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PRL
2007
146views more  PRL 2007»
13 years 10 months ago
Neighbor number, valley seeking and clustering
This paper proposes a novel nonparametric clustering algorithm capable of identifying shape-free clusters. This algorithm is based on a nonparametric estimation of the normalized ...
Chaolin Zhang, Xuegong Zhang, Michael Q. Zhang, Ya...
PAMI
2006
99views more  PAMI 2006»
13 years 10 months ago
A New Convexity Measure Based on a Probabilistic Interpretation of Images
In this article we present a novel convexity measure for object shape analysis. The proposed method is based on the idea of generating pairs of points from a set, and measuring th...
Esa Rahtu, Mikko Salo, Janne Heikkilä
WSC
2007
14 years 1 months ago
Efficient Monte Carlo methods for convex risk measures in portfolio credit risk models
We discuss efficient Monte Carlo (MC) methods for the estimation of convex risk measures within the portfolio credit risk model CreditMetrics. Our focus lies on the Utilitybased ...
Jörn Dunkel, Stefan Weber
IOR
2010
71views more  IOR 2010»
13 years 8 months ago
Stochastic Root Finding and Efficient Estimation of Convex Risk Measures
Reliable risk measurement is a key problem for financial institutions and regulatory authorities. The current industry standard Value-at-Risk has several deficiencies. Improved ri...
Jörn Dunkel, Stefan Weber
CVRMED
1997
Springer
14 years 3 months ago
Image registration: convex weighting functions for histogram-based similarity measures
Recently the entropy-similarity measure has been introduced for the registration of image pairs prior to subtraction in medical imaging e.g. digital subtraction angiography (DSA). ...
Thorsten M. Buzug, Jürgen Weese, Carola Fassn...