Recent Patents on Computer Science - Volume 2, Issue 1, 2009

DiffServ over MPLS networks is a widely accepted approach to considerably improve network's ability to support delay-sensitive applications such as voice over IP. In such networks, over-provisioning and careful admission control techniques are still needed, although insufficient to eliminate completely the congestion. To prevent congested paths, these networks use, currently, the preemption policy that induces waste of reso Read More

We propose a new system of a continuous variable quantum key distribution via a wavelength router in the optical networks. A large bandwidth signal is generated by a soliton pulse propagating within the micro ring resonator, which is allowed to form the continuous wavelength with large tunable channel capacity. Two forms of soliton pulses are generated and localized, i.e. temporal and spatial solitons. The required inform Read More

A spatial information system (SIS) is critical to the hosting, querying, and analyzing of spatial data sets. The increasing availability of three-dimensional (3D) data (e.g. from aerial and terrestrial laser scanning) and the desire to use such data in large geo-spatial platforms have been dual drivers in the evolution of integrated SISs. Within this context, recent patents demonstrate efforts to handle large data sets, especially c Read More

This paper surveys the developments of the last 10 years in the area of vision based target tracking for autonomous vehicles navigation. First, the motivations and existing applications of using vision based target tracking for autonomous vehicles navigation are discussed in the introduction section [1]. It can be concluded that it is very necessary to develop robust visual target tracking based navigation algorithms for the bro Read More

Genetic Programming is a form of Natural Computing which adopts principles from neo-Darwinian evolution to automatically solve problems. It is a model induction method in that both the structure and parameters of the solution are explored simultaneously. Genetic Programming is a particularly interesting method as it is claimed to be an invention machine, producing solutions to problems that are competitive and in Read More

There are several shortcomings with the traditional token based authentication using magnetic strip card with PIN/password protection such as easy to duplicate and from forgotten to stolen password etc. Fingerprint authentication is more secure and is a convenient replacement of PIN/password. With the advancement in the microprocessor technology for token such as smartcard and fingerprint authentication tech Read More

Biomedical information continues to grow beyond the capacity of scientists to capture and use all that is produced. Much of this information is presented in scientific journal articles and expressed in natural language. Biomedical text data mining is concerned with automated methods for analyzing the content of these documents and discovering and extracting the knowledge in them. Numerical data mining has long been Read More

The purpose of this paper is to introduce the concept of dominance-based rough set into the incomplete fuzzy decision system. In such information system, all unknown values are considered as lost, the similarity dominance relation is then used to construct information granules. The lower and upper rough fuzzy approximations in terms of the similarity dominance relation are presented, from which one can derive all “at least” Read More

Humans are equipped with “space-variant” vision, i.e. a concentration of photoreceptors, retinal ganglion cells and other visual resources at the central fovea, and a sparser coverage of other regions within a wide 180 degree field of view. If the entire visual field was equipped with foveal ganglion cell resolution, then the brain would have to cope with approximately 350 times more visual information. We will review the rel Read More

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