Category: GIS

Crowdsourcing Urban Form and Function

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We have just had published a new paper entitled: “Crowdsourcing Urban Form and Function” in International Journal of Geographical Information Science which showcases some of our recent work with respect to cities and how new sources of information can be used to study urban morphology at a variety of spatial and temporal scales. Below is the abstract for the paper: 

“Urban form and function have been studied extensively in urban planning and geographic information science. However, gaining a greater understanding of how they merge to define the urban morphology remains a substantial scientific challenge. Towards this goal, this paper addresses the opportunities presented by the emergence of crowdsourced data to gain novel insights into form and function in urban spaces. We are focusing in particular on information harvested from social media and other open-source and volunteered datasets (e.g. trajectory and OpenStreetMap data). These data provide a first-hand account of form and function from the people who define urban space through their activities. This novel bottom-up approach to study these concepts complements traditional urban studies work to provide a new lens for studying urban activity. By synthesizing recent advancements in the analysis of open-source data we provide a new typology for characterizing the role of crowdsourcing in the study of urban morphology. We illustrate this new perspective by showing how social media, trajectory, and traffic data can be analyzed to capture the evolving nature of a city’s form and function. While these crowd contributions may be explicit or implicit in nature, they are giving rise to an emerging research agenda for monitoring, analyzing and modeling form and function for urban design and analysis.”

This paper builds and extends considerably our prior work, with respect to crowdsourcing, volunteered and ambient geographic information. In the scope of this paper we use the term ‘urban form’ to refer to the aggregate of the physical shape of the city, its buildings, streets, and all other elements that make up the urban space. In essence, the geometry of the city. In contrast, we use the term ‘urban function’ to refer to the activities that are taking place within this space. To this end we contrast how crowdsourced data can related to more traditional sources of such information both explicitly and implicitly as shown in the table below. 

A typology of implicit and explicit form and function content

In addition, we also discuss in the paper how these new sources of data, which are often at finer resolutions than more authoritative data are allowing us to to customize the we we aggregate the data  at various geographical levels as shown below. Such aggregations can range from building footprints and addresses to street blocks (e.g. for density analysis), or street networks (e.g. for accessibility analysis). For large-scale urban analysis we can revert to the use of zonal geographies or grid systems.  
Aggregation methods for varied scales of built environment analysis

In the application section of the paper we highlight how we can extract implicit form and function from crowdsourced data. The image below for example, shows how we can take information from Twitter, and differentiate different neighborhoods over space and time.

Neighborhood map and topic modeling results showing the mixture of social functions in each area.
Finally in the paper, we outline an emerging research agenda related to the “persistent urban morphology concept” as shown below. Specifically how crowdsourcing is changing how we collect, analyze and model urban morphology. Moreover, how this new paradigm provides a new lens for studying the conceptualization of how cities operate, at much finer temporal, spatial, and social scales than we had been able to study so far.

The persistent urban morphology concept.

We hope you enjoy the paper.

Full Reference:  

Crooks, A.T., Pfoser, D., Jenkins, A., Croitoru, A., Stefanidis, A., Smith, D. A., Karagiorgou, S., Efentakis, A. and Lamprianidis, G. (2015), Crowdsourcing Urban Form and Function, International Journal of Geographical Information Science. DOI: 10.1080/13658816.2014.977905 (pdf)

 

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AGI, Crowdsourcing, Form and function, GIS, social media, urban morphology, Volunteered Geographic Information

British Ecological Society & Société Française d’Ecologie meeting, Lille (Day 2)

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Notes from the second day of the BES/sfé annual meeting (see first day notes here) Several talks in sessions that attracted my attention: Daniel Richards (National University of Singapore) looked at cultural ecosystem services from social media sources. He mentioned previous study by  Casalegno at al 2013 study on social media and ecosystem services . In Singapore […]

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BES, BESFE2014, British Ecological Society, citizen science, Conference, Ecosystem services, environmental GIS, Environmental information, GIS

