Research And Implementation Of Interactive Technologies Of Discrete Mathematics Online Learning System

As a compulsory course for computer majors,"Discrete Mathematics" has higher requirements for logical thinking and abstract thinking,which leads to some difficulties in the learning process.For this reason,it is necessary to design and develop an online learning system and apply it to "Discrete Mathematics".On the one hand,the online learning system can play an auxiliary role in the learning of students;on the other hand,teachers can use the system to understand the learning situation of students,and then adjust the teaching plan to achieve personalized teaching.The dissertation mainly studies the interactive technologies of discrete mathematics online learning system,and carries out the system design and implementation.The main work includes the following three aspects.First,for the difficulty of inputting mathematical formulas in solving problems,the dynamic auxiliary keyboard technology is studied.First,use regular expressions to match and extract the mathematical symbols involved in the question,and add confusion symbols according to the chapter to which the question belongs to get all the information needed for the auxiliary keyboard to display.Then the system front-end requests the data and parses to generate the corresponding number of buttons,customize the buttons,so that you can enter the corresponding value in the text box when you click the button.Finally,the Math Jax library is introduced to achieve the rendering of the Latex expression,and the expressions in the title,buttons and text boxes are rendered into formulas,thereby realizing a dynamic auxiliary keyboard.Second,in order to improve the efficiency of teachers and students in sorting out wrong questions,the automatic segmentation technology of wrong questions in homework pictures is studied.In the process of student learning and teacher teaching,it is necessary to collect and sort out the wrong questions in the completed homework for student's review after class and teacher's teaching commentary,but manual sorting is inefficient and time-consuming.For this reason,the object detection algorithm is used to detect the wrong question area in the job picture.First extract the feature map in the picture,and then generate the region of interest that the target may exist according to the feature map,and finally filter and position the region of interest to obtain the final region containing the target.Specifically,the Mask R-CNN model will be used to achieve.achieve.By intercepting and saving the target area,the wrong question picture can be obtained,so as to realize the automatic segmentation of the wrong question.Third,by applying the above researched technologies to teaching practice,an online learning system for discrete mathematics was designed and implemented.According to different user types,it can be divided into student end and teacher end.On the student side,users can answer questions online in the course evaluation module,and view the analysis of each question after submission;in the course resource module,they can view learning materials and conduct independent learning;in the homework management module,they can submit homework and review past assignments.On the teacher side,users can view the submissions of students and the details of the student evaluation in the course evaluation module;the learning resources can be managed in the course resource module;and the homework can be published,corrected and managed in the homework management module.