Forward--Backward Green Cosine Geometry for Directed Community Detection and Overlap Expansion

The document is a multi-paper arXiv digest covering network science, social-media analysis, mobility synthesis, and code-quality research. Security-relevant items: (1) MoveOD (synthesizing high-resolution origin–destination commute flows from public sources) can enable fine-grained mobility modeling and pose privacy/deanonymization risks when combined with auxiliary data; (2) Geographic analysis of Stack Overflow snippets documents frequent security-related violations (unsanitized inputs, insecure dynamic evaluation, other reliability/performance/security defects), which increases supply-chain