Analýza a vizualizace dat z webových portálů nabídek práce

The main goal of the thesis is to obtain, analytically process and visualize data from a job offer portal. The data visualization take form of dashboards created in Power BI application. To meet the main goal of the thesis, it is necessary to gain knowledge in the field of web scraping, such is the way of obtaining data. For the ability to create fitting Business Intelligence solution, it is necessary to gain knowledge in this area. And for the final creation of dashboards it is needed to have knowledge of data visualization.The theoretical part describes the topic of web scraping. It also describes how web scraping can be used in the field of data science together with practical examples followed by the legal aspect of such. The next part describes definition of Business Intelligence, its history and the differences between classical data warehouses and the use of SSBI. The last chapter of theoretical part presents ways how to design data visualizations and describes dashboard layouts.In the practical part, an introductory study is first performed, in which the users of the visualizations are defined together with their requirements by means of an unstructured interview. This is followed by an analysis of existing web portals and selecting one of them for further processing. In the following chapters, the architecture of the business intelligence solution is designed and implemented. Firstly, a script for scraping data is created, then a data warehouse followed by a tabular model. At the end of the thesis, dashboards in Power BI application are designed and implemented.