Contact: Data and information are related to each other. Data is a record that reflects the attributes of objective things and is a specific manifestation of information. After data is processed, it becomes information; and information needs to be digitally transformed into data before it can be stored and transmitted.

Knowledge is also the result of human beings’ understanding of the objective world (including human beings themselves) in practice. It includes descriptions of facts, information, or skills acquired in education and practice. Knowledge is the systematic understanding that human beings obtain from various channels through improvement, summary and condensation.

Differences:

1. Different concepts

1. Data is the expression and carrier of information, which can be symbols, words, numbers, voices, images, Video etc.

2. Information is the connotation of data. Information is loaded on data and provides meaningful interpretation of data.

3. Knowledge is in line with the direction of civilization, and is the sum of the results of human exploration of the material world and the spiritual world.

2. Different characteristics

1. Information

1) The greater the probability P(x) of the occurrence of message x, the smaller the amount of information; conversely, the occurrence The smaller the probability, the greater the amount of information. It can be seen that the amount of information (we use I to represent it) and the probability of message occurrence are inversely related.

2) When the probability is 1, everyone on earth knows 100% of what happened, so the amount of information is 0.

2. Data

Data can be continuous values, such as sounds and images, which are called analog data. It can also be discrete, such as symbols and text, which is called digital data.

3. Knowledge

1) Hidden characteristics

Explanation: Knowledge is highly hidden and needs to be summarized, summarized and refined.

2) Action-oriented characteristics

Explanation: Knowledge can directly promote people's decision-making and behavior and accelerate the action process.

3. Different classifications

1. Data

Divided according to nature

① Positioning, such as various coordinate data.

② Qualitative, such as data representing the attributes of things (residential areas, rivers, roads, etc.).

③ Quantitative data that reflects the quantitative characteristics of things, such as geometric quantities such as length, area, volume, or physical quantities such as weight and speed.

④ Timing data that reflects the time characteristics of things, such as year, month, day, hour, minute, second, etc.

2. Information

① The representation, dissemination, and storage of information must be attached to some kind of carrier, and the carrier is the thing that carries the information.

②Information can be processed and processed. Information can also be converted from one form to another.

③Information can be stored, retained and disseminated independently of the things it reflects.

④Information can be transferred and shared. Information can be reused without the loss that occurs with materials and energy.

⑤The information is timely.

3. Knowledge

① Know-what (Know-what) is mainly knowledge about describing facts.

②Know-why (Know-why), mainly knowledge of natural principles and laws.

③Know-how mainly refers to the skills and abilities of certain things.

④Know - who refers to the knowledge of who knows and who knows how to do something.

Baidu Encyclopedia - Data and Information

Baidu Encyclopedia - Knowledge