Можно и стресс-тест, только тогда это уже будет не МС, по определению.
For valuation, you can replace the original equation, say,
dF = CdW
where C is the sqrt of covariance matrix and bold are for vectors) with
dF = s1*P1*dw1 + s2*P2*dw2 + s3*P3*dw3
where P_i's are principal components, s_i's are their respective vols and w_i's are scalar Weiners. That way you need to generate order(s) of magnitude fewer randoms and you'll get faster convergence.
no subject
Date: 2012-07-20 01:38 am (UTC)no subject
Date: 2012-07-20 02:04 pm (UTC)For valuation, you can replace the original equation, say,
dF = CdW
where C is the sqrt of covariance matrix and bold are for vectors) with
dF = s1*P1*dw1 + s2*P2*dw2 + s3*P3*dw3
where P_i's are principal components, s_i's are their respective vols and w_i's are scalar Weiners. That way you need to generate order(s) of magnitude fewer randoms and you'll get faster convergence.