Linking Cyber and Physical Spaces

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We have just published a new paper in  Computers, Environment and Urban Systems entitled “Linking Cyber and Physical Spaces Through Community Detection And Clustering in Social Media Feeds“. In the paper we explore how geosocial media is providing us with  a new social communication avenue and a novel source of geosocial information. 
In particular, we discuss the notion of physical presence within social media and its importance for exploring the relation between the cyber and the physical domains. We discuss how communities and groups can be detected in both the cyber and physical space, and how they can be processed to form a ‘hybrid’ geosocial view of communities using social network analysis, community detection (the Louvain method) and DenStream. To showcase these concepts and their benefits, we present the analysis of two case studies that make use of Twitter data associated with two different types of events: a planned activity during the Occupy Wall Street (OWS) Day of Action (November 17th, 2011), and the response to the Boston Marathon Bombing (April 15, 2013). We conclude with a summary and outlook. Below is the abstract of the paper:

Over the last decade we have witnessed a significant growth in the use of social media. Interactions within their context lead to the establishment of groups that function at the intersection of the physical and cyber spaces, and as such represent hybrid communities. Gaining a better understanding of how information flows in these hybrid communities is a substantial scientific challenge with significant implications on our ability to better harness crowd-contributed content. This paper addresses this challenge by studying how information propagates and evolves over time at the intersection of the physical and cyber spaces. By analyzing the spatial footprint, social network structure, and content in both physical and cyber spaces we advance our understanding of the information propagation mechanisms in social media. The utility of this approach is demonstrated in two real-world case studies, the first reflecting a planned event (the Occupy Wall Street – OWS – movement’s Day of Action in November 2011), and the second reflecting an unexpected disaster (the Boston Marathon bombing in April 2013). Our findings highlight the intricate nature of the propagation and evolution of information both within and across cyber and physical spaces, as well as the role of hybrid networks in the exchange of information between these spaces.

Research highlights include:

    • Our analysis includes two major events as captured in Twitter.
    • The themes in cyber and physical communities tend to converge over time.
    • Messages among physical space users are more consistent at the onset of the event.
    • Geolocated users are consuming information more than they produce.

      Below are some of the images from the paper. Specifically the first image is how one can think of the relationships between physical and cyber spaces.  The next image provides an overview Our geosocial analysis framework for examining cyber and physical communities.

      Our Geosocial analysis framework

      In the figure below we show an example of using DenStream for spatiotemporal clustering and how the process can capture the protest activities that were planned for the Occupy Wall Street movement’s Day of Action. Each dot corresponds to the originating location of a geolocated tweet; The color of each point indicates the time of the corresponding tweet, ranging from dark blue (early morning, 0) to dark red (late night, 1). While the circles represent a specific spatiotemporal cluster. For example the circle labeled A marked the start of the day where people congregated around Wall Street while circle labeled C shows a cluster at Foley Square.
      Physical space groups identified in the lower Manhattan area. Each dot corresponds to the originating location of a geolocated tweet; The color of each point indicates the time of the corresponding tweet, ranging from dark blue (early morning, 0) to dark red (late night, 1).
      While in the figure below we show one example of linking the cyber and physical communities. Specifically in (a), the top five communities (node degree > 100) in the cyber space retweet network (each community is designated by one color) are shown; (b) shows the physical space groups; and (c) shows the resulting  hybrid meta-network where the connections between physical groups (P nodes), and cyber space communities (C nodes) are shown.

      We hope you enjoy the paper.

