I. Introduction
With the proliferation in Communication and digital technology approaches of storage, communication and processing of information are hastily evolving. This expansion of technology is bringing positive changes in every field of industry through efficient storage, retrieve and processing of information. This Information is primarily stored and consumed in the digital format. Along with improvements in information processing content present in document has also broadened. With growing digital content and digitization of paper bound document, understanding content of these documents is getting increased attention from the research community, it has also become foremost commercial interest. With the accompanying advancement in AI there is growing inquisition and expectation for computing environment which can understand, extract not only content but also the logical structure of the digital document.