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Table 1 Research questions and rationale

From: An analytical study of information extraction from unstructured and multidimensional big data

 

Research question

Rationale

RQ1

What are the state-of-the-art approaches for IE from unstructured big data?

To explore the state-of-the-art approaches for IE in big data environment for text, images, audio, and video data

RQ2

What are the issues related to the unstructured big data IE for different types of data?

To investigate the impact of unstructured big data on IE techniques

RQ3

What are the common challenges of IE from a variety of big data?

To identify the common challenges for IE from the variety of unstructured data types i.e. text, images, audio, and video