DOCSLIB.ORG

METEOR: Protocols for Crowd- Sourcing Regional Exposure Data

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
METEOR: Protocols for Crowd- Sourcing Regional Exposure Data METEOR: Protocols for Crowd-Sourcing Regional Exposure Data Report Number: M4.3/P 11 February 2019 Author: M. O’Hara METEOR: Protocols for Crowd-Sourcing Regional Exposure Data Document Verification Project METEOR: Modelling Exposure Through Earth Observation Routines Report Title METEOR: Protocols for Crowd-Sourcing Regional Exposure Data Related Milestone M4.3 Reference as M. O’Hara (2019) Protocols for Crowd-Sourcing Regional Exposure Data. METEOR Report 4.3/P Release Type Public / Confidential / Confidential with Embargo Period Prepared by: Contributors Name(s): Signature(s): Date(s): M. O’Hara 11 February 2019 Approved by: Project Manager Name: Signature: Date: K. Smith 12 February 2019 Approved by: UKSA IPP Project Officer Name: Signature: Date: Date Version Alterations Editor i METEOR: Protocols for Crowd-Sourcing Regional Exposure Data Abbreviations Acronym Full Text Description BGS British Geological An organisation providing expert advice in all areas of Survey geoscience to the UK government and internationally DE Data Entry DMD Disaster Management Prime Minister's Office of Tanzania focused on disaster Department risk DRM Disaster Risk Management DRR Disaster Risk Reduction EO Earth Observation FATHOM Provides innovative flood modelling and analytics, based on extensive flood risk research GED4ALL Global Exposure Database for All GEM Global Earthquake Non-profit organisation focused on the pursuit of Model earthquake resilience worldwide GFDRR Global Facility for Disaster Reduction and Recovery GIS Geographic Information System GPS Global Positioning System HOT Humanitarian A global non-profit organisation the uses collaborative OpenStreetMap Team technology to create OSM maps for areas affected by disasters InaSAFE Free open software that produces realistic natural hazard impact scenarios for better planning, preparedness and response activities ii METEOR: Protocols for Crowd-Sourcing Regional Exposure Data Acronym Full Text Description ImageCat International risk management innovation company supporting the global risk and catastrophe management needs of the insurance industry, governments and NGOs IPP International Partnership Programme JOSM Java OpenStreetMap Free Java software desktop editing tool for OSM data KLL Kathmandu Living Labs Mapathon Coordinated mapping event where individuals learn about OSM, and make edits to the map through remote digitising of satellite imagery METEOR Modelling Exposure Through Earth Observation Routines NGO Non Government Organisation NSET National Society for Non-governmental organisation working on reducing Earthquake earthquake risk in Nepal and abroad Technology OCHA UN Office for the Coordination of Humanitarian Affairs ODA Official Development Assistance ODbL Open Database License ODK OpenDataKit Mobile application questionnaire form for collecting data OFDA USAID Office of United States Foreign Disaster Assistance iii METEOR: Protocols for Crowd-Sourcing Regional Exposure Data Acronym Full Text Description OMK OpenMapKit Mobile application that works with ODK to collect data in OSM OPM Oxford Policy Organisation focused on sustainable project design and Management implementation for reducing social and economic disadvantage in low-income countries OSM OpenStreetMap A collaborative project to create a free and open editable map database of the world OSMCha OpenStreetMap Changeset Analyzer OSMF OpenStreetMap Foundation Osmose OpenStreetMap Oversight Search Engine PDC Pacific Disaster Center POSM Portable Physical server that contains a set of OSM tools OpenStreetMap QA Quality Assurance QGIS Free open source desktop geographic information system Ramani Huria A community mapping project based in Dar Es Salaam, Tanzania SDGs Sustainable Development Goals TS Team Supervisor UAV Unmanned Aerial Vehicle UKSA United Kingdom Space Agency UN United Nations iv METEOR: Protocols for Crowd-Sourcing Regional Exposure Data Acronym Full Text Description USAID United States Agency for International Development WASH Water, Sanitation and Hygiene WP Work Package v METEOR: Protocols for Crowd-Sourcing Regional Exposure Data Contents DOCUMENT VERIFICATION ............................................................................................................................... I ABBREVIATIONS .............................................................................................................................................. II 1. INTRODUCTION ....................................................................................................................................... 1 1.1. PROJECT SUMMARY .................................................................................................................................... 1 1.2. PROJECT OVERVIEW ................................................................................................................................... 1 1.3. PROJECT OBJECTIVES .................................................................................................................................. 1 1.4. WORK PACKAGES ....................................................................................................................................... 2 1.5. IN-SITU INPUTS AND VALIDATION .................................................................................................................. 3 2. OPENSTREETMAP .................................................................................................................................... 5 2.1. WHAT IS IT? ............................................................................................................................................. 5 2.2. OPEN DATA .............................................................................................................................................. 5 2.3. DATA STRUCTURE ...................................................................................................................................... 6 2.4. WHY USE IT? ............................................................................................................................................. 6 3. PARTICIPATORY MAPPING ...................................................................................................................... 8 4. DATA CREATION .................................................................................................................................... 