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Multi-relation questioning and answering system adopting interpretable reasoning network

A relational and network technology, applied in the field of artificial intelligence and the Internet, can solve problems such as being unsuitable for other operations, lack of explicit explanation by neural interrogators, etc., and achieve the effect of high interpretability

Active Publication Date: 2018-05-04
TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

However, the Neural Programmer requires predefined symbolic operations and thus may not be suitable for other operations, while the Neural Interrogator lacks explicit interpretation

Method used

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  • Multi-relation questioning and answering system adopting interpretable reasoning network

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Embodiment

[0041]First of all, it should be noted that although Chinese or English is used as an example of natural language below, this is only for ease of understanding and does not imply any limitation. The applicable occasions of the present invention are not limited to specific language types or specific language families.

[0042] Task Definition: The goal is to provide interpretable reasoning networks to answer multi-relational questions.

[0043] Given a question q, its named entities or topics e s It can be obtained with NER (Named Entity Recognition) tools, and the task is to find an entity a in the knowledge base as an answer.

[0044] The inventors consider two typical multi-relational problems: the path problem and the join problem, and the former is the main focus of the present invention.

[0045] Path issues contain only named entities (body e s ), to find its answer (object a) along an answer path consisting of several relations and corresponding intermediate entities...

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Abstract

The invention discloses a multi-relation questioning and answering method adopting an interpretable reasoning network. The method is implemented through a multi-hop mode. The method comprises the steps that 1, an input question is converted into distributed question expression; 2, according to a reasoning state of a previous hop and question expression of the previous hop, the relation between theprevious hop and a current hop is predicted; 3, if the predicted relation between the previous hop and the current hop is not a termination relation, the reasoning state of the previous hop and the question expression of the previous hop are updated to be a reasoning state of the current hop and question expression of the current hop according to the predicted relation between the previous hop and the current hop, the current hop serves as a next hop to return to the step 2, and otherwise the step 4 is turned to; and 4, a question and an answer of the current hop are determined and output according to the reasoning state of the current hop. The method can provide traceable and observable intermediate prediction and is used for reasoning analysis and fault diagnosis.

Description

technical field [0001] The present invention relates to the fields of artificial intelligence and Internet technology, in particular, to an (open field) multi-relational question answering system utilizing interpretable reasoning networks. Background technique [0002] Question answering system based on knowledge base is an advanced form of information retrieval system, which can answer user's question and answer query service request expressed in natural language with accurate and concise natural language. Specifically, given a natural language question, through semantic understanding and parsing of the question, and then using the knowledge base for query, the answer to the question is given by searching the knowledge database in the relevant field. [0003] Among such question answering systems, open-domain question answering (QA) has been a hot topic in the field of artificial intelligence, and large knowledge bases such as Freebase have also facilitated this task in rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/3329
Inventor 黄民烈周曼桐朱小燕
Owner TSINGHUA UNIV
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