In credit risk management, migration or transition matrices are major inputs for risk management, Credit Value-at-Risk or derivative pricing. After reviewing distance measures for migration matrices we propose some new directed difference indices to measure changes in migration behavior in a more risk-sensitive way. We quantify the changes of the classical distance measures and the new distance...

vspace{0.2cm}In this paper, we design a data structure for the following problem. Let $pi$ be an $x$-monotone trajectory with $n$ vertices in the plane and $epsilon >0$. We show how to preprocess $pi$ and $epsilon$ into a data structure such that for any horizontal query segment $Q$ in the plane, one can quickly determine the minimal continuous fraction of $pi$ whose Fr{'e}chet and Hausdo...

1 College of Art and Sciences, Universiti Utara Malaysia, 06010 Sintok, Kedah, Malaysia. 2 School of Distance Education, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia. 3 Department of Mathematics, School of Distance Education, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia. 4 Department of Technology Management, Faculty of Manufacturing Engineering and Technology Management, ...

Contact centres have been exemplars of scientific management in the discipline of operations management for more than a decade now. With the movement of industries from a resource based economy to knowledge based economy businesses have started to realize the customer eccentricity being the key to sustainability amidst high velocity of the market. However, as technologies have converged and adv...

An ordered labeled tree is a tree in which the nodes are labeled and the left-to-right order among siblings is significant. The edit distance between two ordered labeled trees is the minimum cost of transforming one tree into the other by a sequence of edit operations. Among the best known tree edit distance algorithms, the majority can be categorized in terms of a framework named cover strateg...

The offering of graduate programs by the Federal University of Santa Catarina, through distance education has been introduced with the integrated media concept and advanced digital communication technologies. Such approach is creating objective conditions to put in check resistance of the Brazilian academic community to distance education and also some doubts concerning its efficacy. At the sam...