      Full Reference:

      Croitoru, A., Wayant, N., Crooks, A.T., Radzikowski, J. and Stefanidis, A. (2014), Linking Cyber and Physical Spaces Through Community Detection And Clustering in Social Media Feeds, Computers, Environment and Urban Systems.  doi:10.1016/j.compenvurbsys.2014.11.002

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      GeoSocial, GIS, SNA, social media

      Linking Cyber and Physical Spaces

      Posted on by
      We have just published a new paper in  Computers, Environment and Urban Systems entitled “Linking Cyber and Physical Spaces Through Community Detection And Clustering in Social Media Feeds“. In the paper we explore how geosocial media is providing us with  a new social communication avenue and a novel source of geosocial information. 
      In particular, we discuss the notion of physical presence within social media and its importance for exploring the relation between the cyber and the physical domains. We discuss how communities and groups can be detected in both the cyber and physical space, and how they can be processed to form a ‘hybrid’ geosocial view of communities using social network analysis, community detection (the Louvain method) and DenStream. To showcase these concepts and their benefits, we present the analysis of two case studies that make use of Twitter data associated with two different types of events: a planned activity during the Occupy Wall Street (OWS) Day of Action (November 17th, 2011), and the response to the Boston Marathon Bombing (April 15, 2013). We conclude with a summary and outlook. Below is the abstract of the paper:

      Over the last decade we have witnessed a significant growth in the use of social media. Interactions within their context lead to the establishment of groups that function at the intersection of the physical and cyber spaces, and as such represent hybrid communities. Gaining a better understanding of how information flows in these hybrid communities is a substantial scientific challenge with significant implications on our ability to better harness crowd-contributed content. This paper addresses this challenge by studying how information propagates and evolves over time at the intersection of the physical and cyber spaces. By analyzing the spatial footprint, social network structure, and content in both physical and cyber spaces we advance our understanding of the information propagation mechanisms in social media. The utility of this approach is demonstrated in two real-world case studies, the first reflecting a planned event (the Occupy Wall Street – OWS – movement’s Day of Action in November 2011), and the second reflecting an unexpected disaster (the Boston Marathon bombing in April 2013). Our findings highlight the intricate nature of the propagation and evolution of information both within and across cyber and physical spaces, as well as the role of hybrid networks in the exchange of information between these spaces.

      Research highlights include:

        • Our analysis includes two major events as captured in Twitter.
        • The themes in cyber and physical communities tend to converge over time.
        • Messages among physical space users are more consistent at the onset of the event.
        • Geolocated users are consuming information more than they produce.

          Below are some of the images from the paper. Specifically the first image is how one can think of the relationships between physical and cyber spaces.  The next image provides an overview Our geosocial analysis framework for examining cyber and physical communities.

          Our Geosocial analysis framework

          In the figure below we show an example of using DenStream for spatiotemporal clustering and how the process can capture the protest activities that were planned for the Occupy Wall Street movement’s Day of Action. Each dot corresponds to the originating location of a geolocated tweet; The color of each point indicates the time of the corresponding tweet, ranging from dark blue (early morning, 0) to dark red (late night, 1). While the circles represent a specific spatiotemporal cluster. For example the circle labeled A marked the start of the day where people congregated around Wall Street while circle labeled C shows a cluster at Foley Square.
          Physical space groups identified in the lower Manhattan area. Each dot corresponds to the originating location of a geolocated tweet; The color of each point indicates the time of the corresponding tweet, ranging from dark blue (early morning, 0) to dark red (late night, 1).
          While in the figure below we show one example of linking the cyber and physical communities. Specifically in (a), the top five communities (node degree > 100) in the cyber space retweet network (each community is designated by one color) are shown; (b) shows the physical space groups; and (c) shows the resulting  hybrid meta-network where the connections between physical groups (P nodes), and cyber space communities (C nodes) are shown.

          We hope you enjoy the paper.

          Full Reference:

          Croitoru, A., Wayant, N., Crooks, A.T., Radzikowski, J. and Stefanidis, A. (2014), Linking Cyber and Physical Spaces Through Community Detection And Clustering in Social Media Feeds, Computers, Environment and Urban Systems.  doi:10.1016/j.compenvurbsys.2014.11.002

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          GeoSocial, GIS, SNA, social media

          International Encyclopedia of Geography – Quality Assurance of VGI

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          The Association of American Geographers is coordinating an effort to create an International Encyclopedia of Geography. Plans started in 2010, with an aim to see the 15 volumes project published in 2015 or 2016. Interestingly, this shows that publishers and scholars are still seeing the value in creating subject-specific encyclopedias. On the other hand, the weird […]

