Jiri Horak

Jiri Horak
VŠB-Technical University of Ostrava · Geoinformatics

Professor

About

86
Publications
16,218
Reads
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498
Citations
Introduction
Jiri Horak currently works at the Institute of Geoinformatics, VŠB-Technical University of Ostrava. Jiri does research in Geostatistics and Geoinformatics (GIS).
Additional affiliations
September 2006 - January 2012
VŠB-Technical University of Ostrava
Position
  • Head of Department
January 2003 - present
VŠB-Technical University of Ostrava
Position
  • Professor (Associate)
Education
September 1991 - May 1998
VŠB-Technical University of Ostrava
Field of study
  • Geological engineering
September 1988 - June 1989
Palacký University Olomouc
Field of study
  • pedagogy
September 1981 - June 1985
VŠB-Technical University of Ostrava
Field of study
  • Mathematical geology

Publications

Publications (86)
Article
Full-text available
Contemporary cities require excellent walking conditions to support human physical activity, increase humans’ well-being, reduce traffic, and create a healthy urban environment. Various indicators and metrics exist to evaluate walking conditions. To evaluate the spatial pattern of objective-based indicators, two popular indices were selected—the Wa...
Conference Paper
Full-text available
Article
Social networks are platforms widely used by travelers who express their opinions about many services like public transport. This paper investigates the value of texts from social networks as a data source for detecting the spatial distribution of problems within a public transit network by geolocating citizens' feelings, and analyzes the effects s...
Article
Full-text available
Activity-based micro-scale simulation models for transport modelling provide better evaluations of public transport accessibility, enabling researchers to overcome the shortage of reliable real-world data. Current simulation systems face simplifications of personal behaviour, zonal patterns, non-optimisation of public transport trips (choice of the...
Article
Full-text available
One of the ways of improving the attractiveness of public transport is to bring it closer to its potential users. A long walking distance from a stop is often one of the critical factors limiting its more frequent and extensive use. Studies dealing with the accessibility of transport networks usually work only with the closest stop. This article an...
Article
Full-text available
On the basis of individual crime data, spatial analysis of crime development in Ostrava was conducted followed by analysis of potential urban factors influencing the discovered development. The analysis was preceded by a complex semi-automatic process of harmonisation and data geocoding. A combination of automated and expert techniques were utilise...
Conference Paper
Full-text available
Public transport conditions are analysed using simulated commuting to important employers and recording data about significant features of all simulated trips. Two forms of overall public transport accessibility evaluation are compared—rule based and multivariate based classifications. Rule based classification was developed in several variants int...
Book
This book is intended for researchers, practitioners and students who are interested in the current trends and want to make their GI applications and research dynamic. Time is the key element of contemporary GIS: mobile and wearable electronics, sensor networks, UAVs and other mobile snoopers, the IoT and many other resources produce a massive amou...
Chapter
Sparse data sets may be considered as a one of the issues of big data generating extremely uneven frequency distribution. To deal with this issue, special methods must be applied. The study is focused on the Czech graffiti crimes and selected factors (property offences, buildings, flats, garages, educational facilities, and gambling clubs) which ma...
Conference Paper
Full-text available
V rámci projektu TAČR „Návrh doporučujících národních kurikul v oblasti prostorových informací“ bylo připraveno několik analýz, které hodnotí podle připraveného návrhu národního kmene znalostí GIS&T a metodiky situaci ve výuce vysokoškolských oborů v ČR i zahraničí zaměřených na prostorové informace, ale také posuzuje podobně situaci i u školení po...
Conference Paper
Full-text available
Příspěvek představuje analýzu trendů technologického vývoje v oblasti geoinformatiky. Studie je rozdělena na dvě části. Nejprve se věnuje krátko a střednědobé projekci, kdy projektuje pravděpodobnou reakci geoinformatických oborů na objevující se nebo i již zavedené technologické novinky v jiných oborech. Tato část studie popisuje pravděpodobný výv...
Conference Paper
Full-text available
Transport accessibility evaluation of employers with work shifts. Transport accessibility evaluation of employers is considered as one of the most important accessibility analysis. One of the complicated factors is a requirement of work shifts where the evaluation cannot by based only on one state. If the situation is changed in time it is necessar...
Book
This edited volume gathers the proceedings of the Symposium GIS Ostrava 2016, the Rise of Big Spatial Data, held at the Technical University of Ostrava, Czech Republic, March 16–18, 2016. Combining theoretical papers and applications by authors from around the globe, it summarises the latest research findings in the area of big spatial data and key...
