Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Inversion of the method of images.
AU - Roberts, Gareth O.
AU - Lo, Violet S.
AU - Daniels, Henry E.
PY - 2002/2
Y1 - 2002/2
N2 - We consider the problem of approximating the density of the time at which a Brownian path first crosses a curved boundary in cases where the exact density is not known or is difficult to compute. Approximation methods which involve the use of images will be proposed. These methods can be used not only for one-sided boundaries but also for the case of two-sided boundaries; not only for concave boundaries but also for convex boundaries. The square root boundary and parabolic boundary provide examples for numerical comparisons of the approximation methods.
AB - We consider the problem of approximating the density of the time at which a Brownian path first crosses a curved boundary in cases where the exact density is not known or is difficult to compute. Approximation methods which involve the use of images will be proposed. These methods can be used not only for one-sided boundaries but also for the case of two-sided boundaries; not only for concave boundaries but also for convex boundaries. The square root boundary and parabolic boundary provide examples for numerical comparisons of the approximation methods.
KW - boundary crossing probabilities
KW - Brownian motion
KW - method of images
M3 - Journal article
VL - 8
SP - 53
EP - 80
JO - Bernoulli
JF - Bernoulli
SN - 1350-7265
IS - 1
ER -