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Knowledge base and construction and retrieval method thereof, and question setting method and system based on knowledge base

A construction method and knowledge base technology, applied to retrieval methods, knowledge bases and their construction methods, based on the field of question generation, can solve problems such as waste of energy and cost, waste of storage space, etc., to save space, reduce retrieval time, The effect of simplifying the database structure

Pending Publication Date: 2021-10-15
北京百舸飞驰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If each question is stored in the form of question stem-answer, it will waste a lot of storage space
How to avoid the waste of energy and cost is a problem worth studying when considering different questions based on the same concept, which may be redesigned from different angles and different question types, to store answers, and to search for answers.

Method used

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  • Knowledge base and construction and retrieval method thereof, and question setting method and system based on knowledge base
  • Knowledge base and construction and retrieval method thereof, and question setting method and system based on knowledge base
  • Knowledge base and construction and retrieval method thereof, and question setting method and system based on knowledge base

Examples

Experimental program
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Embodiment 1

[0113] figure 1 is a schematic diagram of the data structure of the knowledge base of the present invention, figure 2 It is a schematic block diagram of the construction and maintenance method of the knowledge base of the present invention. Such as figure 1 , 2 As shown, the construction method of the knowledge base in this embodiment specifically includes the following steps:

[0114] The knowledge base is formed by storing knowledge points in a single entry in the form of assertions.

[0115] In the figure, the mathematical knowledge points "the sum of the three interior angles of a triangle is 180°" and "4832" are used as examples, such as figure 1 As shown, it can be seen that each knowledge point is stored in the form of an entry.

[0116] Figure 4 It is a schematic structural diagram of an electronic device according to Embodiment 1 of the present invention. The electronic device includes a processor and a memory, and the memory is used to store a computer execut...

Embodiment 2

[0119] This embodiment is a search method for a knowledge base, specifically comprising the following steps:

[0120] Search several index words in the knowledge base, when all the index words fall into a single entry in the knowledge base, it means that the corresponding knowledge entry has been retrieved.

[0121] Among them, the index words to be retrieved are expanded (find synonyms, approximate expressions), and then all index words are searched in the knowledge base in the form of "or" to find knowledge items that satisfy all retrieval conditions at the same time.

[0122] For example, for the index words "triangle" and "180°", the extensions "triangle", "square angle", "one hundred and eighty", "one hundred and eighty degrees" and so on can be respectively expanded.

[0123] Search the above index words in the knowledge base to get the following entries:

[0124] "The sum of the three interior angles of a triangle is 180°";

[0125] "An interior angle in a triangle is...

Embodiment 3

[0130] Such as image 3 As shown, the method for making questions based on the knowledge base of the present embodiment includes the following steps:

[0131] In the above-mentioned knowledge base, narrow down to the appropriate question range, and then randomly retrieve the corresponding single entry within the range, divide it into multiple content words, and process one of the content words according to the type of question. Promptly get the questions and answers to be given.

[0132] Here also take the above knowledge entry "the sum of the three interior angles of a triangle is 180°" as an example. Segment it to get "triangle", "three interior angles", "sum of interior angles" and "180°", and then process one of the content words, such as "180°", according to the type of question, including:

[0133] Multiple-choice question: Randomly retrieve several options that are not synonymous with the selected content words from the alternative library, and thus retrieve "120°", "...

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Abstract

The invention discloses a knowledge base and a construction and retrieval method thereof, and a question setting method and system based on the knowledge base. The knowledge base construction method comprises the step of storing knowledge points with the minimum granularity in a single entry to form the knowledge base. The invention further provides a question setting method based on the knowledge base. The question setting method comprises the steps that the knowledge base is retrieved to obtain a knowledge item; segmenting the knowledge entry into a plurality of notional words; and processing the one or more notional words according to the question type to obtain a to-be-made question stem and an answer. The knowledge base constructed by the method is simple in structure and high in retrieval speed, is very convenient for primary and secondary school students to change and set questions for various question types, can greatly save storage space, and saves question setting resources and cost.

Description

technical field [0001] The invention belongs to the technical field of data knowledge bases, and more specifically relates to a knowledge base and its construction method, retrieval method, question-making method and system based on it, as well as electronic equipment and computer-readable media using it. Background technique [0002] With the advancement of technology, a variety of software to help students learn has emerged. One of the major categories is test question bank software. This type of software can provide students with exercises and test questions corresponding to their grades and levels, and can automatically complete corrections and comments. , Has become a good helper for students to learn. [0003] For the test question bank, it includes a variety of test question types, such as multiple-choice questions, fill-in-the-blank questions, true-and-true questions, and application questions. In students' exercises, there is often a situation where a concept is re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/33G06F16/36G06N5/02G06Q50/20
CPCG06F16/3344G06F16/367G06N5/02G06Q50/20
Inventor 崔寅生刘培娜王锋辉王伟戌陶扬韩均雷潘东
Owner 北京百舸飞驰科技有限公司
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