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          citizen science, Concepts, Crowdsourcing, GIS, GIS Usability, H.O.T Task Manager, OpenStreetMap, quality assurance, Spatial Data Quality, VGI, Volunteered Geographic Information, WheelMap

          New Paper: ABM Applied to the Spread of Cholera

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          Cholera transmission through the interaction
          of host and the environment
          We are pleased to announce we have just had a paper published in Environmental Modelling and Software entitled “An Agent-based Modeling Approach Applied to the Spread of Cholera“
          Research highlights include:
          • An agent-based model was developed to explore the spread of cholera.
          • The progress of cholera transmission is represented through a Susceptible-Exposed-Infected-Recovered (SEIR) model. 
          • The model integrates geographical data with agents’ daily activities within a refugee camp.
          • Results show cholera infections are impacted by agents’ movement and source of contamination. 
          • The model has the potential for aiding humanitarian response with respect to disease outbreaks.
          Cholera dynamics when rainfall is introduced.

          Spatial spread of cholera over the course of a year.
          Study area
          If the research highlights have not turned you off, the abstract to the paper is below:
          “Cholera is an intestinal disease and is characterized by diarrhea and severe dehydration. While cholera has mainly been eliminated in regions that can provide clean water, adequate hygiene and proper sanitation; it remains a constant threat in many parts of Africa and Asia. Within this paper, we develop an agent-based model that explores the spread of cholera in the Dadaab refugee camp in Kenya. Poor sanitation and housing conditions contribute to frequent incidents of cholera outbreaks within this camp. We model the spread of cholera by explicitly representing the interaction between humans and their environment, and the spread of the epidemic using a Susceptible-Exposed-Infected-Recovered model. Results from the model show that the spread of cholera grows radially from contaminated water sources and seasonal rains can cause the emergence of cholera outbreaks. This modeling effort highlights the potential of agent-based modeling to explore the spread of cholera in a humanitarian context.”
          Finally to aide replication, experimentation or just explore how you can link raster and vector data in GeoMason, we have a dedicated website where you can download executables of the model along with the source code and associated data. Moreover we have provide a really detailed Overview, Design concepts, and Details (ODD) Protocol document of the model.

          Full Reference:

          Crooks, A.T. and Hailegiorgis, A.B. (2014), An Agent-based Modeling Approach Applied to the Spread of Cholera, Environmental Modelling and Software, 62: 164-177
          DOI: 10.1016/j.envsoft.2014.08.027 (pdf)

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          ABM, Disease, GeoMason, GIS, MASON

          New Paper: ABM Applied to the Spread of Cholera

          Posted on by
          Cholera transmission through the interaction
          of host and the environment
          We are pleased to announce we have just had a paper published in Environmental Modelling and Software entitled “An Agent-based Modeling Approach Applied to the Spread of Cholera“
          Research highlights include:
          • An agent-based model was developed to explore the spread of cholera.
          • The progress of cholera transmission is represented through a Susceptible-Exposed-Infected-Recovered (SEIR) model. 
          • The model integrates geographical data with agents’ daily activities within a refugee camp.
          • Results show cholera infections are impacted by agents’ movement and source of contamination. 
          • The model has the potential for aiding humanitarian response with respect to disease outbreaks.
          Cholera dynamics when rainfall is introduced.

          Spatial spread of cholera over the course of a year.
          Study area
          If the research highlights have not turned you off, the abstract to the paper is below:
          “Cholera is an intestinal disease and is characterized by diarrhea and severe dehydration. While cholera has mainly been eliminated in regions that can provide clean water, adequate hygiene and proper sanitation; it remains a constant threat in many parts of Africa and Asia. Within this paper, we develop an agent-based model that explores the spread of cholera in the Dadaab refugee camp in Kenya. Poor sanitation and housing conditions contribute to frequent incidents of cholera outbreaks within this camp. We model the spread of cholera by explicitly representing the interaction between humans and their environment, and the spread of the epidemic using a Susceptible-Exposed-Infected-Recovered model. Results from the model show that the spread of cholera grows radially from contaminated water sources and seasonal rains can cause the emergence of cholera outbreaks. This modeling effort highlights the potential of agent-based modeling to explore the spread of cholera in a humanitarian context.”
          Finally to aide replication, experimentation or just explore how you can link raster and vector data in GeoMason, we have a dedicated website where you can download executables of the model along with the source code and associated data. Moreover we have provide a really detailed Overview, Design concepts, and Details (ODD) Protocol document of the model.

