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 question or intention forms the subject of our interest and whatever our intention might be, we need to create an evidence tree which supports the subject of our interest.

Note

The evidence board is not a new concept and detectives...