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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