No "personality" online education is bullying: Look at how the network is to build online math test questions?

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If you are not a student, how many of the above function questions still have impressions? Most people should be completely clueless. At the time, however, the same types of topics appeared in our eyes hundreds of times. Over the years the real problem, Huanggang questions ... In the exam-oriented education, students can not avoid a link is title.

In the past two years, the emergence of online education services, including a lot of "online test" services-so many previously need to tutor, or need to collect questions are concentrated on the Internet. But in fact, most of the "online test" is simply to move the papers printed on the paper to the computer or mobile screen, and the actual teaching and practice, still need students to complete online, so, in addition to the advantages of retrieval and storage, "online test" and the traditional form of education, there is no change in nature.

The "dot-com" would like to go further on this basis: like many online education platforms, they will allow users to complete the exercise test on the website, and according to the user's data dynamic adjustment, to recommend the most appropriate high school math exercises.

First, any service that gives itself a "personalized" label must complete the "cold start" process-creating a basic data analysis model for users when they first use the service. The practice of the proposed network is that the user should first evaluate the ability after registering the website, after completing the evaluation test, based on the complete map of the high school mathematics knowledge, the network will rely on what they call the cognitive diagnosis engine to analyze the students ' mastery of the whole high school mathematics knowledge, including the proficiency of each knowledge node and the progress of learning. Then the system will push the supporting learning program and learning materials, users can also report their own weak link.

As the core of Web services is the diagnostic analysis engine, which is based on the item Response germ (Project response theory) and the graded Response model (grade response models), which is used to judge the potential ability of the tested person, To guide the preparation of project screening and test content, which is used to induce computers to automatically calculate and adjust ratings, the two system models are often used in enterprise ERP management. Nowadays, the two theories that are used in teaching can also help to set up the corresponding algorithm for each student user to make analysis and judgment, and to match their learning system dynamically.

To build such a system, what is needed is not just math and computer work, it also involves many disciplines such as education and psychology, so besides founder Zeng Zhiping is a ph. D. In data analysis and data mining at Tsinghua University, the other members of the team cover different disciplines, such as pedagogy, computer science, and psychological statistics, Their common feature is that they all graduated from Tsinghua University.

In addition to the network, we also see a lot of similar based on "data" and "personalized" online education services-such as all kinds of English word memory Web sites, such as the Monkey test site, such as exercise sites. The problem they solve is to avoid the traditional exercise stack, in a more intelligent and effective way, for the practitioners to provide the right exercise, can be more efficient in a certain period of time to help users get promoted. However, this model is not omnipotent, such as how to make a computer screen or mobile terminal for students more convenient "answer"? How to integrate the important factor of "solving time" into the solution process? How can you, like a teacher, "understand" the causes of students ' mistakes and give more detailed and effective feedback? How do you define whether your product positioning is a substitute for a textbook or a chip-time gain? All are the outstanding issues in "personalized" educational products.