Georg Heiler is a PhD candidate at the Vienna University of Technology and Complexity Science Hub Vienna.
Georg obtained a bachelor’s and a master’s degree in business informatics from the Vienna University of Technology. In his master thesis titled “Cost-based statistical methods for fraud detection”, he showed the superiority of an individual cost based machine learning based credit check process over the traditional methodology used at the partner company.
As a data scientist Georg works on E2E analytical pipelines.
MSc in Business Informatics, 2018
BSc in Business Informatics, 2015
Evaluating relative changes leads to additional insights that would remain hidden when only evaluating absolute changes. We analyze a dataset describing the mobility of mobile phones in Austria before, during COVID-19 lock-down measures until recently.By applying compositional data analysis we show that formerly hidden information becomes available: we see that the elderly population groups increase relative mobility and that the younger groups, especially on weekends, also do not decrease their mobility as much as the others.
In March 2020, the Austrian government introduced a widespread lock-down in response to the COVID-19 pandemic. Based on subjective impressions and anecdotal evidence, Austrian public and private life came to a sudden halt. Here we assess the effect of the lock-down quantitatively for all regions in Austria and present an analysis of daily changes of human mobility throughout Austria using near-real-time anonymized mobile phone data. We describe an efficient data aggregation pipeline and analyze the mobility by quantifying mobile-phone traffic at specific point of interest (POI), analyzing individual trajectories and investigating the cluster structure of the origin-destination graph. We found a reduction of commuters at Viennese metro stations of over 80% and the number of devices with a radius of gyration of less than 500 m almost doubled. The results of studying crowd-movement behavior highlight considerable changes in the structure of mobility networks, revealed by a higher modularity and an increase from 12 to 20 detected communities. We demonstrate the relevance of mobility data for epidemiological studies by showing a significant correlation of the outflow from the town of Ischgl (an early COVID-19 hotspot) and the reported COVID-19 cases with an 8-day time lag. This research indicates that mobile phone usage data permits the moment-by-moment quantification of mobility behavior for a whole country. We emphasize the need to improve the availability of such data in anonymized form to empower rapid response to combat COVID-19 and future pandemics.
Conda forge offers effortless installation of various well tested python packages. I am a maintainer of H3 and H3-py on conda-forge.
Reverse engineering old data pipelines ; ) and analyzing huge quantities of spatial data.
Individual cost based classification model outperforms classical processes.
PredictR is a fintech startup which turns personal transaction lists into cashflow forecasts. It allows customers to explor their financial future to put life decisions into context.
Vienna Data Science Group [VDSG] is a nonprofit association promoting knowledge about data science. I am a member here and help newcomers find their way into data science.