10 4.1. IMPORT EXISTING DATA ............................................................................................................................ 10 4.2. REMOTE DIGITISATION .............................................................................................................................. 11 4.3. GROUND DATA COLLECTION ...................................................................................................................... 12 5. CROWD-SOURCING EXPOSURE DATA .................................................................................................... 13 5.1. OVERVIEW .............................................................................................................................................. 13 5.2. DATA MODEL .......................................................................................................................................... 13 5.3. TEAM STRUCTURE .................................................................................................................................... 16 5.4. DATA COLLECTION ................................................................................................................................... 18 5.4.1. OpenDataKit ............................................................................................................................... 19 5.4.2. OpenMapKit ............................................................................................................................... 20 5.4.3. Field Papers ................................................................................................................................ 21 5.4.4. GPS Units .................................................................................................................................... 23 5.4.5. Maps.Me .................................................................................................................................... 24 5.5. DIVIDING THE AREA .................................................................................................................................. 26 5.6. DATA MANAGEMENT ................................................................................................................................ 29 5.7. DATA WORKFLOW ................................................................................................................................... 31 5.8. DATA VALIDATION .................................................................................................................................... 32 vi METEOR: Protocols for Crowd-Sourcing Regional Exposure Data 5.9. DATA QUALITY ........................................................................................................................................ 35 6. EXTRACTING DATA ................................................................................................................................ 38 7. SUSTAINABILITY ...................................................................................................................................
Load more

Recommended publications
  • Osmand - This Article Describes How to Use Key Feature
    HowToArticles - osmand - This article describes how to use key feature... http://code.google.com/p/osmand/wiki/HowToArticles#First_steps [email protected] | My favorites ▼ | Profile | Sign out osmand Navigation & routing based on Open Street Maps for Android devices Project Home Downloads Wiki Issues Source Search for ‹‹ HowToArticles HowTo Articles This article describes how to use key features How To First steps Featured How To Understand vector en, ru Updated and raster maps How To Download data How To Find on map Introduction How To Filter POI This articles helps you to understand how to use the application, and gives you idea's about how the functionality could be used. How To Customize map view How To How To Arrange layers and overlays How To Manage favorite How To First steps places How To Navigate to point First you can think about which features are most usable and suitable for you. You can use Osmand online and offline for How To Use routing displaying a lot of online maps, pre-downloaded very compact so-called OpenStreetMap "vector" map-files. You can search and How To Use voice routing find adresses, places of interest (POI) and favorites, you can find routes to navigate with car, bike and by foot, you can record, How To Limit internet replay and follow selfcreated or downloaded GPX tracks by foot and bike. You can find Public Transport stops, lines and even usage shortest public transport routes!. You can use very expanded filter options to show and find POI's. You can share your position with friends by mail or SMS text-messages.
    [Show full text]
  • A Review of Openstreetmap Data Peter Mooney* and Marco Minghini† *Department of Computer Science, Maynooth University, Maynooth, Co
    CHAPTER 3 A Review of OpenStreetMap Data Peter Mooney* and Marco Minghini† *Department of Computer Science, Maynooth University, Maynooth, Co. Kildare, Ireland, [email protected] †Department of Civil and Environmental Engineering, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy Abstract While there is now a considerable variety of sources of Volunteered Geo- graphic Information (VGI) available, discussion of this domain is often exem- plified by and focused around OpenStreetMap (OSM). In a little over a decade OSM has become the leading example of VGI on the Internet. OSM is not just a crowdsourced spatial database of VGI; rather, it has grown to become a vast ecosystem of data, software systems and applications, tools, and Web-based information stores such as wikis. An increasing number of developers, indus- try actors, researchers and other end users are making use of OSM in their applications. OSM has been shown to compare favourably with other sources of spatial data in terms of data quality. In addition to this, a very large OSM community updates data within OSM on a regular basis. This chapter provides an introduction to and review of OSM and the ecosystem which has grown to support the mission of creating a free, editable map of the whole world. The chapter is especially meant for readers who have no or little knowledge about the range, maturity and complexity of the tools, services, applications and organisations working with OSM data. We provide examples of tools and services to access, edit, visualise and make quality assessments of OSM data. We also provide a number of examples of applications, such as some of those How to cite this book chapter: Mooney, P and Minghini, M.
