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148 Results Found

  • Article
  • Open Access
20 Citations
4,869 Views
20 Pages

Through volunteering data, people can help assess information on various aspects of their surrounding environment. Particularly in natural resource management, Volunteered Geographic Information (VGI) is increasingly recognized as a significant resou...

  • Feature Paper
  • Article
  • Open Access
4 Citations
3,445 Views
16 Pages

The primary objective of this study was to examine the quality of volunteered geographic information (VGI) data for flood mapping of Hurricane Harvey. As a crowdsourcing platform, the U-Flood project mapped flooded streets in the Houston metro area....

  • Article
  • Open Access
118 Citations
16,089 Views
24 Pages

Assessing Completeness and Spatial Error of Features in Volunteered Geographic Information

  • Steven P. Jackson,
  • William Mullen,
  • Peggy Agouris,
  • Andrew Crooks,
  • Arie Croitoru and
  • Anthony Stefanidis

The assessment of the quality and accuracy of Volunteered Geographic Information (VGI) contributions, and by extension the ultimate utility of VGI data has fostered much debate within the geographic community. The limited research to date has been fo...

  • Article
  • Open Access
9 Citations
5,505 Views
19 Pages

“Contextualized VGI” Creation and Management to Cope with Uncertainty and Imprecision

  • Gloria Bordogna,
  • Luca Frigerio,
  • Tomáš Kliment,
  • Pietro Alessandro Brivio,
  • Laure Hossard,
  • Giacinto Manfron and
  • Simone Sterlacchini

This paper investigates the causes of imprecision of the observations and uncertainty of the authors who create Volunteer Geographic Information (VGI), i.e., georeferenced contents generated by volunteers when participating in some citizen science pr...

  • Article
  • Open Access
34 Citations
10,488 Views
23 Pages

Towards a Protocol for the Collection of VGI Vector Data

  • Peter Mooney,
  • Marco Minghini,
  • Mari Laakso,
  • Vyron Antoniou,
  • Ana-Maria Olteanu-Raimond and
  • Andriani Skopeliti

A protocol for the collection of vector data in Volunteered Geographic Information (VGI) projects is proposed. VGI is a source of crowdsourced geographic data and information which is comparable, and in some cases better, than equivalent data from Na...

  • Article
  • Open Access
53 Citations
7,656 Views
25 Pages

Volunteered geographic information (VGI) has great potential to reveal spatial and temporal dynamics of geographic phenomena. However, a variety of potential biases in VGI are recognized, many of which root from volunteer data contribution activities...

  • Article
  • Open Access
8 Citations
2,913 Views
25 Pages

One of the most important challenges of volunteered geographic information (VGI) is the quality assessment. Existing methods of VGI quality assessment, either assess the quality by comparing a reference map with the VGI map or deriving the quality fr...

  • Article
  • Open Access
14 Citations
6,239 Views
16 Pages

19 September 2017

Volunteered geographic information (VGI) has been heralded as a promising new data source for urban planning and policymaking. However, there are also concerns surrounding uneven levels of participation and spatial coverage, despite the promotion of...

  • Article
  • Open Access
11 Citations
6,028 Views
26 Pages

Shared Data Sources in the Geographical Domain—A Classification Schema and Corresponding Visualization Techniques

  • Franz-Benjamin Mocnik,
  • Christina Ludwig,
  • A. Yair Grinberger,
  • Clemens Jacobs,
  • Carolin Klonner and
  • Martin Raifer

People share data in different ways. Many of them contribute on a voluntary basis, while others are unaware of their contribution. They have differing intentions, collaborate in different ways, and they contribute data about differing aspects. Shared...

  • Article
  • Open Access
31 Citations
6,465 Views
29 Pages

27 September 2018

Geographic information is a confluence of knowledge from spatial science, information technologies, engineering, and mathematics, etc. Effective spatial training can enhance achievement in science, technology, engineering, and mathematics (STEM) educ...

  • Article
  • Open Access
26 Citations
5,291 Views
31 Pages

Assessment and Visualization of OSM Consistency for European Cities

  • Dimitra Zacharopoulou,
  • Andriani Skopeliti and
  • Byron Nakos

Volunteered Geographic Information (VGI) is a widely used data source in various fields and services, such as environmental monitoring, disaster and crisis management, SDI, and mapping. Quality is a critical factor for the usability of VGI. This stud...

  • Article
  • Open Access
21 Citations
5,955 Views
23 Pages

Resilience in the urban context can be described as a continuum of absorptive, adaptive, and transformative capacities. The need to move toward a sustainable future and bounce forward after any disruption has led recent urban resilience initiatives t...