          Full Reference:

          Crooks, A.T. and Hailegiorgis, A.B. (2014), An Agent-based Modeling Approach Applied to the Spread of Cholera, Environmental Modelling and Software, 62: 164-177
          DOI: 10.1016/j.envsoft.2014.08.027 (pdf)

          Continue reading »
          ABM, Disease, GeoMason, GIS, MASON

          Call for Papers: New Directions in Geospatial Simulation

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          New Directions In Geospatial Simulation
          The geospatial simulation community has enjoyed steady growth over the past decade as novel and advanced forms of agent-based and cellular automata modeling continue to facilitate the exploration of complex geographic problems facing the world today. It is now an opportune time to consider the future direction of this community and explore ways to leverage geospatial simulation in professional arenas. The aim of these sessions is to bring together researchers utilizing agent-based and cellular automata techniques and associated methodologies to discuss new directions in geospatial simulation. We invite papers that fall into one of the following four categories:
          • Graduate student geospatial simulation research
          • Methodological advances of agent-based or cellular automata modeling
          • New application frontiers in geospatial simulation
          • Approaches for evaluating the credibility of geospatial simulation models
          Student papers will be presented in an interactive short paper session with presentations no longer than five minutes and no more than ten slides. Following presentations, students will form a panel that will address questions from the audience as directed by the session moderator. Student presentations will be judged as a part of a Best Student Paper award, the winner of which will receive an award of $500.
          All other papers will be placed in one of the following three sessions: (1) Methodological Advances, (2) Novel Applications, or (3) Model Credibility. Each session will be comprised of four speakers followed by a twenty-minute discussion on the session topic.
          Please e-mail the abstract and key words with your expression of intent to Chris Bone by October 28, 2014. Please make sure that your abstract conforms to the AAG guidelines in relation to title, word limit and key words and as specified at http://www.aag.org/cs/annualmeeting/call_for_papers. An abstract should be no more than 250 words that describe the presentation’s purpose, methods, and conclusions as well as to include keywords. Full submissions will be given priority over submissions with just a paper title.
          ORGANIZERS:
          Chris Bone, Department of Geography, University of Oregon
          Andrew Crooks, Department of Computational Social Science, George Mason University
          Alison Heppenstall, School of Geography, University of Leeds
          Arika Ligmann-Zielinska, Department of Geography, Michigan State University
          David O’Sullivan, Department of Geography, University of California, Berkeley
          TIMELINE:
          October 14th, 2014: Second call for papers
          October 28th, 2014: Abstract submission and expression of intent to session organizers. E-mail Chris Bone by this date if you are interested in being in this session. Please submit an abstract and key words with your expression of intent. Full submissions will be given priority over submissions with just a paper title.
          October 31st, 2014: Session finalization. Session organizers determine session order and content and notify authors.
          November 3rd, 2014: Final abstract submission to AAG, via www.aag.org. All participants must register individually via this site. Upon registration you will be given a participant number (PIN). Send the PIN and a copy of your final abstract to Chris Bone. Neither the organizers nor the AAG will edit the abstracts.

          November 5th, 2014: AAG registration deadline. Sessions submitted to AAG for approval.
          April 21-25, 2014: AAG meeting, Chicago, Illinois, USA.

