VoVis: A Vocabulary-based Web Visualization Framework

Master thesis English OPEN
Sharma, Swati;
(2015)
  • Subject: Visualization | Vocabulary | VoVis | data | RDF | Information | tools

The amount of data in today's digital world is growing day by day. Visualization is considered as the best form of communication because the human brain perceives it much faster than the text data that comprises with thousand of words. Because of the enormous and contin... View more
  • References (28)
    28 references, page 1 of 3

    I background study 9

    2 data visualization 11 2.1 What is Data Visualization ? . . . . . . . . . . . . . . . . . . . 11 2.2 Scientific visualization . . . . . . . . . . . . . . . . . . . . . . 13 2.3 Information visualization . . . . . . . . . . . . . . . . . . . . . 13 2.4 Visual Analytics . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.5 Data Visualization in Daily Life . . . . . . . . . . . . . . . . . 14 2.6 Types of Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.7 Data Visualization Process . . . . . . . . . . . . . . . . . . . . 15 2.7.1 Importing Data . . . . . . . . . . . . . . . . . . . . . . 16 2.7.2 Filtering Data . . . . . . . . . . . . . . . . . . . . . . . 16 2.7.3 Mapping Data . . . . . . . . . . . . . . . . . . . . . . 16 2.7.4 Rendering Data . . . . . . . . . . . . . . . . . . . . . 17

    3 data visualization techniques and frameworks 19 3.1 Designing Effective Data Visualizations . . . . . . . . . . . . . 19 3.2 Data Visualization Frameworks . . . . . . . . . . . . . . . . . 20 3.3 Components of Data Visualization Techniques . . . . . . . . . 20 3.3.1 User Component . . . . . . . . . . . . . . . . . . . . . 21 3.3.2 Data Component . . . . . . . . . . . . . . . . . . . . . 21 3.3.3 Visualization Component . . . . . . . . . . . . . . . . 22

    4 requirements for a data visualization framework 23 4.1 Requirements Analysis and Use Cases . . . . . . . . . . . . . . 23 4.1.1 PLUQI : DaPaaS Use Case . . . . . . . . . . . . . . . . 23 4.1.2 Citi-Sense-MOB Use Case . . . . . . . . . . . . . . . . 24 4.2 Visualization Requirements . . . . . . . . . . . . . . . . . . . 25 4.3 Data Service Requirements . . . . . . . . . . . . . . . . . . . 27 4.4 Web Framework Requirements . . . . . . . . . . . . . . . . . 29

    II the vovis framework 49

    6 vovis: concept and design 51 6.1 Conceptual Architecture of a Web-based Framework . . . . . 51 6.2 The VoVis: Design Overview . . . . . . . . . . . . . . . . . . . 54 6.3 The VoVis Vocabulary Component . . . . . . . . . . . . . . . . 54 6.3.1 Visualization Library . . . . . . . . . . . . . . . . . . 55 6.3.2 RDF Visualization Vocabulary (VisVo) . . . . . . . . 58 6.3.3 Types of Visualization . . . . . . . . . . . . . . . . . 60 6.3.4 Vocabulary Storage Format . . . . . . . . . . . . . . . 74

    7 prototype implementation of the vovis framework 77 7.1 The Controller: Grapher . . . . . . . . . . . . . . . . . . . . . 77 7.2 The Vocabulary Configuration File: gData . . . . . . . . . . . 78 7.3 The User Interface: Home Page . . . . . . . . . . . . . . . . . . 79 7.4 The Data Analyzer: CSVParser . . . . . . . . . . . . . . . . . . 79 7.5 The Visual Mapper: dataDecorator . . . . . . . . . . . . . . . 80 7.6 The Visual Displayer: plotChart . . . . . . . . . . . . . . . . . 80 7.7 The VoVis: Database . . . . . . . . . . . . . . . . . . . . . . . . 81 7.8 The VoVis: Server . . . . . . . . . . . . . . . . . . . . . . . . . 82 7.9 The VoVis: Source Code . . . . . . . . . . . . . . . . . . . . . . 82

    III evaluation and conclusion 83

    8 evaluation of the vovis framework 85 8.1 The VoVis Framework Experimental Setup . . . . . . . . . . . 85 8.2 Results of the Experiment . . . . . . . . . . . . . . . . . . . . 88 8.2.1 Result of Test Scenario 1 . . . . . . . . . . . . . . . . . 89 8.2.2 Result of Test Scenario 2 . . . . . . . . . . . . . . . . . 89 8.2.3 Result of Test Scenario 3 . . . . . . . . . . . . . . . . . 90 8.2.4 Result of Test Scenario 4 . . . . . . . . . . . . . . . . . 91 8.3 VoVis Framework Evaluation . . . . . . . . . . . . . . . . . . . 92

    9 contributions and future work 97

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