There are demands for good mathematicians to write algorithms that can churn through billions or trillions of data points and show where patterns emerge. The Economist data issue raised this issue as follows: "During the recent financial crisis it became clear that banks and rating agencies had been relying on models which, although they required a vast amount of information to be fed in, failed to reflect financial risk in the real world. This was the first crisis to be sparked by big data—and there will be more". With proper management, big data can be used to unlock new sources of economic value, provide fresh insights into science and hold governments to account. This meetup is for big data science. Data scientists are welcome to join this group and exchange ideas.