Abstract To address the issues of insufficient representation of complex relationships, data sparsity, and false paths in multi-hop reasoning models within existing knowledge graph question-answering systems, a multi-hop knowledge reasoning model based on adversarial reinforcement learning is proposed. First, high-order relation vectors are decomposed to parameterize and combine entity and relation features. An attention mechanism is introduced when neighboring nodes are aggregated to assign different weights, thereby enhancing the representation ability of complex relationships. Additionally, a knowledge graph embedding framework is designed to measure the credibility of <subject entity, question, answer entity> in the embedding space. Second, multi-dimensional information is integrated into the state representation of the reinforcement learning framework to enable the Agent to make reliable decisions despite data sparsity. The generator calculates the probability of candidate entities based on state information and generates answers, while the discriminator evaluates the reasonableness of the answers and the reasoning paths. The problem of false paths is alleviated by optimizing the feedback through soft rewards and path rewards, and adversarial training is utilized to alternately optimize the generator and the discriminator. Finally, the model is applied to a multi-hop question-answering system for cloud manufacturing product design knowledge to verify its effectiveness. Comparative experiments, ablation experiments and case studies verify the effectiveness of the proposed model.
Fund:Central Government-Guided Local Science and Technology Development Fund Project(No.YDZJSX1A044), Open Fund of the Shanxi Key Laboratory of Intelligent Information Processing(No.CICIP2023001), Shanxi Provincial Graduate Practical Innovation Project(No.2024SJ320)
Corresponding Authors:
GUO Yinzhang, Ph.D., professor. His research interests include crowd computing, cloud computing and deep learning.
About author:: CHENG Lingyun, Master student. Her research interests include cloud computing and cloud security, and knowledge graphs.LIU Qingfang, Master student. Her research interests include crowd computing, cloud computing and deep learning.
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2025, Vol. 38 
