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Geographic location of PlanetLab servers
Iľko, Pavol ; Balej, Jiří (referee) ; Komosný, Dan (advisor)
This thesis deals with accuracy of location of nodes in experimental network PlanetLab. Thesis is devided into a theoretical and a practical part. Theoretical part consists of the description of network PlanetLab, its brief history and current projects. At the same time, Google Maps framework, which is later employed in the practical part, is described. Practical part describes the functionality of the application aimed at validation of location accuracy. Nextly, the application measuring latency of node to SSH is also described, as well as the map which contains PlanetLab nodes located in Europe. Applications and obtained data are attached on CD disk.
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User Location Interpretation Based on Location Data
Ligocká, Alexandra ; Hynek, Jiří (referee) ; Firc, Anton (advisor)
V tejto práci sa skúmajú kľúčové princípy získavania, spracovania a interpretácie geolokačných údajov s cieľom získania sémanticky zaujímavých miest používateľa. Geolokačné dáta majú obrovský potenciál pre rôzne aplikácie, vrátane reklamných systémov, odporúčaní miest a podobne. Práca sa tiež zameriava na identifikáciu výziev pri extrahovaní domovskej a pracovnej polohy používateľov zo surových GPS dát zozbieraných z GPS zariadení. V práci sa ďalej vysvetľuje dôležitosť sémantického obohatenia miest používateľa. Medzi hlavné diskutované výzvy patrí detekcia zastávok z GPS stôp, identifikácia miest s vysokým významom pre používateľov, extrakcia navštívených miest a ich sémantické obohatenie a interpretácia pomocou aktuálnych mapových podkladov.
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Geographic location of PlanetLab servers
Iľko, Pavol ; Balej, Jiří (referee) ; Komosný, Dan (advisor)
This thesis deals with accuracy of location of nodes in experimental network PlanetLab. Thesis is devided into a theoretical and a practical part. Theoretical part consists of the description of network PlanetLab, its brief history and current projects. At the same time, Google Maps framework, which is later employed in the practical part, is described. Practical part describes the functionality of the application aimed at validation of location accuracy. Nextly, the application measuring latency of node to SSH is also described, as well as the map which contains PlanetLab nodes located in Europe. Applications and obtained data are attached on CD disk.
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Componentization of Linked Data Transformations
Pilař, Štěpán ; Mynarz, Jindřich (advisor) ; Knap, Tomáš (referee)
The diploma thesis is focused on transformation of linked data and opportunities for componentization of extract, transform, load process resulting in reusability of such components. UnifiedViews serves as a framework for demonstration of implementa-tion of selected components. Initial review of related fields of study, relational data oriented ETL and linked data quality management being most prominent, is followed by bottom-up analysis of existing extractors and transformations. Identified common transformations are supplemented by operations known from transformations of relational data. Options and limits of each component candidate are discussed as well as possible cooperation with other components. The next section discusses supported ways of implementation in the selected environment and provides a list of key questions for decision making process is provided. The last part describes implementation of selected components with respect to the approach suggested in the preceding section. Practical use as well as limitations of the implemented components are demonstrated on tasks transforming public contracts datasets.
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