2 The PWG also suggested that the credit-rating agencies would better serve investors by providing greater transparency about the models, estimation methods, and assumptions used to evaluate credit risk for complex structured securities.
Ichiue, Hibiki, and Yuhei Shimizu, “Determinants of Long-Term Yields: A Panel Data Analysis of Major Countries and Decomposition of Yields of Japan and the US”, Bank of Japan Working Paper Series, No. 12-E-7, 2012. Ichiue, Hibiki, and Takeshi Kimura, Toshifumi Nakamura, and Hikari Hasebe, “Anzen Shisan no Jyukyu to Kokusai no Kishousei Puremiamu”, Bank of Japan Review Series, 2012-J-1, 2012 (available only in Japanese).