Now it belongs to a big data era, and more and more data are collected. The amount of data analyzed by big data is very large, and there will be more and more invalid data.

Big data refers to a collection of data that cannot be captured, managed and processed by conventional software tools in a certain period of time. It is a massive, high-growth and diversified information asset, which needs a new processing mode with stronger decision-making, insight and discovery, and process optimization ability. Simply put, big data is massive data.