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检索条件"丛书名=Lecture Notes in Geoinformation and Cartography"

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Trust as a Proxy Measure for the Quality of Volunteered Geographic Information in the Case of OpenStreetMap 16

Trust as a Proxy Measure for the Quality of Volunteered Geog...

引用

16th AGILE Conference on Geographic Information Science

作者： Kessler, Carsten de Groot, Rene Theodore Anton Univ Munster Inst Geoinformat D-48149 Munster Germany

ISBN: (纸本)9783319006154

High availability and diversity make Volunteered Geographic Information (VGI) an interesting source of information for an increasing number of use cases. Varying quality, however, is a concern often raised when it comes to using VGI in professional applications. Recent research directs towards the estimation of VGI quality through the notion of trust as a proxy measure. In this chapter, we investigate which indicators influence trust, focusing on inherent properties that do not require any comparison with a ground truth dataset. The indicators are tested on a sample dataset extracted from OpenStreetMap. High numbers of contributors, versions and confirmations are considered as positive indicators, while corrections and revisions are treated as indicators that have a negative influence on the development of feature trustworthiness. In order to evaluate the trust measure, its results have been compared to the results of a quality measure obtained from a field survey. The quality measure is based on thematic accuracy, topological consistency, and information completeness. To address information completeness as a criterion of data quality, the importance of individual tags for a given feature type was determined based on a method adopted from information retrieval. The results of the comparison between trust assessments and quality measure show significant support for the hypothesis that feature-level VGI data quality can be assessed using a trust model based on data provenance.

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A Customizable Maturity Model for Assessing Collaboration in Disaster Management 8th

A Customizable Maturity Model for Assessing Collaboration in...

引用

8th Conference on Geo-information for Disaster Management (Gi4DM)

作者： Makela, Jaana Virrantaus, Kirsi Aalto Univ Dept Real Estate Planning & Geoinformat Sch Engn FI-00076 Aalto Finland

ISBN: (纸本)9783642332180

A maturity model can be used as a tool to assess the current state of competence, to set a roadmap for improvement and to assess the effects of development of collaboration in disaster management. Customized maturity models were developed for two disaster management exercises: a search and rescue exercise and an ICT exercise. The contents of the models were based on a literature review on maturity models, on the goals of the exercises, and on the interviews of the participating organizations. In the exercises, human agents performed a quick maturity assessment where they assessed the maturity level of the key capabilities of collaboration such as the sharing of critical information. Critical information such as geographic information is a prerequisite for shared situational awareness. The results of the maturity assessments were visualized on radar charts which facilitate the display and comparison of multivariate data from different exercises. They highlighted the strengths of collaboration and capabilities that need further development. The process itself: the development of the maturity model, the quick maturity assessment, and the presentation of the results is the main result of the research.

关键词： Disaster management Collaboration Shared situational awareness Geographic information Critical information Maturity assessment

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What You See is What You Map: Geometry-Preserving Micro-Mapping for Smaller Geographic Objects with MAPIT 16

What You See is What You Map: Geometry-Preserving Micro-Mapp...

引用

16th AGILE Conference on Geographic Information Science

作者： Schmid, Falko Frommberger, Lutz Cai, Cai Freksa, Christian Univ Bremen Int Lab Local Capac Bldg Capac Lab D-28359 Bremen Germany

ISBN: (纸本)9783319006154

Geographic information is increasingly contributed by volunteers via crowdsourcing platforms. However, most tools and methods require a high technical affinity of its users and a good understanding of geographic classification systems. These technological and educational barriers prevent casual users to contribute spatial data. In this chapter we present MAPIT, a method to acquire and contribute complex geographic data. We further introduce the concept of micro-mapping, the acquisition of geometrically correct geometric data of small geographic entities. MAPIT is a method for micro-mapping with smartphones with high geometric precision. We show that MAPIT is highly accurate and able to reconstruct the geometry of mapped entities correctly. Please check and confirm the author names and initials are correct.