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          AAG, ABM, CA, complexity, GIS

          Call for Papers: New Directions in Geospatial Simulation

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          New Directions In Geospatial Simulation
          The geospatial simulation community has enjoyed steady growth over the past decade as novel and advanced forms of agent-based and cellular automata modeling continue to facilitate the exploration of complex geographic problems facing the world today. It is now an opportune time to consider the future direction of this community and explore ways to leverage geospatial simulation in professional arenas. The aim of these sessions is to bring together researchers utilizing agent-based and cellular automata techniques and associated methodologies to discuss new directions in geospatial simulation. We invite papers that fall into one of the following four categories:
          • Graduate student geospatial simulation research
          • Methodological advances of agent-based or cellular automata modeling
          • New application frontiers in geospatial simulation
          • Approaches for evaluating the credibility of geospatial simulation models
          Student papers will be presented in an interactive short paper session with presentations no longer than five minutes and no more than ten slides. Following presentations, students will form a panel that will address questions from the audience as directed by the session moderator. Student presentations will be judged as a part of a Best Student Paper award, the winner of which will receive an award of $500.
          All other papers will be placed in one of the following three sessions: (1) Methodological Advances, (2) Novel Applications, or (3) Model Credibility. Each session will be comprised of four speakers followed by a twenty-minute discussion on the session topic.
          Please e-mail the abstract and key words with your expression of intent to Chris Bone by October 28, 2014. Please make sure that your abstract conforms to the AAG guidelines in relation to title, word limit and key words and as specified at http://www.aag.org/cs/annualmeeting/call_for_papers. An abstract should be no more than 250 words that describe the presentation’s purpose, methods, and conclusions as well as to include keywords. Full submissions will be given priority over submissions with just a paper title.
          ORGANIZERS:
          Chris Bone, Department of Geography, University of Oregon
          Andrew Crooks, Department of Computational Social Science, George Mason University
          Alison Heppenstall, School of Geography, University of Leeds
          Arika Ligmann-Zielinska, Department of Geography, Michigan State University
          David O’Sullivan, Department of Geography, University of California, Berkeley
          TIMELINE:
          October 14th, 2014: Second call for papers
          October 28th, 2014: Abstract submission and expression of intent to session organizers. E-mail Chris Bone by this date if you are interested in being in this session. Please submit an abstract and key words with your expression of intent. Full submissions will be given priority over submissions with just a paper title.
          October 31st, 2014: Session finalization. Session organizers determine session order and content and notify authors.
          November 3rd, 2014: Final abstract submission to AAG, via www.aag.org. All participants must register individually via this site. Upon registration you will be given a participant number (PIN). Send the PIN and a copy of your final abstract to Chris Bone. Neither the organizers nor the AAG will edit the abstracts.

          November 5th, 2014: AAG registration deadline. Sessions submitted to AAG for approval.
          April 21-25, 2014: AAG meeting, Chicago, Illinois, USA.

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          AAG, ABM, CA, complexity, GIS

          Geographies of Co-Production: highlights of the RGS/IBG ’14 conference

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          The 3 days of the Royal Geographical Society (with IBG) or RGS/IBG  annual conference are always valuable, as they provide an opportunity to catch up with the current themes in (mostly human) Geography. While I spend most of my time in an engineering department, I also like to keep my ‘geographer identity’ up to date as this […]

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          co-production of knowledge, Conference, GIS, Participatory Mapping, Participatory methods, PPGIS, RGS, RGSIBG14, Royal Geographical Society, Smart Cities

          OpenStreetMap studies (and why VGI not equal OSM)

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          As far as I can tell, Nelson et al. 2006 ‘Towards development of a high quality public domain global roads database‘ and Taylor & Caquard 2006 Cybercartography: Maps and Mapping in the Information Era are the first peer review papers that mention OpenStreetMap. Since then, OpenStreetMap received plenty of academic attention. More ‘conservative’ search engines such as ScienceDirect […]

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          GIS, GIScience, OpenStreetMap, OSM, VGI, Volunteered Geographic Information

          Happy 10th Birthday, OpenStreetMap!