  • Article
  • Open Access
15 Citations
5,485 Views
11 Pages

6 February 2017

The aim of the paper is to map and evaluate the state of the multifunctional landscape of the municipality of Naples (Italy) and its surroundings, through a Spatial Decision-Making support system (SDSS) combining geographic information system (GIS) a...

  • Review
  • Open Access
121 Citations
23,176 Views
20 Pages

An Analysis of Geospatial Technologies for Risk and Natural Disaster Management

  • Luiz A. Manfré,
  • Eliane Hirata,
  • Janaína B. Silva,
  • Eduardo J. Shinohara,
  • Mariana A. Giannotti,
  • Ana Paula C. Larocca and
  • José A. Quintanilha

This paper discusses the use of spatial data for risk and natural disaster management. The importance of remote-sensing (RS), Geographic Information System (GIS) and Global Navigation Satellite System (GNSS) data is stressed by comparing studies of t...

  • Article
  • Open Access
4 Citations
2,701 Views
18 Pages

21 December 2023

Natural hazards such as wildfires have proven to be more frequent in recent years, and to minimize losses and activate emergency response, it is necessary to estimate their impact quickly and consequently identify the most affected areas. Volunteered...

  • Article
  • Open Access
28 Citations
5,922 Views
18 Pages

Quantifying Flood Water Levels Using Image-Based Volunteered Geographic Information

  • Yan-Ting Lin,
  • Ming-Der Yang,
  • Jen-Yu Han,
  • Yuan-Fong Su and
  • Jiun-Huei Jang

21 February 2020

Many people use smartphone cameras to record their living environments through captured images, and share aspects of their daily lives on social networks, such as Facebook, Instagram, and Twitter. These platforms provide volunteered geographic inform...

  • Article
  • Open Access
3 Citations
4,949 Views
37 Pages

Providing long-term data about the evolution of railway networks in Europe may help us understand how European Union (EU) member states behave in the long-term, and how they can comply with present EU recommendations. This paper proposes a methodolog...

  • Article
  • Open Access
19 Citations
10,825 Views
22 Pages

Guided Classification System for Conceptual Overlapping Classes in OpenStreetMap

  • Ahmed Loai Ali,
  • Nuttha Sirilertworakul,
  • Alexander Zipf and
  • Amin Mobasheri

The increased development of Volunteered Geographic Information (VGI) and its potential role in GIScience studies raises questions about the resulting data quality. Several studies address VGI quality from various perspectives like completeness, posi...

  • Article
  • Open Access
38 Citations
13,058 Views
27 Pages

A Spatial Data Infrastructure Integrating Multisource Heterogeneous Geospatial Data and Time Series: A Study Case in Agriculture

  • Gloria Bordogna,
  • Tomáš Kliment,
  • Luca Frigerio,
  • Pietro Alessandro Brivio,
  • Alberto Crema,
  • Daniela Stroppiana,
  • Mirco Boschetti and
  • Simone Sterlacchini

Currently, the best practice to support land planning calls for the development of Spatial Data Infrastructures (SDI) capable of integrating both geospatial datasets and time series information from multiple sources, e.g., multitemporal satellite dat...

  • Article
  • Open Access
233 Citations
47,895 Views
21 Pages

29 December 2011

The OpenStreetMap (OSM) project is a prime example in the field of Volunteered Geographic Information (VGI). Worldwide, several hundred thousand people are currently contributing information to the “free” geodatabase. However, the data contributions...

  • Article
  • Open Access
169 Citations
22,767 Views
26 Pages

11 November 2013

Due to financial or administrative constraints, access to official spatial base data is currently limited to a small subset of all potential users in the field of spatial planning and research. This increases the usefulness of Volunteered Geographic...

  • Article
  • Open Access
18 Citations
7,080 Views
29 Pages

Over the past few decades, geoportals have been considered as the key technological solutions for easy access to Earth observation (EO) products, and the implementation of spatial data infrastructure (SDI). However, less attention has been paid to de...

  • Article
  • Open Access
39 Citations
7,820 Views
21 Pages

The State of Mapillary: An Exploratory Analysis

  • Dawei Ma,
  • Hongchao Fan,
  • Wenwen Li and
  • Xuan Ding

As the world’s largest crowdsourcing-based street view platform, Mapillary has received considerable attention in both research and practical applications. By February 2019, more than 20,000 users worldwide contributed approximately 6.3 million...

  • Feature Paper
  • Article
  • Open Access
13 Citations
8,386 Views
21 Pages

While the effects of non-geographic aggregation on statistical inference are well studied in economics, research on the effects of geographic aggregation on regression analysis is rather scarce. This knowledge gap, together with the use of aggregated...

  • Article
  • Open Access
252 Citations
37,566 Views
20 Pages

The OpenStreetMap (OSM) project, founded in 2004, has gathered an exceptional amount of interest in recent years and counts as one of the most impressive sources of Volunteered Geographic Information (VGI) on the Internet. In total, more than half a...