关键词： Mapping

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Error-Aware Spatio-Temporal Aggregation in the Model Web 16

Error-Aware Spatio-Temporal Aggregation in the Model Web

引用

16th AGILE Conference on Geographic Information Science

作者： Stasch, Christoph Pebesma, Edzer Graeler, Benedikt Gerharz, Lydia Univ Munster Inst Geoinformat D-48149 Munster Germany

ISBN: (纸本)9783319006154

Spatio-temporal aggregation of observed or predicted values for environmental phenomena is needed for fusing sensor data or coupling sensors and environmental models. However, estimates from sensors or environmental models can never represent our world precisely and are subject to errors. Hence, there is uncertainty in the estimates that needs to be considered in environmental model workflows. This chapter presents an approach for an error-aware spatio-temporal aggregation in the Web, where probabilistic uncertainties are used within a Monte Carlo simulation. The approach is applied in a Web-based model chain that provides uncertain crop yield predictions on field parcel level that are aggregated to larger regions.

关键词： Errors

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A Virtual Police Force as Part of an Integrated Community Security Network: The Case of the Dutch VPK Programme 8th

A Virtual Police Force as Part of an Integrated Community Se...

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8th Conference on Geo-information for Disaster Management (Gi4DM)

作者： Broer, Wim Virtueel Politie Korps Innovatieplatform Politie Nederland NL-3528 BJ Utrecht Netherlands

ISBN: (纸本)9783642332180

The internet revolution, with all of its accompanying positive and negative consequences, has increasingly come to impact on society at large. It also has significant consequences and opportunities for the police. The task is to respond to these challenges with intelligent solutions, and using these solutions to empower police professionals in the field. The desire to meet these challenges has led to a programme called 'the Virtual Police Service (Corps or Service)'. Its ambition is to build a new way of delivering professional policing services, by making optimal use of information cloud technology. This will maximise the rich source of information and communication potentially available on the internet.

关键词： Police Human factors User-centric design Cloud computing

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An Approach to Qualitative Emergency Management 8th

An Approach to Qualitative Emergency Management

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8th Conference on Geo-information for Disaster Management (Gi4DM)

作者： Al-Salman, Rami Dylla, Frank Frommberger, Lutz Univ Bremen Initial Training Network Geocrowd POB 330 440 D-28359 Bremen Germany Univ Bremen SFB TR 8 Spatial Cognit D-28359 Bremen Germany Univ Bremen Capac Lab D-28359 Bremen Germany

ISBN: (纸本)9783642332180

Emergency Management Systems (EMSs) are playing an important role to save people's life's and to reduce the effects of disasters such as earthquakes or floods. In this paper, we propose an approach to qualitative emergency management. This will empower emergency managers to query spatial databases using qualitative terms used in spoken language, such as 'near' or 'north of'. By providing a qualitative DBMS layer that covers the three qualitative aspects topology, distance, and direction, our system is able to handle qualitative spatial queries. Qualitative spatial queries are translated into formal Structured Query Language (SQL) database queries which are used to query and retrieve results from spatial databases.

关键词： Emergency management system Volunteered geographic information Qualitative spatial representations Matching Spatial indexing

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On the Roles of Geospatial Information for Risk Assessment of Land Subsidence in Urban Areas of Indonesia 8th

On the Roles of Geospatial Information for Risk Assessment o...

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8th Conference on Geo-information for Disaster Management (Gi4DM)

作者： Abidin, Hasanuddin Z. Andreas, Heri Gumilar, Irwan Sidiq, Teguh P. Fukuda, Yoichi Inst Technol Bandung Geodesy Res Grp Fac Earth Sci & Technol Jl Ganesha 10 Bandung Indonesia Kyoto Univ Grad Sch Sci Dept Geophys Kyoto 6068502 Japan

ISBN: (纸本)9783642332180

Land subsidence is a silent hazard that may occurs in large urban areas, and usually caused by combination of excessive groundwater extraction, natural consolidation of alluvium soil, load of constructions and tectonic activities. Geospatial information is useful for studying the characteristics, causes, impacts and cost of land subsidence. This paper concentrates on the roles of geospatial information for risk assessment of land subsidence in three large cities in Indonesia, namely Jakarta, Bandung and Semarang. Geodetic based results show that land subsidence rates in all three cities generally have spatial and temporal variations, and their magnitude is in average about 5-10 cm/year and can reach up to about 20 cm/year at certain locations and times. The impact of land subsidence can be seen already in the field in forms of the buildings and infrastructure cracking, the wider expansion of (coastal) flooding areas, and increased inland sea water intrusion. Land subsidence has a strong linkage with urban development process. Urban development increases the built-up areas, population, economic and industrial activities, and also groundwater extraction, which can then lead to land subsidence.