Method
Full-text available
Proposal of recommended national curricula in the branch of spatial information and the system of complex educational activities for spatial information
Article
Distance-based methods are applied in various fields of research. In this paper, a new relative distance-based method, the W function, is introduced. This method contributes to the assessment of spatial patterns of economic activities using the stochastic Monte Carlo simulation, and supplements the typology of distance-based methods recently drawn...
Conference Paper
Full-text available
Social networks represent a valuable source of information about personal attitudes, behaviour and activities. Various studies prove interesting relationships to the development of stock market, tourist activities, spreading of infection diseases etc. Dynamic development of social networks offers integration of many potentially valuable data source...
Conference Paper
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Among various socio-pathological events, the crime is perceived as the most serious issue. Understanding of factors influencing the intensity, structure and dynamic of crime is essential for appropriate targeting of preventive efforts. Due to the complexity of crime, it is necessary to integrate various sources of data which are usually complicated...
Conference Paper
The concept of multidimensional database and OLAP are usually understood as a part of Business intelligence. The paper presents the design of multidimensional database for crime prevention containing aggregated data from various crime registers and many other different sources for population, unemployment, properties, health, facilities etc. ETL pr...
Conference Paper
Full-text available
Available registers of institutions, companies, schools and other organizations suitable for a wide spectrum of geospatial analysis face the problem of the high-quality geocoding of their descriptions of geographical locations. Recorded addresses are not standardized and contain misspelling, missing or superfluous parts. Existing APIs of various ma...
Article
Full-text available
The main aim of this work was to investigate the availability and capacity of educational programmes at different levels at European Higher Educational Institutions (HEI) that are directly related to disaster resilience. This investigation was important since education in disaster resilience for citizens, communities, public administrators and deci...
Conference Paper
Full-text available
OLAP for Socio-Economic Exploratory Analysis and Crime Prevention: OLAP (On-line Analytical Processing) is considered as a part of Business Intelligence (BI) which enables effective and intuitive access to consolidated data stored in a multidimensional database. Despite usual commercial BI application the solutions for socio-economic data (usually...
Conference Paper
Full-text available
Methodology of Harmonisation, Aggregation and Anonymization of Crime Data: The methodology was developed in the frame of the project „Geoinformatics as a tool to support integrated activities of safety and emergency units“ and certified by Police of the Czech Republic in 2015. The methodology proposes processes for data modification and unification...
Conference Paper
Full-text available
Methodology of Creation of a Multidimensional Database for Crime Prevention: The methodology was developed in the frame of the project „Geoinformatics as a tool to support integrated activities of safety and emergency units“ and certified by Ministry of Interior in 2015. The methodology practically applied principles of Business Intelligence for cr...
Conference Paper
Full-text available
The methodology was developed in the frame of the project "Geoinformatics as a tool to support integrated activities of safety and emergency units" and certified by Ministry of Interior in 2015. Main aim of this methodology is to recommend standardized manual of kernel density estimation (KDE) utilisation for identification of anomalous crime local...
Method
Full-text available
Methodology of creating a multidimensional database for crime prevention (in Czech only)
Method
Full-text available
Methodology of Harmonisation, Aggregation and Anonymization of Crime Data (in Czech only)
Article
Full-text available
The accessibility evaluation of public transport is based on commuting to work conditions in Czech municipalities. Searching in time schedules are supported by client-server parallel processing. Three indicators are calculated for each municipality, district and region. Their evaluation proves the significant differences between commuting times. It...
Article
Full-text available
The question of modal split or modal share for commuting is still very relevant topic in the studies of transport issues. This paper deals with evaluating of real demands for individual and public transport using for daily commuting between municipalities in the Czech Republic based on data from census 2011. Results discover a strong relationship b...
Article
Důležitou součástí dopravních analýz je hodnocení dopravní dostupnosti. Nejrůznější ukazatele se využívají jak pro individuální tak i pro hromadnou dopravu. Nicméně ukazatele pro hodnocení dostupnosti veřejnou dopravou se často liší od metrik pro dostupnost individuální dopravou a to hlavně z důvodu nedostatku vhodných dat. V článku je hodnoceno je...
Conference Paper
Full-text available
Transport accessibility is an important part of the process of regional transport services analysing as well as construction and optimization of road or railway networks. It is used in both public and individual transport and has its place in optimizing routes or pedestrians and cyclists. Analyses of transport accessibility belong to popular studie...
