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An Automated Approach for Domain-Specific Knowledge Graph Generation─Graph Measures and Characterization.

Connor O'Ryan1, Kevin D Hayes1, Francis G VanGessel2

  • 1Center for Engineering Concepts Development, Department of Mechanical Engineering, University of Maryland, College Park, Maryland 20742, United States.

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This study introduces a natural language processing (NLP) method to create knowledge graphs from scientific texts, enabling better information extraction from vast chemical literature and identifying linguistic trends in synthesis.

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Area of Science:

  • Computational Chemistry
  • Natural Language Processing
  • Data Science

Background:

  • The exponential growth of scientific publications necessitates automated methods for information extraction.
  • Existing knowledge graph extraction methods are often domain-specific and limited.
  • Bridging the gap between AI advancements and scientific literature analysis is crucial.

Purpose of the Study:

  • To develop a novel natural language processing (NLP) approach for extracting knowledge graphs from technical documents.
  • To create a semantically structured network (SSN) from synthetic chemistry patents.
  • To characterize the resulting knowledge graph for linguistic and trend analysis.

Main Methods:

  • Developed a natural language processing (NLP) model for knowledge graph extraction.
  • Applied the model to approximately 100,000 full-length synthetic chemistry patents.
  • Performed graph characterization using network motif structures, assortativity, and eigenvector centrality.

Main Results:

  • Successfully extracted a semantically structured network (SSN) from chemical patents.
  • Identified linguistic patterns in chemical reaction discourse, including common solvents and compound naming.
  • Observed power-law trends in larger text corpora, indicating scalability.

Conclusions:

  • The developed NLP approach provides a robust method for knowledge graph extraction in specialized domains.
  • Quantitative characterization of knowledge graphs aids in understanding scientific discourse and validating large datasets.
  • This work facilitates deeper insights into chemical synthesis literature and enables cross-domain knowledge graph comparisons.