关键词： GIS Data integration Data managemnet Flooding Spatial correlation

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A Visual Analytics Approach for Assessing Pedestrian Friendliness of Urban Environments 16

A Visual Analytics Approach for Assessing Pedestrian Friendl...

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16th AGILE Conference on Geographic Information Science

作者： Schreck, Tobias Omer, Itzhak Bak, Peter Lerman, Yoav Univ Konstanz Constance Germany

ISBN: (纸本)9783319006154

The availability of efficient transportation facilities is vital to the function and development of modern cities. Promoting walking is crucial for supporting livable communities and cities. Assessing the quality of pedestrian facilities and constructing appropriate pedestrian walking facilities are important tasks in public city planning. Additionally, walking facilities in a community affect commercial activities including private investment decisions such as those of retailers. However, analyzing what we call pedestrian friendliness in an urban environment involves multiple data perspectives, such as street networks, land use, and other multivariate observation measurements, and consequently poses significant challenges. In this study, we investigate the effect of urban environment properties on pedestrian movement in different locations in the metropolitan region of Tel Aviv. The first urban area we investigated was the inner city of the Tel Aviv metropolitan region, one of the central regions in Tel Aviv, a city that serves many non-local residents. For simplicity, we refer to this area as Tel Aviv. We also investigated Bat Yam, a small city, whose residents use many of the services of Tel Aviv. We apply an improved tool for visual analysis of the correlation between multiple independent and one dependent variable in geographical context. We use the tool to investigate the effect of functional and topological properties on the volume of pedestrian movement. The results of our study indicate that these two urban areas differ greatly. The urban area of Tel Aviv has much more correspondence and interdependency among the functional and topological properties of the urban environment that might influence pedestrian movement. We also found that the pedestrian movements as well as the related urban environment properties in this region are distributed geographically in a more equal and organized form.

关键词： Urban planning

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The STIG: Framework for the Stress-Test for Infrastructures of Geographic Information 8th

The STIG: Framework for the Stress-Test for Infrastructures ...

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8th Conference on Geo-information for Disaster Management (Gi4DM)

作者： Nushi, Bujar Van Loenen, Bastiaan Delft Univ Technol Delft Netherlands

ISBN: (纸本)9783642332180

Spatial data infrastructure (SDI) facilitates the collection, maintenance, dissemination and use of spatial information. To stimulate SDI development effectively and efficiently, it is key to assess the progress and benefits of the SDI. SDI is difficult to assess because of its complex, dynamic, multi-faceted and constantly evolving nature. Several SDI assessment methods exist. However, these are still in an infancy stage and none of these appear to meet the requirements of practitioners. As a result, SDI decision makers are still without any guidance on the success of their SDI. In this paper we propose a new method for SDI assessment: The STIG, a Stress-test for Infrastructures of Geographical information. The development and application of the Stress-test methodology will provide new valuable information for decision-makers about the aspects of SDIs that need to be improved in order to take full advantage of the potential benefit of the SDIs, especially in the instance of disaster management.

关键词： SDI assessment The STIG Stress-test Disaster management

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Agent-Enabled Information Provisioning While Retaining Control: A Demonstration 8th

Agent-Enabled Information Provisioning While Retaining Contr...

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8th Conference on Geo-information for Disaster Management (Gi4DM)

作者： de Bruijn, Peter Wijngaards, Niek Stichting Studio Veiligheid The Hague Netherlands Res & Technol Thales Nederland BV Delft Netherlands D CIS Lab Delft Netherlands

ISBN: (纸本)9783642332180

The project 'SlimVerbinden' addresses the challenge of retaining autonomy while sharing information among multiple parties. Based on a web of trust, information providers can grant and deny access to information, while information consumers can delegate access to specific members within their 'organization' (which can be defined within and/or across existing organizations). The policy-and PKI-based realization enables an agent-based secure shared distributed dataspace where no single party knows 'everything' and the barriers to information sharing are lowered. The use-case involves public-private cooperation during the mitigation of an incident and drives the development of an operational pilot.

关键词： Information sharing Control systems Agent-based

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