Tag: Twitter

#30DayMapChallenge Round-Up Part 1: Germany Three Ways

Featured Image: The peaks of Germany identified by curvature in N/E direction, Jakob Schnell’s contribution for Day 7 (Raster) of the #30DayMapChallenge. This past November, our teams at HeiGIT and GIScience participated in Topi Tjukanov’s Twitter event #30DayMapChallenge, where mappers display their creativity and ingenuity with a set of 30 daily prompts ranging from colors to…

2023-05-22
Social-Media-Daten für eine bessere Routenplanung freier Navigationsdienste

Heidelberger Geoinformatiker machen im Projekt „SocialMedia2Traffic“ geokodierte Informationen nutzbar Navigationsdienste benötigen aktuelle Verkehrsinformationen, um geeignete Routen zu ermitteln und die Fahrzeit möglichst genau zu berechnen. Dafür können nun auch frei zugängliche Daten aus Sozialen Medien und der Weltkarte OpenStreetMap genutzt werden. Ein entsprechendes System, mit dem sich aus ihnen die Verkehrsgeschwindigkeit abhängig von der Tageszeit…

2022-06-28
Join our final “SocialMedia2Traffic” project presentation on March 22

Navigation services need time dependent information on traffic speed to generate suitable routes and yield accurate travel time estimations. However, this information is not available free of cost globally. Within the recently completed project “SocialMedia2Traffic”, we have developed a system to model traffic speed of urban roads depending on the time of day based on…

2022-03-07
meinGrün, Tardur und SocialMedia2Traffic bei der mFUND Konferenz 2021

Letzte Woche konnten wir bei der digitalen mFUND Konferenz drei unserer Projekte einem interessierten Publikum vorstellen. Im Fachforum “Die „15-Minuten-Stadt“ datenbasiert ermöglichen” haben wir gezeigt, wie die meinGrün App, das meinGrün Webportal und die angegliederten Dienste Städte dabei unterstützen könnten, die Erreichbarkeit von öffentlichen Grünflächen zu verbessern. Dabei zeigten sich auch Anknüpfungspunkte zu weiteren mFUND…

2021-10-29
Social Sensing Workshop at GIScience Conference 2021

On Monday , Sep. 27 our “Social Sensing Workshop” at the “11th International Conference on GIScience” 2021 will take place. We are also happy to make you aware of full paper related to MeinGrün project and openrouteservice at the main conference that will be presented on Tuesday 13:30 CET in Session 3 “Mobility”: C. Ludwig, S.…

2021-09-27
OSM Missing Areas Identification paper is featured in August by ISPRS Journal of Photogrammetry and Remote Sensing

We are pleased that our article has been selected by the editors of ISPRS Journal of Photogrammetry and Remote Sensing as the featured Article in August 2020. This means it will be available open access for 1 year. Get your copy here and enjoy a nice summer reading: Li, H., B. Herfort, W. Huang, M. Zia,…

2020-08-17
Exploration of OpenStreetMap Missing Built-up Areas using Twitter Hierarchical Clustering and Deep Learning in Mozambique

Accurate and detailed geographical information digitizing human activity patterns plays an essential role in response to natural disasters. Volunteered geographical information, in particular OpenStreetMap (OSM), shows great potential in providing the knowledge of human settlements to support humanitarian aid, while often the availability and quality of OSM remains a major concern. The majority of existing…

2020-06-08
Methodological aspects of the spatial analysis of geosocial media feeds: from locations towards places

A new journal article about Methodological aspects of the spatial analysis of geosocial media feeds: from locations towards places has just been published in gis.science Vol 2 2019. It covers some main aspects and findings of the PhD Thesis of our team member Rene Westerholt (now at Warwick UK) and relates those to the analysis of place in…

2019-06-25
An approach for understanding human activity patterns with the motivations behind

A mechanistic understanding of human activity patterns lays a foundation for many applications. The majority of the current research aims to outline human activity patterns mainly from spatiotemporal perspectives (i.e., modeling human mobility patterns), lacking of understanding of the motivations behind behaviors. The aim of a recently published study is to model and understand human…

2018-12-11
Do people communicate about their whereabouts? Investigating the relation between user-generated text messages and Foursquare check-in places

The social functionality of places (e.g. school, restaurant) partly determines human behaviors and reflects a region’s functional configuration. Semantic descriptions of places are thus valuable to a range of studies of humans and geographic spaces. Assuming their potential impacts on human verbalization behaviors, one possibility is to link the functions of places to verbal representations…

2018-10-05
Jupyter Notebook: Combining Twitter Data and OpenRouteService Directions API

In the case of a disaster fast response is important and life saving. Information on blocked streets is crucial, but a the same time this infornations needs to be considered by routing engines in real-time. However, many routing engines use street network data which is at best updated once a week or even less often.…

2018-10-02
Presentation on VGI and society: inequalities, exclusions and power asymmetries of user generated geoinformation

This morning Georg Glasze and Thomas Bittner from Erlangen University gave a very interesting keynote talk on “VGI and society: inequalities, exclusions and power asymmetries of user generated geoinformation”. It was well received and lead to a lively discussion among the participants of the DFG SPP VGIscience Collaborative Research Week that is taking place this week…

2018-05-23