金融理论与实践
金融理論與實踐
금융이론여실천
Financial Theory and Practice
2008年
7期
3~5
,共null页
信用利差指数 国债收益率 平均信用水平
信用利差指數 國債收益率 平均信用水平
신용리차지수 국채수익솔 평균신용수평
Credit Spreads Index; Treasury Yield; Average Credit Level
构造国债收益率和公司债收益率之间的差距即信用利差指数具有重要的意义,不仅为券商和债券投资者提供债券定价依据,还可以度量发债公司的平均信用水平,为宏观经济的运行提供参考。基于多项式样条、指数样条和Nelson-Siegel模型等不同收益率曲线的构造方法,构造了信用利差指数,并对最优参数的估计进行了研究。
構造國債收益率和公司債收益率之間的差距即信用利差指數具有重要的意義,不僅為券商和債券投資者提供債券定價依據,還可以度量髮債公司的平均信用水平,為宏觀經濟的運行提供參攷。基于多項式樣條、指數樣條和Nelson-Siegel模型等不同收益率麯線的構造方法,構造瞭信用利差指數,併對最優參數的估計進行瞭研究。
구조국채수익솔화공사채수익솔지간적차거즉신용리차지수구유중요적의의,불부위권상화채권투자자제공채권정개의거,환가이도량발채공사적평균신용수평,위굉관경제적운행제공삼고。기우다항식양조、지수양조화Nelson-Siegel모형등불동수익솔곡선적구조방법,구조료신용리차지수,병대최우삼수적고계진행료연구。
It has great significant to build credit spreads index which shows the yield spread between treasury bonds and corporate bonds. Credit spreads index is not only the criterion of notes pricing for brokers and investors, but also the measure of corporate credit. It also provides valuable information for macroeconomic operation. This paper gets credit index based on polynomial spline, index spline and Nelson-Siegel model, and investigate the estimation of optimal parameters.