A knowledge question answering system and method based on biomedical literature

Abstract

The present invention provides a knowledge question answering system and method based on biomedical literature. The system includes a question analysis module, a document retrieval module, and a fragment retrieval module. The question analysis module uses the document retrieval module and the fragment retrieval module to Connecting, the method first analyzes the problem, combines query refinement and query expansion technology, obtains problem information through problem analysis and generates query conditions, then performs document retrieval, uses the retrieval method to find relevant medical documents, and uses specific rules to sort the N ranked by The title and abstract of the previous document are divided into a collection of sentences to form a collection of candidate fragments. Finally, fragment retrieval is performed to find relevant sentences that can be used to answer medical questions and return them to the user. The present invention combines SDM, FSDM and PDFR retrieval methods, not only The global search is performed, and different text domains are assigned different weights for search, which effectively improves the document search effect.

Description

technical field [0001] The invention relates to the fields of knowledge engineering, natural language processing and computer network information technology, and in particular to a knowledge question answering system and method based on biomedical literature. Background technique [0002] With the improvement of material living standards, people pay more and more attention to their health, but in most cases, people cannot go to the hospital to understand their health symptoms in time. On the one hand, it takes a lot of time and energy to go to the hospital. People cannot fully describe their symptoms in the process of seeking medical treatment, and often miss some important information about symptoms. Therefore, people are eager to know their health status in a timely manner through some convenient way. [0003] With the increase of medical literature on the Internet, it is possible for people to use medical literature to seek help by themselves, but the process of seeking a...

AI Technical Summary

Problems solved by technology

However, in the medical field, wrong information can easily lead to misdiagnosis, and wrong answers are far more likely to pose a threat to user health than no answers

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