Article
Full-text available
Geographic Information Science and Technologies (GIS&T) have today become critical components of the global cyberinfrastructure. The increasing demand for specialized geospatial education and training opportunities was responded by the rapid development of academic certificate programs and also plenty of vocational courses. Unfortunately, the GIS e...
Conference Paper
Full-text available
Abstrakt K běžným zdrojům informací o dojížďce patří SLDB. Výsledky SLDB 2011 ukazují na poměrně významný podíl chybějících odpovědí, což komplikuje zpracování takových dat. Jako minimální opatření je možné provést korekci známých hodnot pro dosažení celkové konzistence toků. Vlastní hodnocení dojížďky do zaměstnání je provedeno pro Moravskoslezský...
Conference Paper
Full-text available
Abstrakt Vzájemná interakce krajských měst a okolních obcí slábne s jejich vzdáleností. Tyto interakce se projevují v objemu obyvatel dojíždějících za zaměstnáním a jsou rovněž anizotropní. Vzdálenostní funkce umožňuje ohodnotit změny v interakcích s rostoucí vzdáleností a může být základem pro simulaci toků obyvatel do zaměstnání. Přispívá k analy...
Book
The aim of the book is to present and discuss new methods, issues and challenges involved in geoinformatics’ contribution to making transportation more intelligent, efficient and human-friendly. It covers a wide range of topics related to transportation and geoinformatics. The themes are divided into four main sections: Transport modeling, Sensor d...
Article
Full-text available
Natural disaster events are continuously increasing in number and severity in recent years. In 2010, 263 million people were affected by disasters – 110 million more than in 2004, the year of the Asian tsunami. There is a need for citizens as well as public administrators to be educated in disaster resilience issues for better prevention, mitigatio...
Conference Paper
Full-text available
The aim of this paper is to present the development of improved gravity models of commuting conditions based on alternatively-assessed “mass” of origins and destinations, as well as on improved distance evaluation. For the case study the Ostrava region (CZ) was selected and delimited as a catchment with significant everyday commuting flows to Ostra...
Conference Paper
Full-text available
The accessibility evaluation of public transport is based on commuting conditions in the Czech Republic, where still a significant part of jobs are organised in 2 or 3 work shifts. The usual indicators in such conditions suffer from time of day dependency. The analysis of time dependency is provided for commuting between Czech municipalities for se...
Article
Full-text available
The paper presents results of performance tests of download services of Czech Office of Surveying, Mapping and Cadastre according to INSPIRE requirements. Methodology of testing is explained, including monitoring performance of reference servers. 26 millions of random requests were generated for each monitored operation, layer and coordinate system...
Conference Paper
Full-text available
Selected web search engines provide statistics of user activities according to the topics, time and locations. The utilization requires well prepared phrases and searching range. The system of etalons for calibration searching frequencies provided by Google Trends is proposed. It was applied for evaluation of searching names of Czech towns. The reg...
Article
This paper is focused on mapping and monitoring of unemployment hot spots using registers of local authorities in the Ostrava City (Czech Republic) to identify socially excluded localities at the micro-scale. The register of unemployed persons and the population register provide data for quantification of specific indicators of a local labour situa...
Article
Full-text available
Selected web search engines provide statistics regarding user activities according to the topic, time, and optionally, location of the search. The statistics provided by Google Insights for Search (Google Trends) for the names of Czech cities as parts of online queries within a six-year period were explored and analysed according to their frequency...
Conference Paper
Full-text available
The paper deals with the factors influencing the long-term unemployment rate in the European Union countries in 2001-2010. The applied factors were selected in compliance with the economics of labour market theory and cover three areas: economic environment (GDP growth in market prices, inflation), tax area (tax wedge), social benefit (net replacem...
Conference Paper
The status of railway stations depends not only on a nodal position in the transport network, but also on the conditions, structure and capacity of its local surroundings. The level and potential of railway stations surroundings is studied on the case of Ostrava, the third largest city of the Czech Republic. Various data sources are used in the con...
Conference Paper
Full-text available
The research is focused on the study of the impact of the number and the pattern of geometrical entities and colour models in map like drawings upon the file size of PNG format. The main outputs originate from the exploration of an extended sample set of PNG images generated by Web Map Services of selected European servers. Original images were sub...
