Each model generally has use case diagram, class diagram, activity diagram, sequence diagram, state diagram, communication diagram, component diagram, deployment diagram, combination structure diagram, object diagram and so on! But not every diagram needs it, it depends on the demand.
More uml is just an online help system that can access trufun plato uml2 modeling tools, with detailed introduction and case analysis.
What are the precautions for building a model? The establishment of the model is an orderly and gradual process, which needs continuous exploration and improvement. There are two points worth noting about modeling. First, for the modeler, when the model can't explain the price behavior in the past, it is also of positive significance. Because this means that the model may be thoughtless, such as omitting more important influencing factors, which will help to model and improve the quality of the model. In addition, sometimes unusual price behavior may only be affected by isolated events. In this case, deleting abnormal data may be a better method. The second point is worth noting that it is necessary to distinguish the difference between actual data and previous estimates. In fact, the estimated value matches the market price at that time, not the actual value. This shows that the fitting effect may be better if the actual value in the model is replaced by the estimated value in the past. Therefore, it is worth observing whether the expected statistical data can improve the model effect when establishing and verifying the model. Gao Dun Online School specially reminds: Candidates who have registered for the 20 13 futures qualification examination can effectively follow the review plan! In addition, the 20 13 high-definition course of Gao Dun online school futures career guidance has been opened. Through targeted explanation, training and answering questions, tracking, analyzing and guiding the whole learning process can help candidates improve the preparation effect in an all-round way.
Can Ansys build a model? Yes, it's being prepared/shaped.
What is a uml model? The important content of the standard modeling language UML can be defined by the following five diagrams (***9 diagrams):
The first category is use case diagram.
Describe the system functions from the user's point of view, and point out the operator of each function.
The second kind is static graph.
Include class diagram, object diagram and package diagram. Class diagram describes the static structure of classes in the system. It not only defines the classes in the system, but also expresses the relationships among classes such as association, dependence and aggregation. , but also the internal structure of the class (the properties and operations of the class). Class diagram describes a static relationship, which is valid throughout the life cycle of the system. Object diagram is an example of class diagram, which uses almost the same logo as class diagram. The difference between them is that the object graph shows multiple object instances of the class instead of the actual class. An object diagram is an example of a class diagram. Because an object has a life cycle, an object graph can only exist in a certain period of time in the system. Packages are composed of packages or classes, which represent the relationships between packages. The package diagram is used to describe the hierarchical structure of the system.
The third category is behavior diagram.
Describe the dynamic model of the system and the interaction between components. Among them, the state diagram describes all the possible states of the object and the transition conditions of the state when the event occurs. Usually, the state diagram is a supplement to the class diagram. In practice, it is not necessary to draw state diagrams for all classes, but only for those classes whose behavior has changed due to the influence of external environment. The activity diagram describes the activities to be performed to meet the use case requirements and the constraints between the activities, which helps to identify parallel activities.
The fourth category is interaction graph.
Describe the interaction between objects. Among them, the sequence diagram shows the dynamic cooperative relationship between objects, emphasizes the order of message transmission between objects and shows the interaction between objects. Collaboration diagram describes the collaboration between objects, which is similar to sequence diagram and shows the dynamic collaboration between objects. In addition to information exchange, collaboration diagrams also show objects and their relationships. If time and sequence are emphasized, use sequence diagram; If you emphasize the superior-subordinate relationship, choose the cooperation chart. These two kinds of graphs are collectively called interaction graphs.
The fifth category is the implementation diagram. In ...
Component diagram describes the physical structure of code components and their dependencies. Components can be source code components, binary components or executable components. It contains information about logical classes or implementation classes. Component diagram is helpful to analyze and understand the degree of interaction between components.
The configuration diagram defines the physical architecture of software and hardware in the system. It can display the actual computers and devices (represented by nodes) and their connection relationships, as well as the connection types and dependencies between components. Inside the node, executable parts and objects are placed to show the corresponding relationship between the node and the executable software unit.
From the application point of view, when using object-oriented technology to design a system, the first thing is to describe the requirements; Secondly, the static model of the system is established according to the requirements, and the structure of the system is constructed; The third step is to describe the behavior of the system. The models established in the first and second steps are static, including use case diagram, class diagram (including package), object diagram, component diagram and configuration diagram, which are static modeling mechanisms of standard modeling language UML. Among them, the model established in the third step can not only be executed, but also represent the time sequence state or interaction in the execution process. It includes state diagram, activity diagram, sequence diagram and cooperation diagram, and is a dynamic modeling mechanism of standard modeling language UML. Therefore, the main contents of standard modeling language UML can also be summarized into two categories: static modeling mechanism and dynamic modeling mechanism.
After establishing the mathematical model, we should discuss some problems of combining the topic analysis with the topic.
The key is to find errors after analyzing the problems and improve the model.
What is the role of modeling in management? Management mode is an expression of management system, process, concept or concept.
Management model, its main factors include: management domain, business process, business rules and control points, roles and functions. With the support of software technology and IT infrastructure environment, management modeling can achieve the effect of conveying best management practices, improving enterprise execution efficiency and ensuring implementation in place.
What are the basic steps to establish a model to explain the phenomenon? 1. Analyze the problem; 2. Collect information;
3. Find out the relationship between objects; 4. Determine the conditions;
5. Required materials; 6. Establish a preliminary model;
7. Evaluation model; 8. Modify the model.
According to your description, BPNN can use the neural network toolbox in matlab, GUI interface or matlab source program can be SVM, and Libsvm or lssvm is recommended.
How to create a model in CAD to make a graph, use "Block Definition" (shortcut key: B) to complete its command and save it to the specified location. Next call: insert-block to solve the problem.
When junior high school physics established a model to study light path, it established light.
When studying magnets, magnetic induction lines are established.
When studying the synthesis of force, the schematic diagram and diagram of force are established.
That's all for junior high school.