    [Show full text]
  • Assessing the Credibility of Volunteered Geographic Information: the Case of Openstreetmap
    ASSESSING THE CREDIBILITY OF VOLUNTEERED GEOGRAPHIC INFORMATION: THE CASE OF OPENSTREETMAP BANI IDHAM MUTTAQIEN February, 2017 SUPERVISORS: Dr. F.O. Ostermann Dr. ir. R.L.G. Lemmens ASSESSING THE CREDIBILITY OF VOLUNTEERED GEOGRAPHIC INFORMATION: THE CASE OF OPENSTREETMAP BANI IDHAM MUTTAQIEN Enschede, The Netherlands, February, 2017 Thesis submitted to the Faculty of Geo-Information Science and Earth Observation of the University of Twente in partial fulfillment of the requirements for the degree of Master of Science in Geo-information Science and Earth Observation. Specialization: Geoinformatics SUPERVISORS: Dr. F.O. Ostermann Dr.ir. R.L.G. Lemmens THESIS ASSESSMENT BOARD: Prof. Dr. M.J. Kraak (Chair) Dr. S. Jirka (External Examiner, 52°North Initiative for Geospatial Open Source Software GmbH) DISCLAIMER This document describes work undertaken as part of a program of study at the Faculty of Geo-Information Science and Earth Observation of the University of Twente. All views and opinions expressed therein remain the sole responsibility of the author, and do not necessarily represent those of the Faculty. ABSTRACT The emerging paradigm of Volunteered Geographic Information (VGI) in the geospatial domain is interesting research since the use of this type of information in a wide range of applications domain has grown extensively. It is important to identify the quality and fitness-of-use of VGI because of non- standardized and crowdsourced data collection process as well as the unknown skill and motivation of the contributors. Assessing the VGI quality against external data source is still debatable due to lack of availability of external data or even uncomparable. Hence, this study proposes the intrinsic measure of quality through the notion of credibility.
    [Show full text]
  • Navegação Turn-By-Turn Em Android Relatório De Estágio Para A
    INSTITUTO POLITÉCNICO DE COIMBRA INSTITUTO SUPERIOR DE ENGENHARIA DE COIMBRA Navegação Turn-by-Turn em Android Relatório de estágio para a obtenção do grau de Mestre em Informática e Sistemas Autor Luís Miguel dos Santos Henriques Orientação Professor Doutor João Durães Professor Doutor Bruno Cabral Mestrado em Engenharia Informática e Sistemas Navegação Turn-by-Turn em Android Relatório de estágio apresentado para a obtenção do grau de Mestre em Informática e Sistemas Especialização em Desenvolvimento de Software Autor Luís Miguel dos Santos Henriques Orientador Professor Doutor João António Pereira Almeida Durães Professor do Departamento de Engenharia Informática e de Sistemas Instituto Superior de Engenharia de Coimbra Supervisor Professor Doutor Bruno Miguel Brás Cabral Sentilant Coimbra, Fevereiro, 2019 Agradecimentos Aos meus pais por todo o apoio que me deram, Ao meu irmão pela inspiração, À minha namorada por todo o amor e paciência, Ao meu primo, por me fazer acreditar que nunca é tarde, Aos meus professores por me darem esta segunda oportunidade, A todos vocês devo o novo rumo da minha vida. Obrigado. i ii Abstract This report describes the work done during the internship of the Master's degree in Computer Science and Systems, Specialization in Software Development, from the Polytechnic of Coimbra - ISEC. This internship, which began in October 17 of 2017 and ended in July 18 of 2018, took place in the company Sentilant, and had as its main goal the development of a turn-by- turn navigation module for a logistics management application named Drivian Tasks. During the internship activities, a turn-by-turn navigation module was developed from scratch, while matching the specifications indicated by the project managers in the host entity.
