Implementation of the Extended 2-Factor Black-Karasinski Model
Document ID: 2007-18 (previously 2007/001)
Published on: 1st January 2007
Author: Steven Morrison
This document describes the technical details of the Barrie & Hibbert 2-factor Black-Karasinski (2FBK) model, updating and extending previous technical documentation in B&H technical note #2002/007. The note also describes details of the tree-based implementation of the model which has been updated to include the following features:
- The model has been extended to allow an exact fit to the initial yield curve.
- The tree is "pruned" at extreme nodes.
- There is a change to the way we parameterise correlation on the tree.
This new implementation is available as a new nominal interest-rate model -- "TwoFactorBKExt" -- from ESG Version 5.4.0 onwards.