Knowledge extract and ontology construction method of assembly process text

Yimin Du,Xiang Zhai,Lingling Shi,Hanqing Gong,Zhijing Zhang,J Zhu

doi:10.1051/matecconf/202235502029

Abstract

The actual product assembly process mainly relies on manual assembly by workers, and the personal experience of workers is difficult to effectively reuse. Ontology as a knowledge management and expression tool is gradually applied in the field of assembly. However, the manual construction of the ontology is time-consuming and labor-intensive, and the automatic construction of the ontology requires a large number of corpora for training, both of which are difficult to obtain a good assembly case ontology. This paper proposes a method in which automatically extracts relevant knowledge from case assembly process files to generates case database and integrates ontology framework of assembly domain to construct ontology. It shows that the accuracy can be guaranteed on the basis of the rapid construction of case ontology. The feasibility of this method is proved by a practical case.

Highlights

At present, case-based assembly process generation mainly relies on skilled workers
In order to better manage the knowledge accumulated in the assembly process and realize the rapid generation of the case assembly process, ontology technology as a knowledge representation, management, and reuse technology began to be gradually used Applied in the field of assembly
In order to quickly generate assembly case ontology, this paper proposes an ontology construction method that automatically extracts case entity concepts and related attributes from case assembly process text information and merges assembly domain ontology template framework to generate assembly case ontology

Summary

Introduction

Case-based assembly process generation mainly relies on skilled workers. [3] that ontology is a clear, formal and normative description of the shared conceptual model is widely accepted It describes the meaning of the four sides: 1. In order to quickly generate assembly case ontology, this paper proposes an ontology construction method that automatically extracts case entity concepts and related attributes from case assembly process text information and merges assembly domain ontology template framework to generate assembly case ontology. Are extracted to form the assembly process text, and the named entity recognition technology based on conditional random field [16,17,18] is used to realize automatic extraction of case concepts. The way to extract the concept of assemble case and related attributes are introduced in the third part. The feasibility of the construction method is proved by analyzing the concrete assembly cases

Construction of ontology conceptual framework in assembly field

Generation of assembly case ontology

Results

Case analysis