    [Show full text]
  • Free Your Android! Not Free As in Free Beer About the FSFE This flyer Was Printed by the Free Software You Don't Have to Pay for the Apps from F-Droid
    Free as in Freedom Free Your Android! Not Free as in Free Beer About the FSFE This flyer was printed by the Free Software You don't have to pay for the apps from F-Droid. A lot Foundation Europe (FSFE), a non-profit organi- of applications from Google Play or Apple's App Store sation dedicated to promoting Free Software Get a are also free of charge. However, Free Software is not and working to build a free digital society. about price, but liberty. Free App Store Access to software de- When you don't control a program, the program termines how we can take for Your Android controls you. Whoever controls the software therefore part in our society. There- controls you. fore, FSFE is dedicated to ensure equal access and For example, nobody is allowed to study how a non- participation in the infor- free app works and what it actually does on your mation age by fighting for phone. Sometimes it just doesn't do exactly what you digital freedom. want, but there are also apps that contain malicious features like leaking your data without your knowledge. Nobody should ever be forced to use software that does not grant the freedoms to use, Running exclusively Free Software on your device puts study, share and improve the software. You you in full control. Even though you may not have the should have the right to shape technology as skills to directly exercise all of your freedom, you you see fit. benefit from a vibrant community that is enabled by freedom and uses it collaboratively.
    [Show full text]
  • Implementazione Dell'accessibilità in Opentripplanner
    ALMA MATER STUDIORUM – UNIVERSITÀ DI BOLOGNA CAMPUS DI CESENA SCUOLA DI SCIENZE CORSO DI LAUREA IN SCIENZE E TECNOLOGIE INFORMATICHE Implementazione dell’accessibilità in OpenTripPlanner Relazione finale in Tecnologie Web Relatore Presentata da Dott.ssa Paola Salomoni Stefano Nicoletti Correlatore Dott.ssa Catia Prandi Sessione III Anno Accademico 2014/2015 Indice Indice INDICE .................................................................................................................. I INTRODUZIONE .................................................................................................... 1 1 ACCESSIBLE WEB E ACCESSIBLE MAP ..................................................... 5 1.1 ACCESSIBLE WEB .............................................................................................. 5 1.1.1 Definizione .............................................................................................. 6 1.1.2 Standard ISO ........................................................................................... 8 1.1.3 Linee guida e leggi .................................................................................. 8 1.2 ACCESSIBLE MAP ............................................................................................ 12 1.2.1 Background ........................................................................................... 13 1.2.2 Temi e target .......................................................................................... 14 1.2.3 Tecniche per rendere le mappe accessibili ..........................................
    [Show full text]
  • Arxiv:2008.02653V2 [Cs.CY] 12 Oct 2020 P a Fteerpa Commission
    OPENSTREETMAP DATA USE CASES DURING THE EARLY MONTHS OF THE COVID-19 PANDEMIC A PREPRINT SUBMITTED TO THE UN GGIM EDITED VOLUME: COVID-19: GEOSPATIAL INFORMATION AND COMMUNITY RESILIENCE Peter Mooney A. Yair Grinberger Department of Computer Science Department of Geography Maynooth University, Ireland Hebrew University of Jerusalem, Israel [email protected] [email protected] Marco Minghini∗ Digital Economy Unit European Commission, Joint Research Centre, Italy [email protected] Serena Coetzee Levente Juhasz Department of Geography, Geoinformatics and Meteorology GIS Center University of Pretoria, South Africa Florida International University, USA [email protected] [email protected] Godwin Yeboah Institute for Global Sustainable Development University of Warwick, UK [email protected] October 13, 2020 Abstract arXiv:2008.02653v2 [cs.CY] 12 Oct 2020 Created by volunteers since 2004, OpenStreetMap (OSM) is a global geographic database available under an open access license and currently used by a multitude of actors worldwide. This chapter describes the role played by OSM during the early months (from January to July 2020) of the ongoing COVID-19 pandemic, which - in contrast to past disasters and epidemics - is a global event impacting both developed and developing countries. A large number of COVID-19-related OSM use cases were collected and grouped into a number of research frameworks which are analyzed separately: dashboards and services simply using OSM as a basemap, applications using raw OSM data, initiatives to collect new OSM data, imports of authoritative data into OSM, and traditional academic research on OSM in the COVID-19 response.