Article
Full-text available
J. Ardielli, J. Horak, J. Ruzicka. View Service Quality Testing according to INSPIRE Implementing Rules // Electronics and Electrical Engineering. - Kaunas: Technologija, 2012. - No. 3(119). - P. 69-74. In collaboration with COSMC it has been prepared new tests of WMS services which focus on two main aspects: a) Monitoring the availability of WMS r...
Chapter
Full-text available
Geoparsing assigns geographic identifiers to textual words and phrases in documents. The specific problem is how to apply geoparsing in languages where changes of word termination occur. An appropriate method requires a flexible solution reflecting different strategies and priorities. Sixteen Czech RSS news channels were evaluated according to ten...
Article
Full-text available
Unemployment represents one of the key social and economical issues of the current world. The Integrated Portal of the Ministry of Labor and Social Affairs of the Czech Republic supports unemployed people to find a proper job using various useful tools. Any user can find a job according various criteria. The existence of public transport connection...
Article
Full-text available
The process of data harmonization starts with a description of data sources and mapping of differences among heterogeneous source and target data sets. The semantic differences usually include incompatible data schemas (structures, different data types, domains etc.) and differences in content (different values for the same entity). While the secon...
Conference Paper
Full-text available
Network services represent a key part of INSPIRE. They shall be available to the public and accessible via the Internet. The advent of prototypes using OGC WMS on PDA’s requires to test performance of selected servers and its suitability for using such service on PDA platform. The paper proposes a way how to test and measure the availability of net...
Article
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Population changes caused by industrialization and deindustrialization – comparison of Ostrava and Glasgow. The aim of this paper is to analyse and compare population changes in two old industrial cities (Ostrava and Glasgow) with accent on how these changes are driven by large economic and historic events like world wars, economic crises, politica...
Article
Full-text available
The monitoring of socially excluded localities requires data sources with a sufficient frequency of data flow to quickly detect the changes and allow taking appropriate measures in time. The register of unemployed persons may provide important indicators of the unemployment status of individual localities and also a movement of social conditions th...
Article
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Institut geoinformatiky, Hornicko-geologická fakulta, VŠB-TU Ostrava, 17.listopadu 15/2172, 708 33 Ostrava-Poruba, Česká republika 1 jiri.horak@vsb.cz; 2 david.vojtek@vsb.cz; 3 tomas.inspektor.hgf@vsb.cz; 4 pavel.belaj.st@vsb.cz Abstrakt. V roce 2009 došlo ke změně vybavení úřadů práce v ČR z prostředí MS MAP do ArcGIS 9.3, verze ArcView. V rámci p...
Article
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The social segregation represents a multidimensional problem where all dimensions are not equal. Usually one of the most important factors is a long-term unemployment. The evaluation of unemployment with an appropriate spatial resolution can be based on census data, extensive survey or on located records from the evidence of unemployed persons. In...
Conference Paper
The presented project being a part of rainfall-runoff modeling is focused on determination of relations between soil moisture changes detected in radar data and precipitations. One catchment area of-the Olse River in the northern Moravia is used for. The catchment's land cover classes derived from Thematic Mapper data are decisive for creation of h...
Article
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Abstrakt. Příspěvek je pohledem na současný stav v oblasti technické normalizace a standardizace v geoinformatice. Upozorňuje na změny a pravidla při tvorbě norem a jejich uplatňování v praxi v rámci členství v EU. Vysvětluje právní rámec technické normalizace na evropské a návazně na národní úrovni, které tvoří nutný základ pro technickou harmoniz...
Article
GIS are used for the rainfall-runoff model development and determining its parameters. GIS data comprise soil layer, topography including three dimensional data, and land cover data. Rainfall estimations from remote sensing radar measurements and historical records of rainfall measurement are applied together with hydrometeorological ground station...
Article
Full-text available
Land cover and its characteristics influence actual and long term water balance of landscape segment, particularly evapotranspiration, infiltration, surface and hypodermic runoff. Thus de-scription and modelling of the particular events allow determining basic requirements for land cover classification effective to rainfall-runoff (further in the t...
Article
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Web services support the integration and interoperability of Web-based applications and enable machine-to-machine interaction. The concepts of web services and open distributed architecture were applied to the development of T-DSS, the prototype customised for web based hydro-information systems. T-DSS provides mapping services, database related se...
Article
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3. vyd. Nad názvem: Vysoká škola báňská - Technická univerzita Ostrava, Hornicko-geologická fakulta, Institut geoinformatiky 90 výt.