A new approach to design of a fuzzy-rule-based classifier that is capable of selecting informative features is discussed. Three basic stages of the classifier construction-feature selection, generation of fuzzy rule b...
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A new approach to design of a fuzzy-rule-based classifier that is capable of selecting informative features is discussed. Three basic stages of the classifier construction-feature selection, generation of fuzzy rule base, and optimization of the parameters of rule antecedents-are identified. At the first stage, several feature subsets on the basis of discrete harmonic search are generated by using the wrapper scheme. The classifier structure is formed by the rule base generation algorithm by using extreme feature values. The optimal parameters of the fuzzy classifier are extracted from the training data using continuous harmonic search. Akaike information criterion is deployed to identify the best performing classifiers. The performance of the classifier was tested on real-world KEEL and KDD Cup 1999 datasets. The proposed algorithms were compared with other fuzzy classifiers tested on the same datasets. Experimental results show efficiency of the proposed approach and demonstrate that highly accurate classifiers can be constructed by using relatively few features.
We present a hardware implementation of the Jacobi algorithmto compute the eigenvalue decomposition (EVD). The computation of eigenvalues and eigenvectors has many applications where real time processing is required, ...
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We present a hardware implementation of the Jacobi algorithmto compute the eigenvalue decomposition (EVD). The computation of eigenvalues and eigenvectors has many applications where real time processing is required, and thus hardware implementations are often mandatory. Some of these implementations have been carried out with field programmable gate array (FPGA) devices using low level register transfer level (RTL) languages. In the present study, we used the Xilinx Vivado HLS tool to develop a high level synthesis (HLS) design and evaluated different hardware architectures. After analyzing the design for different input matrix sizes and various hardware configurations, we compared it with the results of other studies reported in the literature, concluding that although resource usage may be higher when HLS tools are used, the design performance is equal to or better than low level hardware designs.
Recent new media concerts feature a trend toward the fuller integration ofmodalities enabled by close audiovisual collaborations, avoiding the sometimes artificial separationof disc jockey (DJ) and video jockey (VJ), ...
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Recent new media concerts feature a trend toward the fuller integration ofmodalities enabled by close audiovisual collaborations, avoiding the sometimes artificial separationof disc jockey (DJ) and video jockey (VJ), of audio and visual artist. Integrating audio and visualdomains has been an artistic concern from the experimental films of such notaries as OskarFischinger and Norman McClaren earlier in the 20th century, through 1960s happenings, 1970s analogvideo synthesizers, and 1980s pop videos, to the current proliferation of VJing, DVD labels, andlive cinema (Lew 2004). The rise of the VJ has been allied with the growth in club culture since the1980s, with Super-8 film and video projectionists at early raves now replaced by ''laptopists'' armedwith commercial digital VJ software like Isadora, Aestesis, Motion Dive, and Arkaos VJ.
Lifecycle building performance assessment (LBPA) ensures that buildings perform and operate as intended during building lifecycle. Such assessment activities are typically multi-phase and multi-disciplinary, and gener...
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Lifecycle building performance assessment (LBPA) ensures that buildings perform and operate as intended during building lifecycle. Such assessment activities are typically multi-phase and multi-disciplinary, and generate large amounts of information that need efficient management. During the lifecycle of one building, multiple assessment methods are employed semi-concurrently and with a great deal of information overlap between successive phases. This information is semantically rich and context-dependent, reflecting the local perspective that it exists within. Usage of separate and disconnected tools for each method results in information fragmentation and redundancy, posing problems for well-informed decision making. The objective of this research is to develop an integral reference model, CLIP (Computational support for Lifecycle Integral Performance assessment), that aims to improve the efficiency and quality of existing performance assessment practices. The model provides flexible, modular, and extensible data structures and algorithms for the representation, transformation, integration, and visualization of performance information. The initial results support the CLIP model's ability to deal with the local volatility and variation in the processes and information content that is being managed, while requiring further refinement and extension work to achieve a customized solution to fit in different contextual settings. (C) 2009 Elsevier Ltd. All rights reserved.
We proposed the combination of signal denoising technology and Hankel transforms algorithm which were both based on Haar wavelet decomposition. Therefore, one can achieve above two purposes simultaneously while the wa...
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We proposed the combination of signal denoising technology and Hankel transforms algorithm which were both based on Haar wavelet decomposition. Therefore, one can achieve above two purposes simultaneously while the wavelet decomposition is carried out just for once. The principle and its derivation of the Haar wavelet method for Hankel transforms were put forward. Numerical examples and engineering application showed that the precision of Haar wavelet method is about magnitude of 1.0E - 4 and 1.0E - 5;it can maintain good accuracy when using fewer wavelet coefficients. Moreover, it has better anti-noise performance and better computational stability than the filter method, so it can be applied to the Hankel transforms with noisy data.
In this paper, computer algorithms are developed for determining optimal purchasing strategies for firms that receive extended payment terms from vendors. The resultant models are particularly attractive in high-volum...