    [Show full text]
  • Eliza Shrestha
    Data Validation and Quality Assessment of Voluntary Geographic Information Road Network of Castellon for Emergency Route Planning Eliza Shrestha I Data Validation and Quality Assessment of Voluntary Geographic Information Road Network of Castellon for Emergency Route Planning Dissertation supervised by Francisco Ramos, PhD Associate Professor, Institute of New Imaging Technologies, Universitat Jaume I, Castellón, Spain Co-supervised by Andres Muñoz Researcher, Institute of New Imaging Technologies Universitat Jaume I Castellón, Spain Pedro Cabral, PhD Associate Professor, Sistemas e Tecnologias da Informação Informação Universidade Nova de Lisboa, Lisbon, Portugal February, 2019 II ACKNOWLEDGEMENT I would like to express my deep gratitude to my supervisor and co-supervisor Prof. Francisco Ramos, Andres Muñoz and Pedro Cabral for supervising my research work. I am highly obliged to Andres Muñoz for his continuous guidance during the course of the project. I am grateful to the Erasmus Mundus program for providing the scholarship to pursue my Masters in Geospatial Technologies. It has been a huge opportunity to be part of the program and gain knowledge from highly skilled professors and study with cooperative friends from all around the world. Apart from professors and friends, I would like to thank the administrative staff for their help throughout the study period. Also, I am grateful to the Survey Department, Government of Nepal for providing study leave to pursue my study. I would like to acknowledge all the enthusiastic volunteers who participated and contributed to the project. Without their help, the project would not have been able to complete. The research would be impossible without the help of my marvelous friends who have been encouraging me throughout the journey.
    [Show full text]
  • Generating Up-To-Date and Detailed Land Use and Land Cover Maps Using Openstreetmap and Globeland30
    International Journal of Geo-Information Article Generating Up-to-Date and Detailed Land Use and Land Cover Maps Using OpenStreetMap and GlobeLand30 Cidália Costa Fonte 1,2,*, Marco Minghini 3, Joaquim Patriarca 2, Vyron Antoniou 4,5, Linda See 6 and Andriani Skopeliti 7 1 Department of Mathematics, University of Coimbra, Largo D. Dinis, 3001-501 Coimbra, Portugal 2 INESC Coimbra, Rua Sílvio Lima, Pólo II, 3030-290 Coimbra, Portugal; [email protected] 3 Department of Civil and Environmental Engineering, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy; [email protected] 4 Hellenic Military Academy, Leof. Varis—Koropiou, 16673 Vari, Greece; [email protected] 5 Hellenic Military Geographical Service, 4, Evelpidon Str., 11362 Athens, Greece 6 International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, A2361 Laxenburg, Austria; [email protected] 7 School of Rural and Surveying Engineering, National Technical University of Athens, 9 H. Polytechniou, 15780 Zografou, Greece; [email protected] * Correspondence: [email protected]; Tel.: +351-239-791-150 Academic Editor: Wolfgang Kainz Received: 4 March 2017; Accepted: 17 April 2017; Published: 22 April 2017 Abstract: With the opening up of the Landsat archive, global high resolution land cover maps have begun to appear. However, they often have only a small number of high level land cover classes and they are static products, corresponding to a particular period of time, e.g., the GlobeLand30 (GL30) map for 2010. The OpenStreetMap (OSM), in contrast, consists of a very detailed, dynamically updated, spatial database of mapped features from around the world, but it suffers from incomplete coverage, and layers of overlapping features that are tagged in a variety of ways.
    [Show full text]
  • Quantifying Gendered Participation in Openstreetmap: Responding to Theories of Female (Under) Representation in Crowdsourced Mapping
    GeoJournal https://doi.org/10.1007/s10708-019-10035-z (0123456789().,-volV)(0123456789().,-volV) Quantifying gendered participation in OpenStreetMap: responding to theories of female (under) representation in crowdsourced mapping Z. Gardner . P. Mooney . S. De Sabbata . L. Dowthwaite Ó The Author(s) 2019 Abstract This paper presents the results of an gender of 293 OSM users. Statistics relating to users’ exploratory quantitative analysis of gendered contri- editing and tagging behaviours openly accessible via butions to the online mapping project OpenStreetMap the ‘how did you contribute to OSM’ wiki page were (OSM), in which previous research has identified a subsequently analysed. The results reveal that vol- strong male participation bias. On these grounds, umes of overall activity as well editing and tagging theories of representation in volunteered geographic actions in OSM remain significantly dominated by information (VGI) have argued that this kind of men. They also indicate subtle but impactful differ- crowdsourced data fails to embody the geospatial ences in men’s and women’s preferences for modify- interests of the wider community. The observed ing and creating data, as well as the tagging categories effects of the bias however, remain conspicuously to which they contribute. Discourses of gender and absent from discourses of VGI and gender, which ICT, gender relations in online VGI environments and proceed with little sense of impact. This study competing motivational factors are implicated in these addresses this void by analysing OSM contributions observations. As well as updating estimates of the by gender and thus identifies differences in men’s and gender participation bias in OSM, this paper aims to women’s mapping practices.
