Tag: Crowd Analyser

New ways in analysing multi-scale datasets

Many user-generated datasets (e.g., social media) reflect a number of different phenomena. Consequently, these datasets also comprise very different spatial scales. It goes without saying that this evokes tremendous challenges when conducting spatial statistical analyses of such datasets. When assessing spatial autocorrelation among the observations, for example, classical approaches are usually not appropriate. These were…

2015-05-03
GIScience in China – Visits in Wuhan and Shanghai

End of March and early April Prof. Alexander Zipf from GIScience Heidelberg was invited to give some lectures at the State Key Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing (LIESMARS) at Wuhan University and also at the School of Surveying and Geoinformatics at Tongji University in Shanghai, China. The presentations were about…

2015-04-10
A local scale-sensitive indicator of spatial autocorrelation for assessing high- and low-value clusters in multi-scale datasets (e.g., social media datasets)

Georeferenced user-generated datasets like those extracted from Twitter and similar social media feeds are increasingly gaining the interest of spatial analysts. Such datasets oftentimes reflect a wide array of real-world phenomena. However, each of these phenomena takes place at a certain spatial scale. Therefore, user-generated datasets are of multi-scale nature. Such datasets cannot be properly…

2014-12-30
New paper published: ‘Effects of Reduced Terrestrial LiDAR Point Density on High-Resolution Grain Crop Surface Models in Precision Agriculture.’

We are happy to announce that a new paper with the title Effects of Reduced Terrestrial LiDAR Point Density on High-Resolution Grain Crop Surface Models in Precision Agriculture has been published in the special issue Agriculture and Forestry: Sensors, Technologies and Procedures in the journal Sensors: 3D geodata play an increasingly important role in precision…

2014-12-16
Visual Crowds for Geo- and Environmental Sciences Conference Heidelberg

In this workshop, we want to tie two threads of research together: human computation is an important factor in both geoscience and computer vision research. In geosciences, OpenStreetMap is one of the major projects , but this is only one of numerous recent advances. In environmental sciences huge amounts of data are collected, such as…

2014-11-21
Analyzing public transport flows from uncertain social media

The growing number of mobile devices equipped with GPS sensors having broadband internet access, allow users to actively participate and create content through mobile applications and location based services. Whether users are uploading geotagged photos via Flickr or Instagram, checking in at a venue with Foursquare or commenting on a local event via Twitter. These…

2014-10-02
Joint HD-Salzburg GIScience PhD Summer School at Abbey Frauenwörth at Lake Chiemsee

Last month members of the GIScience Research Group of Heidelberg University and the Doctoral College GIScience of Salzburg University met for a few days at a joint PhD Summer School on “Explorations in GIScience”. This included workshops, presentations and most importantly lively discussions on a range of topics related to research in GIScience. The set…

2014-07-31
Prof. Alexander Brenning (Waterloo) – Visiting Professor (Humboldt Fellow) works on Statistical Geocomputation

Prof. Dr. Alexander Brenning from the University of Waterloo (Canada) is spending a research stay as Visiting Professor from February to August 2014 at the GIScience Research Group at Heidelberg University. This was made possible through a grant from the prestigious Humbold-Foundation. His research will focus on “Statistical GeoComputation: Linking Physical and Human Geographical Approaches“.…

2014-02-19
Call for Particiption: Conference “Web 2.0 und Social Media in Disaster Prevention and Flood Risk Management” Heidelberg, 17.10.2013

Call for Participation: Conference “Web 2.0 und Social Media in Disaster Prevention and Flood Risk Management” Heidelberg, 17.10.2013 The summer 2013 floods which hit areas in parts of Germany and adjacent countries devastated large areas and caused a huge amount of economic losses. Against the backdrop of this “centennial flood” this conference deals with the…

2013-09-23
Conference WebSite online: “Web 2.0 und Social Media in Katastrophenschutz und Hochwassermanagement” – 17.10.2013 in Heidelberg

The website for the conference “Web 2.0 und Social Media in Katastrophenschutz und Hochwassermanagement” is now online. It takes place on Oct. 17th in Heidelberg (Studio Villa Bosch). The conference language will be German. The program is taking shape and will be announced on the following site soon: http://www.geog.uni-heidelberg.de/gis/veranstaltungen/web_und_social_media.html Save the date!

2013-08-06
New analysis about OpenStreetMap data

Two new Journal papers on OSM just have been published. One deals with a “Comparison of Volunteered Geographic Information Data Contributions and Community Development for Selected World Regions” (Open Access) and one is about OSM Data imports in the US. Pascal gives some additional and up2date information here. Enjoy Reading!

2013-06-06