In this chapter, we will continue to shed light on big data modeling with specific approaches, including vector-space models (VSMs) and graph-data models. The reader will learn about the concept of different structures of data models using hands-on exercises such as exploring graph-data models with Gephi and a semi-structured data model of JSON files. In this chapter, we will be covering the following topics:

• Learning about various structures of the data model
• Learning about the vector-data model using Lucene
• Exploring the graph-data model using Gephi
• Exploring the semi-structured data model of JSON files and XML files