The speaker presented a talk at the Brussels Data Science meetup about how graph databases like Neo4j can contribute to HR Analytics. They emphasized that HR functions could benefit from understanding information flow in their organization through social network analysis, which can be integrated into recruitment processes and competence management. Graph databases can help with complex pattern matches, pathfinding queries, and graph metrics such as degree centrality and pagerank. The speaker provided examples of these queries using Neo4j cypher syntax and demonstrated how they can be applied to HR Analytics, including a sample dataset and a short movie about it.