Models and Theories
In order to analyze and understand the real world of all things human mind, we have introduced many concepts to form a concept system. The concept is called a model system, the logic applied to the model to get insight called theory. For example, there are many mathematical concepts that make up the mathematical model, there are a lot of logic applications in mathematics is the mathematical theory. Mathematical models are very strict, so a very wide application. The correctness of the general theoretical model can be verified by experiments or logical.
Natural number model
We live from the nearest and easiest is to estimate a model of natural numbers, natural numbers objects since ancient times closely related to our lives, it is also the start of the study of mathematics. When we want to calculate the number of properties will use something natural number, using the ancient shepherd stone to calculate the number of sheep, but it was not raised to the height of the theory. Later it will be addition, subtraction and other operations introduced into the natural model number, and then produced a lot of theories.
The real world is full of all kinds of changes and disorganized, we propose from a variety of real-life problems, and then add their own observation and judgment, and to summarize the mathematical tool spot patterns, resulting in a mathematical model. The model further enhance and give a certain axiom system has become a theoretical model capable of constantly revised and theory can continue to develop.
Celestial mechanics model
Celestial mechanics model corresponds to reality is the position of the Earth, the planets, the sun at different times, in accordance with Newton's law of universal gravitation these objects attract each other. Attractive magnitude proportional to the product of mass of the two objects, and inversely proportional to the square of the distance. With this model it is possible to deduce the position and velocity of the object at a certain time, and track the planet's mass can be accurately calculated, so as to solve a lot of problems in astronomy. Celestial mechanics and theoretical models now have to start from Newton is constantly developing.
Quantum mechanical model
Quantum mechanics models corresponding to reality atoms and electrons, only some objects in this model is interpreted as also explained fluctuation into particles. In contrast to the celestial mechanics model, many of the concepts in quantum mechanics also uses the concept of mass, momentum, energy, and the like. As a result of the calculation results with the observations of some of the slight deviations, so this model has to consider Einstein's theory of relativity. At present, the model can not solve many difficulties.
Economic Model
Economic model corresponds to reality is the market price, analysis of the interaction between producers and consumers on commodity prices. Producers want to get the most profit, consumers want to get the maximum effectiveness. The theoretical model provides some balance to maintain both the conditions and method of calculation of the price proposed, but the results predicted by the model and are not allowed to, can only provide some qualitative conclusions. This model helps to analyze the market.
Social model
The model corresponds to the reality of things in society is involved in human existence, or the possibility of analyzing the social causes of an event occurring. Common problems are national elections and population projections and the like, the influence of social factors too many and too complex to no way to predict specific results, but given probability value.
Decision-making model
Decision model corresponds to the reality of human choices is something made, choose a more optimal solution from schemes based on existing knowledge and information. Without the support of a mathematical model of decision-making we can only rely on experience, more of these decisions by "intuition." Mathematical model of decision-making more scientific blessing, can provide a more objective decision-making wisdom, resulting in greater returns.
Machine Intelligence Model
Machine intelligence model corresponds to the reality of human intelligence given to the machine, scientists should explore how the brain machine is equipped with the Master, which is artificial intelligence. Some models simulate human intelligence capability of the machine, so that the machine can execute various instructions humans. Different models emerging, while the emergence of many new theories, the current lack of support for artificial intelligence theory.
No. This public focus on artificial intelligence, reading and feelings and talk about mathematics, computer science, distributed, machine learning, deep learning, natural language processing, algorithms and data structures, Java depth, Tomcat kernel and so on.
