The ancient saying goes, "The sage sees the small and knows the small, and sees the beginning and knows the end." An important work of Taoism, "Huainanzi - said mountain training", said: "With a small bright big, see a leaf fall to know the age of the twilight, see the water in the bottle to know the world's cold." It means that when you see a leaf falling, you know that autumn is coming; when you see water freezing in a bottle, you know how cold the weather is, which is a figurative analogy of seeing the small and knowing the big.
Mr. Wu Gan Sha used a line from "The Grandmaster" to compare the distinction between big and small data, which is quite appropriate. He said that small data "see the micro", for personal portrayal, can be used in "The Grandmaster" in the "see their own" to describe it; and big data "know", reflecting the characteristics and trends of nature and groups, can be used in "The Grandmaster" to describe it. It can be compared to "seeing the world and all living beings" in "The Grandmaster".
Big is big data, is the full amount of data; small is small data, is individual data. Therefore, for data science, we must make the situation clear on the basis of knowing what is big, what is small, how to deal with the size of the dialectical relationship, in order to be able to do in the application of specific data to grasp the big and put the small, to the big and small, to the small with the big, small in the big. In the study of small data, to both big and small, small to see the big, must consider the correctness of the goal, operability and decision-making scientific and feasibility. In the study of big data, it is necessary to grasp the big and small, small with big, both to consider the overall ****ity, but also to focus on individual characteristics. In this way, the data application, the big can be highly consistent with the small data quantified self, small can be consistent with the future foreseen by the big data, neither can see the small not see the big, nor can see the big not see the small. For data science, from the data, to the data, both to see the big, but also to see the small, small with big, small in the big, in order to really use the data.
When the field of cognitive science undergoes a "sea change", what will be our future? The cognitive revolution, especially the arrival of the "age of truth", "prediction" will be replaced by "anticipation", then, "foresee the future "will no longer be a distant star. If the essence of cognitive science is computational science, then, "big data" and "small data" to compete for the so-called "size" of the "status of the jianghu "What is the significance? But we need to realize: this "data" is not his "data". For the future, "big data" and "small data" will open a "new story", a "foresee the future "The story of the future.