  • Article
  • Open Access
39 Citations
7,600 Views
30 Pages

The success of university campuses depends on the interrelations between creative encounters and the built environment, conceptualised here as spatial affordances for creativity. Such an interface plays a fundamental role in interactions for knowledg...

  • Article
  • Open Access
52 Citations
14,386 Views
17 Pages

Monitoring and Assessing Post-Disaster Tourism Recovery Using Geotagged Social Media Data

  • Yingwei Yan,
  • Melanie Eckle,
  • Chiao-Ling Kuo,
  • Benjamin Herfort,
  • Hongchao Fan and
  • Alexander Zipf

Tourism is one of the most economically important industries. It is, however, vulnerable to disaster events. Geotagged social media data, as one of the forms of volunteered geographic information (VGI), has been widely explored to support the prevent...

  • Article
  • Open Access
27 Citations
7,015 Views
21 Pages

7 November 2020

To date, little is known about the spatial aspects of the creativity of university campuses and their public spaces. This study recognises that creativity is the fourth sustainability, because the spatial configuration of campuses and city-university...

  • Article
  • Open Access
24 Citations
6,733 Views
18 Pages

OpenStreetMap (OSM) is a free, open-access Volunteered geographic information (VGI) platform that has been widely used over the last decade as a source for Land Use Land Cover (LULC) mapping and visualization. However, it is known that the spatial co...

  • Article
  • Open Access
84 Citations
10,610 Views
25 Pages

In recent years, pluvial floods caused by extreme rainfall events have occurred frequently. Especially in urban areas, they lead to serious damages and endanger the citizens’ safety. Therefore, real-time information about such events is desirable. Wi...

  • Article
  • Open Access
12 Citations
4,987 Views
12 Pages

Data literacy is an essential skill for today’s digital way of life, to be able to judge the reliability of different data presented, for instance in news and media or in business processes. Geo-Spatial data are a specific kind of data and infl...

  • Article
  • Open Access
9 Citations
5,656 Views
17 Pages

Geographic information has been traditionally produced by mapping agencies and corporations, using highly skilled professionals as well as expensive precision equipment and procedures, in a very costly approach. The production of land use and land co...

  • Article
  • Open Access
12 Citations
5,363 Views
22 Pages

The problem of discovering regions that support particular functionalities in an urban setting has been approached in literature using two general methodologies: top-down, encoding expert knowledge on urban planning and design and discovering regions...

  • Article
  • Open Access
20 Citations
6,106 Views
31 Pages

19 October 2020

This paper tests an automated methodology for generating training data from OpenStreetMap (OSM) to classify Sentinel-2 imagery into Land Use/Land Cover (LULC) classes. Different sets of training data were generated and used as inputs for the image cl...

  • Article
  • Open Access
15 Citations
5,528 Views
34 Pages

Digital Citizen Science for Responding to COVID-19 Crisis: Experiences from Iran

  • Hossein Vahidi,
  • Mohammad Taleai,
  • Wanglin Yan and
  • Rajib Shaw

The Coronavirus Disease 2019 (COVID-19) pandemic has so far been the most severe global public health emergency in this century. Generally, citizen science can provide a complement to authoritative scientific practices for responding to this highly c...

  • Article
  • Open Access
10 Citations
9,355 Views
20 Pages

Virtual Restaurants: Customer Experience Keeps Their Businesses Alive

  • Maria I. Klouvidaki,
  • Nikos Antonopoulos,
  • Georgios D. Styliaras and
  • Andreas Kanavos

15 July 2023

Due to COVID-19 restrictions, many restaurants were forced to discontinue in-person service, either by locking down or finding alternative methods of operation. Despite the fact that, in the United States of America, digital restaurants have already...

  • Article
  • Open Access
19 Citations
6,960 Views
17 Pages

Promoting Crowdsourcing for Urban Research: Cycling Safety Citizen Science in Four Cities

  • Colin Ferster,
  • Trisalyn Nelson,
  • Karen Laberee,
  • Ward Vanlaar and
  • Meghan Winters

People generate massive volumes of data on the Internet about cities. Researchers may engage these crowds to fill data gaps and better understand and inform planning decisions. Crowdsourced tools for data collection must be supported by outreach; how...

  • Article
  • Open Access
85 Citations
20,921 Views
18 Pages

Towards Automatic Vandalism Detection in OpenStreetMap

  • Pascal Neis,
  • Marcus Goetz and
  • Alexander Zipf

22 November 2012

The OpenStreetMap (OSM) project, a well-known source of freely available worldwide geodata collected by volunteers, has experienced a consistent increase in popularity in recent years. One of the main caveats that is closely related to this popularit...

