Chapter 6.  The Evidence Tree Builder Service - Implementing the Business Logic

In the previous chapter, we managed to save the top-ranked news items, so now we can choose the item of our interest and build an evidence tree around it. An evidence tree is basically a collection of concepts which directly or indirectly relate to the subject we want to find more facts about. We can visualize it as a network of nodes which are connected to each other via edges and each node contains valuable information regarding the subject of our interest.

Sometimes we might have a question in our mind and want to find the answer related to that news. It shouldn't always be a question. Sometimes we just want to gather more information about the news itself. That ...

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