Big Data Digging of the Public’s Cognition about Recycled Water Reuse Based on the BP Neural Network

Table 1

Evaluation level of the public’s recycled water cognition.

Hierarchy name	Meaning
Knowledge	It means knowing and remembering. This level involves the identification of specific knowledge or abstract knowledge in a form that is very close to what the student originally encountered.
Comprehension	It refers to the understanding of things, but does not require a deep understanding, but preliminary may be superficial.
Application	It refers to the use of concepts, rules, and principles learned. It requires learning to apply the abstract concept correctly to the appropriate situation without explaining the problem-solving model.
Analysis	It means decomposing the material into its constituent elements, so that the interrelationship between the various concepts and the organizational structure of the material are clearer and the basic theory and basic principles are elucidated in detail.
Synthesis	Based on the analysis, all the elements that have been decomposed are processed in a comprehensive manner, and they are again reassembled as required in order to comprehensively and creatively solve the problem.
Evaluation	This is the highest level of educational goals in the cognitive field. The requirements of this level are not judged by intuitive feelings or observed phenomena but rather by rational and profoundly convincing judgments about the value of the nature of things.