Identify the cause of TripleBound’s underperformance on PlantsByWebSphere

Determine which modified component of the TripleBound framework causes its weaker decomposition performance than CHGNN on the PlantsByWebSphere benchmark.

Background

TripleBound underperforms CHGNN on PlantsByWebSphere across the reported decomposition metrics. The paper offers two possible explanations: the structural dependency graph may already provide sufficient information for clustering, or the triplet constraints inferred from package and naming cues may conflict with structural connectivity. However, the evaluation does not test these explanations or isolate the relevant components, leaving the cause of the failure unresolved.

References

These explanations are plausible but were not directly tested; the available evidence establishes the failure case, not its cause.

— TripleBound: Triplet-Guided Heterogeneous Graph Learning for Microservice Decomposition  (2609.11212 - Weerasinghe et al., 10 Sep 2026) in Section 5.2, “Failure Mode Analysis: PlantsByWebSphere”