    [Show full text]
  • Nathalie Gravel | 2013
    AMÉLIORATION DE LA CARTOGRAPHIE WEB, SUPPORT À LA RECHERCHE ET CRÉATION D'OUTILS D'ANALYSES EN SÉCURITÉ ROUTIÈRE AU MINISTÈRE DES TRANSPORTS — DIRECTION DE L’OUEST-DE-LA-MONTÉRÉGIE RAPPORT DE STAGE PRÉSENTÉ COMME EXIGENCE PARTIELLE DE LA MAÎTRISE EN GÉOGRAPHIE À L'INTENTION DE MÉLANIE DOYON PROFESSEUR-TUTEUR DE L’UNIVERSITÉ DU QUÉBEC À MONTRÉAL PAR NATHALIE GRAVEL ÉTÉ 2013 UNIVERSITÉ DU QUÉBEC À MONTRÉAL MARCEL BEAUDOIN, SUPERVISEUR DE STAGE ET COORDONNATEUR DE L'ÉQUIPE DE GÉOMATIQUE — PRÉVENTION EN SÉCURITÉ ROUTIÈRE RAPPORT DE STAGE PRÉSENTÉ COMME EXIGENCE PARTIELLE DE LA MAÎTRISE EN GÉOGRAPHIE À L'INTENTION DE MÉLANIE DOYON PROFESSEUR-TUTEUR DE L’UNIVERSITÉ DU QUÉBEC À MONTRÉAL PAR NATHALIE GRAVEL DANS LE CADRE DU COURS STAGE EN MILIEU DE PROFESSIONNEL GEO8825 ÉTÉ 2013 RÉSUMÉ Ce rapport vous informera sur les objectifs du stage réalisé au Ministère du Transport à la direction de l'Ouest-de-la-Montérégie durant les mois de mai à août 2013. Vous y trouverez aussi une description du ministère, une brève description des projets réalisés ainsi que des réflexions personnelles sur le stage. La majorité des livrables effectués pendant le stage seront disponibles en annexe. Principalement, trois projets ont été réalisés pendant ce stage. Le premier, l'amélioration des Outils cartographiques, est un site de cartographie interactive sur le web accessible aux employés du ministère conçu avec les logiciels libres MapServer et OpenLayers sur un serveur Apache. Le deuxième est une application pour la préparation du fichier d'accidents par intersections en MapBasic qui fonctionne dans MapInfo. Cette application automatise les traitements des fichiers d'accidents et d'intersection afin d'avoir un fichier des fréquences d'accidents par intersection pour les différents types de code d'impact et de facteurs d'accidents du fichier d'accident de la Société de l’assurance automobile du Québec (SAAQ).
    [Show full text]
  • Master Thesis Understanding Mapswipe
    Ruprecht-Karls-Universität Heidelberg Geographisches Institut Master Thesis Understanding MapSwipe: Analysing Data Quality of Crowdsourced Classifications on Human Settlements Benjamin Herfort Matrikel-Nr. 3040449 Supervisors: Prof. Dr. Alexander Zipf Prof. Dr. João Porto de Albuquerque 20.10.2017 Content Content Content ................................................................................................................................. I List of Figures .................................................................................................................... IV List of Tables ...................................................................................................................... V List of Abbreviations ......................................................................................................... VI Abstract ............................................................................................................................ VII 1 Introduction .................................................................................................................. 1 2 Related Works .............................................................................................................. 5 2.1 Crowdsourcing Geographic Information .............................................................. 5 2.1.1 Classification.................................................................................................. 5 2.1.2 Digitization ...................................................................................................
    [Show full text]