As of now, this big data is a relatively broad and generalized direction compared to being able to speak, so if you want to write related content or write related softwares, you first need to figure out the big data direction you want to understand and the inner workings of it. This means that this big data direction you want to get big data or want to write a paper on belongs to daily life or belongs to technology? After figuring out, the direction then categorize and further expand the content.