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          Today, OpenStreetMap celebrates 10 years of operation as counted from the date of registration. I’ve heard about the project when it was in early stages, mostly because I knew Steve Coast when I was studying for my Ph.D. at UCL.  As a result, I was also able to secured the first ever research grant that focused […]

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          GeoWeb, GIS, Linux, mapping, Neogeography, OpenStreetMap, OSM, Participatory Mapping, VGI, Volunteered Geographic Information, Wikipedia

          Vespucci Institute on citizen science and VGI

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          The Vespucci initiative has been running for over a decade, bringing together participants from wide range of academic backgrounds and experiences to explore, in a ‘slow learning’ way, various aspects of geographic information science research. The Vespucci Summer Institutes are week long summer schools, most frequently held at Fiesole, a small town overlooking Florence. This year, the […]

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          citizen science, Concepts, Extreme Citizen Science, GIS, Summer school, Vespucci, VGI

          Crowdsourced Geographic Information in Government

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          Today marks the publication of the report ‘crowdsourced geographic information in government‘. The report is the result of a collaboration that started in the autumn of last year, when the World Bank Global Facility for Disaster Reduction and Recovery(GFDRR)  requested to carry out a study of the way crowdsourced geographic information is used by governments. The […]

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          citizen science, Crowdsourcing, Disaster response, GFDRR, GIS, Government, Open Data, OpenStreetMap, Papers, PPGIS, Report, Research projects, VGI, Volunteered Geographic Information, World Bank

          Third day of INSPIRE 2014 – any space for civil society and citizens?

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          At the last day of INSPIRE conference, I’ve attended a session about  apps and applications and the final plenary which focused on knowledge based economy and the role of inspire within it. Some notes from the talks including my interpretations and comments. Dabbie Wilson from the Ordnance Survey highlighted the issues that the OS is facing […]

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          citizen science, Conference, data quality, GIS, Government, government data, HMLR, INSPIRE, INSPIRE 2014, knowledge based economy, ordnance survey, smartphone apps, Spatial Data Quality, VGI

          Second day of INSPIRE 2014 – open and linked data

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          Opening geodata is an interesting issue for INSPIRE  directive. INSPIRE was set before the hype of Government 2.0 was growing and pressure on opening data became apparent, so it was not designed with these aspects in mind explicitly. Therefore the way in which the organisations that are implementing INSPIRE are dealing with the provision of open […]

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          GIS, GIScience, Google, INSPIRE 2014, INSPIRE directive, Linked Data, Open Data, SDI, Usability

          Crowdsourcing, Citizen Science and INSPIRE

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          The INSPIRE 2014 conference marks the middle of the implementation process of  the INSPIRE directive (Infrastructure for Spatial Information in the European Community). The directive is aimed at establishing a pan-European Spatial Data Infrastructure (SDI), and that mean lots of blueprints, pipes, machine rooms and protocols for enabling the sharing of geographic information. In GIS jargon,  blueprints translate to […]

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          citizen science, Conference, Crowdsourcing, europe, European Community, GIS, INSPIRE, INSPIRE 2014, VGI, Volunteered Geographic Information

          Wilson Center talk – Environmental Information: The Roles of Experts and the Public

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          On 29th April, I gave a talk in the Wilson Center in Washington DC on ‘Environmental Information – the Roles of Experts and the Public‘. The event was organised by Lea Shanley, who is heading the ‘Commons Lab‘ initiative of the center, and Dr Jay Benforado, from the US Environment Protection Agency (EPA) provided a […]

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          Aarhus convention, citizen science, Environmental information, GIS, Papers, Principle 10, public access to environmental information

          Wilson Center talk – Environmental Information: The Roles of Experts and the Public

          Posted on by

          On 29th April, I gave a talk in the Wilson Center in Washington DC on ‘Environmental Information – the Roles of Experts and the Public‘. The event was organised by Lea Shanley, who is heading the ‘Commons Lab‘ initiative of the center, and Dr Jay Benforado, from the US Environment Protection Agency (EPA) provided a […]

          Continue reading »
          Aarhus convention, citizen science, Environmental information, GIS, Papers, Principle 10, public access to environmental information

