A model is an artificially created object that is used to study, describe or explain some real system or situation. Models may vary in nature and function. Some models are used to illustrate physical processes, others to study economic phenomena, and others to analyze social processes.
Modeling is the process of creating a model to explain or study a phenomenon. There are two main approaches to modeling: qualitative and quantitative. With a qualitative approach, we try to understand the pattern and relationship between various phenomena, and with a quantitative approach, we try to determine the magnitude of certain parameters in the system.
One of the most famous and frequently used models is mathematical. It is based on the use of mathematical formulas and equations that describe the behavior or properties of real systems. Mathematical models can be either simple or complex, and are widely used in various fields of science, from physics to economics and medicine. They allow you to obtain accurate results and provide an opportunity to test theoretical assumptions.
Another important model is the graphical model, which is an image or diagram of objects, processes or phenomena. Graphical models are universal and simple, and can explain complex processes and interactions in a system, for example, when studying the structure of living organisms.
Medicine uses empirical models that arise from subjective experience, observations and retrospective analysis of a set of facts and events, developing on the basis of the doctor’s creativity and intuition. The purpose of these models is to establish the nature and cause-and-effect relationship between morbidity, disability and death in different socio-economic groups and among residents of different geographical regions.