  • Article
  • Open Access
23 Citations
7,983 Views
19 Pages

Capturing Flood Risk Perception via Sketch Maps

  • Carolin Klonner,
  • Tomás J. Usón,
  • Sabrina Marx,
  • Franz-Benjamin Mocnik and
  • Bernhard Höfle

The fact that an increasing number of people and local authorities are affected by natural hazards, especially floods, highlights the necessity of adequate mitigation and preparedness within disaster management. Many governments, though, have only in...

  • Article
  • Open Access
17 Citations
9,385 Views
25 Pages

The Geography of Taste: Using Yelp to Study Urban Culture

  • Sohrab Rahimi,
  • Sam Mottahedi and
  • Xi Liu

This study aims to put forth a new method to study the sociospatial boundaries by using georeferenced community-authored reviews for restaurants. In this study, we show that food choice, drink choice, and restaurant ambience can be good indicators of...

  • Article
  • Open Access
20 Citations
10,432 Views
18 Pages

A Citizen Science Approach for Collecting Toponyms

  • Aji Putra Perdana and
  • Frank O. Ostermann

The emerging trends and technologies of surveying and mapping potentially enable local experts to contribute and share their local geographical knowledge of place names (toponyms). We can see the increasing numbers of toponyms in digital platforms, s...

  • Article
  • Open Access
25 Citations
5,545 Views
12 Pages

Increasing the Accuracy of Crowdsourced Information on Land Cover via a Voting Procedure Weighted by Information Inferred from the Contributed Data

  • Giles Foody,
  • Linda See,
  • Steffen Fritz,
  • Inian Moorthy,
  • Christoph Perger,
  • Christian Schill and
  • Doreen Boyd

Simple consensus methods are often used in crowdsourcing studies to label cases when data are provided by multiple contributors. A basic majority vote rule is often used. This approach weights the contributions from each contributor equally but the c...

  • Article
  • Open Access
23 Citations
11,791 Views
23 Pages

Areal Delineation of Home Regions from Contribution and Editing Patterns in OpenStreetMap

  • Dennis Zielstra,
  • Hartwig H. Hochmair,
  • Pascal Neis and
  • Francesco Tonini

3 November 2014

The type of data an individual contributor adds to OpenStreetMap (OSM) varies by region. The local knowledge of a data contributor allows for the collection and editing of detailed features such as small trails, park benches or fire hydrants, as well...

  • Article
  • Open Access
13 Citations
8,797 Views
22 Pages

Hybrid 3D Rendering of Large Map Data for Crisis Management

  • David Tully,
  • Abdennour El Rhalibi,
  • Christopher Carter and
  • Sud Sudirman

In this paper we investigate the use of games technologies for the research and the development of 3D representations of real environments captured from GIS information and open source map data. Challenges involved in this area concern the large data...

  • Article
  • Open Access
40 Citations
11,048 Views
27 Pages

Point-of-Interest (POI) Data Validation Methods: An Urban Case Study

  • Lih Wei Yeow,
  • Raymond Low,
  • Yu Xiang Tan and
  • Lynette Cheah

Point-of-interest (POI) data from map sources are increasingly used in a wide range of applications, including real estate, land use, and transport planning. However, uncertainties in data quality arise from the fact that some of this data are crowds...

  • Technical Note
  • Open Access
17 Citations
4,989 Views
12 Pages

The present study provides a simplified framework verifying the degree of coverage and completeness of settlement maps derived from the OpenStreetMap (OSM) database at the national scale, with a possible use in official statistics. Measuring the comp...

  • Article
  • Open Access
14 Citations
4,700 Views
15 Pages

Volunteer-contributed geographic data (VGI) is an important source of geospatial big data that support research and applications. A major concern on VGI data quality is that the underlying observation processes are inherently biased. Detecting observ...

  • Article
  • Open Access
45 Citations
12,376 Views
15 Pages

4 December 2014

Volunteered geographic information (VGI) is geographic information collected by way of crowdsourcing. However, the distinction between VGI as an information product and the processes that create VGI is blurred. Clearly, the environment that influence...

  • Article
  • Open Access
1 Citations
1,572 Views
17 Pages

1 August 2023

The latest advances in spatial information technology have led to the emergence of Volunteered Geographic Information (VGI) as enrichment to existing spatial data sources. Additionally, Decision Support Systems (DSS) are among the fields that have se...

  • Article
  • Open Access
26 Citations
6,978 Views
19 Pages

A Spatio-Temporal VGI Model Considering Trust-Related Information

  • Yijiang Zhao,
  • Xiaoguang Zhou,
  • Guangqiang Li and
  • Hanfa Xing

Over the past several years, volunteered geographic information (VGI) has expanded rapidly. VGI collection has been proven to serve as a highly successful means of acquiring timely and detailed global spatial data. However, VGI includes several speci...

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