In this paper, we outline the development of a system that automatically constructs ontologies by extracting knowledge from dictionary definition sentences using Robust Minimal Recursion Semantics (RMRS). Combining deep and shallow parsing resource through the common formalism of RMRS allows us to extract ontological relations in greater quantity and quality than possible with any of the method...

It is usually believed that the blocking probability of a switching network will increase with the increase of the failure rate of building components (e.g., links, switching elements, etc.) in the switch. In this report, we propose a mathematical model for evaluating the maximum blocking probability of optical banyan networks on vertical stacking when the link failures are considered. Based on...

Cross-sensor comparison experimental results reported here show that the procedure defined and simulated during the Cross-Sensor Comparison Competition 2013 by our team for migrating / upgrading LG2200 based to LG4000 based biometric systems leads to better LG4000-to-LG2200 cross-sensor iris recognition results than previously reported, both in terms of user comfort and in terms of system safet...

In recent years, Information Technology (IT) has grown into a sector that is both as vital and, or possibly even more, resource consuming as Aviation. Combined with our ever-growing dependence of IT, the resulting energy costs as well as the inevitable depletion of materials, such as fossil fuels and rare earth materials, have driven the need for more sustainable solutions, both environmentally...

Cognitive radio (CR) is a technology exploiting knowledge from very diverse fields, such as machine learning, information theory, and wireless communications. The first part of the report introduces state-of-the-art survey on CR. It begins with survey on software defined radio (SDR), since it is the key enabling technology for future development of practical cognitive systems. Because the work ...

5-Aminolevulinic acid (ALA) is the first committed universal precursor in the tetrapyrrole biosynthesis pathway. In plants, algae, and most bacteria, ALA is generated from glutamate. First, glutamyl-tRNA synthetase activates glutamate by ligating it to tRNA(Glu). Activated glutamate is then converted to glutamate 1-semialdehyde (GSA) by glutamyl-tRNA reductase (GTR). Finally, GSA is rearranged ...

In rate-distortion theory it has been shown that vector quantization (VQ) outperforms its counterpart, scalar quantization (SQ), consistently [Shannon, 1959], [GRAY, 1998]. However the major problems that may prevent its wide acceptance in image compression applications is the computational complexity. The VQ compression system is highly asymmetry in that significantly more computing time is re...