A Construction Method of Question Answering System Based on Agricultural Encyclopedia Knowledge Graph

Abstract

The invention discloses a method for constructing a question and answer system based on agricultural encyclopedia knowledge graph, which includes acquiring data information on the Internet; preprocessing the data information to obtain structured data, constructing a knowledge graph and storing it in a database; exporting the data in the knowledge graph Entity node data, obtain entity and question keywords and construct training set and validation set; establish a neural network model for multi-label text classification and conduct model training; use the classification structure of entity and question keywords to construct query sentences, and then in the database Query the corresponding data information and feed it back to the user. The invention uses the knowledge graph as a data storage method, uses the trained deep learning model to efficiently classify the question text, constructs the query sentence in combination with the entity matching method, and quickly queries the corresponding question answer in the database storing the knowledge graph, saving the cost of Time to find answers to questions from the vast amount of Internet information.

Description

technical field [0001] The invention relates to the technical field of information systems based on knowledge graphs, in particular to a method for constructing a question answering system based on agricultural encyclopedia knowledge graphs. Background technique [0002] With the rapid development of Internet technology, information has exploded. When people encounter problems in work, study and life, they are usually accustomed to using network tools to seek solutions. However, the search results based on traditional search engines are often very simple. The concept of knowledge graph, as a product of the current development of the Internet, can provide a relatively reasonable and formalized description of various things and the relationships between things that exist in the actual society. [0003] Agriculture is the primary industry of all production and the foundation of human existence. As a large agricultural country, agricultural development plays an indispensable r...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the existing technology is that the feedback results obtained based on traditional search engines are often a series of web pages or document information lists, and users still need to spend a lot of time and energy to find effective information, and cannot clearly obtain relevant crop information. , as well as effectively grasp the information of crop adaptation areas, pest control, light, soil, water and other information and carry out agricultural work

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