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In this paper, computer algorithms are developed for determining optimal purchasing strategies for firms that receive extended payment terms from vendors. The resultant models are particularly attractive in high-volume environments with extended payment terms, a high opportunity cost of capital, and relatively large inventory-related costs. It is shown that purchases of quantities smaller than the traditional Economic Order Quantity may be appropriate in these environments and other situations where vendors offer either all-units or incremental purchase price discounts. The resultant algorithms are solved in this study using a spreadsheet-based search procedure implemented on a personal computer.
We have designed and implemented a system for real-time detection of 2-D image features on a reconfigurable computer based on Field Programmable Gate Arrays (FPGA's). We envision this device as the front-end of a ...
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We have designed and implemented a system for real-time detection of 2-D image features on a reconfigurable computer based on Field Programmable Gate Arrays (FPGA's). We envision this device as the front-end of a system able to track image features in real-time vision applications like autonomous vehicle navigation and "structure from motion". The algorithm employed to select good features is inspired by the method of Tomasi and Kanade. Compared to the original method, the algorithm that we have devised does not require any floating point or transcendental operations, and maps efficiently into a highly pipelined architecture, well suited to be implemented in FPGA technology. We have implemented the algorithm on a low-cost reconfigurable computer equipped with video decoder and encoder interfaces. Reliable operation has been observed on an image stream generated by a standard NTSC commercial video camera at 30 Hz on different scenes and under different light conditions. This result compares favorably to the implementation of the same algorithm on a system based on the TI C80 DSP, able to process at most 5 frames/second.
Delta/hexagonal phase shifting transformer (PST) represents both magnetically coupled and electrically connected circuits, which makes it unique in design and construction from a standard transformer. Conventionally, ...
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Delta/hexagonal phase shifting transformer (PST) represents both magnetically coupled and electrically connected circuits, which makes it unique in design and construction from a standard transformer. Conventionally, differential protection serves as a main protection element of PST and offers distinguished features such as speed and selectivity. On the contrary, it is prone to various new challenges in addition to well-recognised traditional ones when applied to delta/hexagonal PST. New challenges include non-standard phase shift between two ends, saturation of the series winding, dependence of differential/ restraining currents on tap changer position and turn-turn fault detection. This study exploits the unique design of PST and explores the suitability of applying electromagnetic equations by presenting a new algorithm for the protection of PST. In addition to the internal/external fault detection and discrimination capability, unlike differential protection, the proposed algorithm remains stable during magnetisation inrush current, current transformer saturation and saturation of the series winding. Even though the implementation of the proposed algorithm requires currents, voltages and tracking of the tap-changer position, capabilities of the algorithm make it a distinguished and unique protection solution. Performance of the algorithm is tested and analysed for various fault and non-faulted power system conditions using power systems computer aided design/electromagnetic transient including DC (PSCAD/EMTDC) software.
作者：
Chaudhary, AnkitRaheja, J. L.BITS
Dept Comp Sci Comp Vis Res Grp Pilani Rajasthan India CSIR
Cent Elect Engn Res Inst Digital Syst Grp Machine Vis Lab Pilani Rajasthan India
The shape of human hand is such that it can perform many tedious tasks easily. It can reach narrow places and can perform difficult operations. It can bend its fingers at different angles to pick or hold different obj...
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The shape of human hand is such that it can perform many tedious tasks easily. It can reach narrow places and can perform difficult operations. It can bend its fingers at different angles to pick or hold different objects and apply force via fingers or palm area. It is very helpful in many difficult applications. However, there is risk of injury to the human hand, or even life in dangerous operations. It is not advisable to gamble of human body parts for applications like land mine removal. Hence, there is a need of a robotic hand which can perform the same operation as a human hand does in real time. This paper discusses a vision-based technique of controlling a robotic hand which has human hand like joints in fingers. The user has to show a gesture to the system with bare hand without any limitation on hand direction and the robotic hand would mimic that gesture. The positions of human hand fingers were calculated using supervised Artificial Neural Network. The preprocessing made the whole algorithm faster by cropping the region of interest from input image frame. The gesture was extracted from the input image and fingertips, centre of palm were detected. The animated simulation of robotic hand is done in Blender software. (C) 2012 Elsevier Ltd. All rights reserved.
V-variable fractals and superfractals have recently been introduced by Barnsley [Barnsley Michael, Hutchinson John, Stenflo Orjan. A fractal valued random iteration algorithm and fractal hierarchy. Fractals 2005;13(2)...
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V-variable fractals and superfractals have recently been introduced by Barnsley [Barnsley Michael, Hutchinson John, Stenflo Orjan. A fractal valued random iteration algorithm and fractal hierarchy. Fractals 2005;13(2):111-46 [MR2151094 (2006b:28014)]] to the world of mathematics and computer graphics. In this paper, we introduce superior iterates to study the role of contractive and non-contractive operators in relation to superfractals. A modified algorithm along with details of computer implementation is also provided to compute V-variable fractals. A brief discussion about the various aspects of the computed figures indicates usefulness of the study. (C) 2009 Elsevier Ltd. All rights reserved.
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