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Applying knowledge graphs: Migrant decedent case trajectories in South Texas.

Molly Miranker1, Min-Hsueh Chiu2, Mayank Kejriwal2

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|April 13, 2026
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A knowledge graph (KG) approach reveals patterns in migrant deaths along the Texas-Mexico border. The study highlights the United States Border Patrol

Keywords:
Neo4j softwareUS‐Mexico borderforensic investigationknowledge graphsmigrant deathmortality trends

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Area of Science:

  • Forensic Science
  • Data Science
  • Border Studies

Background:

  • Migrant deaths at the Texas-Mexico border are a documented issue.
  • Understanding the spatial distribution and post-discovery outcomes of migrant remains requires advanced analytical methods.
  • Existing research often lacks a comprehensive view of the entities and processes involved in migrant death investigations.

Purpose of the Study:

  • To develop and apply a knowledge graph (KG) approach for analyzing qualitative data on migrant deaths.
  • To elucidate spatial and temporal patterns in migrant death case outcomes.
  • To identify the diverse entities involved in migrant death investigations in South Texas.

Main Methods:

  • A knowledge graph (KG) was developed to aggregate qualitative information from 370 South Texas newspaper articles.
  • Spatial analysis was employed to identify patterns in the geographical distribution of migrant deaths.
  • Case outcome trajectories were analyzed to understand the involvement of different entities.

Main Results:

  • The United States Border Patrol's jurisdictional purview was most prominent along the Rio Grande River, particularly during summer months.
  • Cases away from the Rio Grande involved a more diverse range of entities, including local law enforcement and "Situational Participants".
  • The study identified specific patterns in the handling and investigation of migrant remains.

Conclusions:

  • Domain-specific knowledge graphs (KGs) combined with spatial analysis offer valuable insights into forensic investigations.
  • This approach can reveal previously undetected patterns in the trajectories of migrant death cases.
  • Understanding the roles of various entities, including "Situational Participants", is crucial for comprehensive forensic analysis in border regions.