Identifying relationship lending in the interbank market: A network approach
提出统计检验方法识别银行间的关系借贷，应用于意大利银行间网络发现关系借贷占比稳定，且关系贷方在金融困境时倾向收取高利率。
Relationship lending is broadly interpreted as a strong partnership between a lender and a borrower. Nevertheless, we still lack consensus regarding how to quantify the strength of a lending relationship, while simple statistics such as the frequency and volume of loans have been used as proxies in previous studies. Here, we propose statistical tests to identify relationship lending as a significant tie between banks. Application of the proposed method to the Italian interbank networks reveals that the fraction of relationship lending among all bilateral trades has been quite stable and that the relationship lenders tend to impose high interest rates at the time of financial distress.