          Wilson Center talk – Environmental Information: The Roles of Experts and the Public

          Posted on by

          On 29th April, I gave a talk in the Wilson Center in Washington DC on ‘Environmental Information – the Roles of Experts and the Public‘. The event was organised by Lea Shanley, who is heading the ‘Commons Lab‘ initiative of the center, and Dr Jay Benforado, from the US Environment Protection Agency (EPA) provided a […]

          Continue reading »
          Aarhus convention, citizen science, Environmental information, GIS, Papers, Principle 10, public access to environmental information

          Special Sessions on GeoComputation @ NARSC

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          –>

          Second Call for participation
          Special Sessions on GeoComputation
          61st Annual North American Meetings of the Regional Science Association International NARSC – RSAI
          November 12-15, 2014, Washington, DC, USA
          The special sessions on various aspects of GeoComputation are planned for the North American Meetings of the Regional Science Association International (NARSC) to be held in Washington DC, USA, November 12-15, 2014. Suitable topics for the session presentations are theoretical, methodological and applied issues related to GeoComputation – spatial analysis and modeling, and in the context of regional science.
          Please let us know if you are interested to contribute to the special session(s) by sending an email at <suzanad@sfu.ca> with the title, abstract, name of author(s), affiliations, contact details and the unique ID number at your earliest but not later than June 25th, 2014. The abstract should be 2,000 to 5,500 characters and spaces.
          Please note that in order to have your presentation included to the special session we do need the unique identification number (ID). The ID, or PIN, is a number included at the bottom of the confirmation email received following the submission of an abstract.
          Detailed information about the NARSC conference can be found at . Information about the submission process can be found at . Conference abstract submission deadline is July 1st, 2014.
          Looking forward to seeing you in Washington, DC.
          The organizers:
          Prof. Suzana Dragićević
          Department of Geography
          Simon Fraser University, Canada
          Email: suzanad@sfu.ca
          Prof. Andrew Crooks
          Department of Computational Social Science
          George Mason University, USA
          Email: acrooks2@gmu.edu
          Prof. Jean-Claude Thill
          Department of Geography and Earth Sciences
          University of North Carolina at Charlotte, USA
          Email: Jean-Claude.Thill@uncc.edu
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          ABM, GeoComputation, GIS

          Special Sessions on GeoComputation @ NARSC

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          Second Call for participation
          Special Sessions on GeoComputation
          61st Annual North American Meetings of the Regional Science Association International NARSC – RSAI
          November 12-15, 2014, Washington, DC, USA
          The special sessions on various aspects of GeoComputation are planned for the North American Meetings of the Regional Science Association International (NARSC) to be held in Washington DC, USA, November 12-15, 2014. Suitable topics for the session presentations are theoretical, methodological and applied issues related to GeoComputation – spatial analysis and modeling, and in the context of regional science.
          Please let us know if you are interested to contribute to the special session(s) by sending an email at <suzanad@sfu.ca> with the title, abstract, name of author(s), affiliations, contact details and the unique ID number at your earliest but not later than June 25th, 2014. The abstract should be 2,000 to 5,500 characters and spaces.
          Please note that in order to have your presentation included to the special session we do need the unique identification number (ID). The ID, or PIN, is a number included at the bottom of the confirmation email received following the submission of an abstract.
          Detailed information about the NARSC conference can be found at . Information about the submission process can be found at . Conference abstract submission deadline is July 1st, 2014.
          Looking forward to seeing you in Washington, DC.
          The organizers:
          Prof. Suzana Dragićević
          Department of Geography
          Simon Fraser University, Canada
          Email: suzanad@sfu.ca
          Prof. Andrew Crooks
          Department of Computational Social Science
          George Mason University, USA
          Email: acrooks2@gmu.edu
          Prof. Jean-Claude Thill
          Department of Geography and Earth Sciences
          University of North Carolina at Charlotte, USA
          Email: Jean-Claude.Thill@uncc.edu
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          ABM, GeoComputation, GIS
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