledge based on qualitative terms such as natural language expressions, rather than strict mathematical quantities. Well over 40 qualitative calculi have been proposed so far, mostly in the spatial and temporal domains, with several practical applications such as naval traffic monitoring, warehouse process optimisation and robot manipulation. Even if a number of specialised qualitative reasoning tools have been developed so far, an important barrier to the wider adoption of these tools is that only qualitative reasoning is supported natively, when real-world problems most often require a combination of qualitative and other forms of reasoning. In this work, we propose to overcome this barrier by using ASP as a unifying formalism to tackle problems that require qualitative reasoning in addition to non-qualitative reasoning. A family of ASP encodings is proposed which can handle any qualitative calculus with binary relations. T...

ISPRS International Journal of Geo-Information, 2018

Around the globe, Geographic Information Systems (GISs) are well established in the daily workflo... more Around the globe, Geographic Information Systems (GISs) are well established in the daily workflow of authorities, businesses and non-profit organisations. GIS can effectively handle spatial entities and offer sophisticated analysis and modelling functions to deal with space. Only a small fraction of the literature in Geographic Information Science—or GIScience in short—has advanced the development of place, addressing entities with an ambiguous boundary and relying more on the human or social attributes of a location rather than on crisp geographic boundaries. While the GIScience developments support the establishment of the digital humanities, GISs were never designed to handle subjective or vague data. We, an international group of authors, juxtapose place and space in English language and in several other languages and discuss potential consequences for Geoinformatics and GIScience. In particular, we address the question of whether linguistic and cultural settings play a role in...

International Conference on GIScience Short Paper Proceedings, 2016

People assign context to space by defining places. Formalizing place enables digital systems to p... more People assign context to space by defining places. Formalizing place enables digital systems to provide a human-centred representation of the geographical world. In this paper we propose a multi-dimensional definition of place including spatial properties, composition and functionality. These dimensions define place as a set of functions, which entail a spatial structure expressed in patterns of spatial descriptions. Relying on this model, it is possible to define places as space infused with functional context by converting geometries to interrelated components that support certain functions.

Geographic information systems represent and process space whereas people refer to and use place.... more Geographic information systems represent and process space whereas people refer to and use place. A question that arises is what are the benefits of introducing a unified data model that combines the rigid representation of space and the information-rich concepts of place. In this work we contribute to this research question by proposing a two-way interface that aims to bridge the notions of space and place. This interface relies on the four conceptions of space and interconnected spatial objects. Step-by-step descriptions as well as examples are provided to illustrate the intended use of the proposed interface.

Research shows that crime patterns are highly dependent on the environment and the presence of po... more Research shows that crime patterns are highly dependent on the environment and the presence of possible guardianship. Recent studies focus on the effects of various explanatory variables on spatial crime analysis, using environmental criminology as a basis. This study considers the notion of place in defining spatial patterns for hot and cold crime spots in the city of Manchester, UK. Global and local spatial regression models are employed to determine statistically significant relationships between crime types and spatial features. Results show high R² for hotspots, indicating a representative spatial pattern; however, additional information is needed for coldspots.

Place is a human interpretation of space; it augments the latter with information related to huma... more Place is a human interpretation of space; it augments the latter with information related to human activities, services, emotions and so forth. Searching for places rather than traditional space-based search represents significant challenges. The most prevalent method of addressing place-related queries is based on placenames but has limited potential due to the vagueness of natural language and its tendency to lead to ambiguous interpretations. In previous work we proposed a system-oriented formalization of place that goes beyond placenames by introducing composition patterns of place. In this study, we introduce flexibility into these patterns in terms of what is necessarily or possibly included when describing the spatial composition of a place and propose a novel automated process of extracting these patterns relying on both theoretical and empirical knowledge. The proposed methodology is exemplified through the use case of locating all the shopping areas within London, UK. 2012...

Theory and Practice of Logic Programming, 2020

Qualitative reasoning involves expressing and deriving knowledge based on qualitative terms such ... more Qualitative reasoning involves expressing and deriving knowledge based on qualitative terms such as natural language expressions, rather than strict mathematical quantities. Well over 40 qualitative calculi have been proposed so far, mostly in the spatial and temporal domains, with several practical applications such as naval traffic monitoring, warehouse process optimisation and robot manipulation. Even if a number of specialised qualitative reasoning tools have been developed so far, an important barrier to the wider adoption of these tools is that only qualitative reasoning is supported natively, when real-world problems most often require a combination of qualitative and other forms of reasoning. In this work, we propose to overcome this barrier by using ASP as a unifying formalism to tackle problems that require qualitative reasoning in addition to non-qualitative reasoning. A family of ASP encodings is proposed which can handle any qualitative calculus with binary relations. T...

ISPRS International Journal of Geo-Information, 2018

Around the globe, Geographic Information Systems (GISs) are well established in the daily workflo... more Around the globe, Geographic Information Systems (GISs) are well established in the daily workflow of authorities, businesses and non-profit organisations. GIS can effectively handle spatial entities and offer sophisticated analysis and modelling functions to deal with space. Only a small fraction of the literature in Geographic Information Science—or GIScience in short—has advanced the development of place, addressing entities with an ambiguous boundary and relying more on the human or social attributes of a location rather than on crisp geographic boundaries. While the GIScience developments support the establishment of the digital humanities, GISs were never designed to handle subjective or vague data. We, an international group of authors, juxtapose place and space in English language and in several other languages and discuss potential consequences for Geoinformatics and GIScience. In particular, we address the question of whether linguistic and cultural settings play a role in...

International Conference on GIScience Short Paper Proceedings, 2016

People assign context to space by defining places. Formalizing place enables digital systems to p... more People assign context to space by defining places. Formalizing place enables digital systems to provide a human-centred representation of the geographical world. In this paper we propose a multi-dimensional definition of place including spatial properties, composition and functionality. These dimensions define place as a set of functions, which entail a spatial structure expressed in patterns of spatial descriptions. Relying on this model, it is possible to define places as space infused with functional context by converting geometries to interrelated components that support certain functions.