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approximation

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Modified Logistic Regression: An Approximation to SVM and Its Applications in Large-Scale Text Categorization: Logistic Regression LR has been widely used in statistics for many years, and has received extensive study in machine learning community recently due to its close relations to Support Vector Machines SVM and Ad-a-Boost. This paper uses a modified version of LR to approximate the optimization of SVM by a...; Tags: Carnegie-Mellon University, Approximation, Logistic Regression, Engineering; White papers 2007-12-01
Buy-at-Bulk Network Design With Protection: This paper considers approximation algorithms for buy-at-bulk network design, with the additional constraint that demand pairs be protected against edge or node failures in the network. In practice, the most popular model used in high speed telecommunication networks for protection against failures, is the so-called 1+1 model. In this model,...; Tags: Network, Approximation, Columbia University, Network Design, Networking, Network Administration; White papers 2007-08-07
Hierarchical Placement and Network Design Problems: This paper gives the first constant-approximations for a number of layered network design problems. It begins by modeling hierarchical caching, where caches are placed in layers and each layer satisfies a fixed percentage of the demand bounded miss rates. The paper presents a constant approximation to the minimum total cost...; Tags: Network, Stanford University, Approximation, Network Design, Network Administration, Networking; White papers 2007-01-01
Physical Properties and Steam Approximations Spreadsheet (exe): This spreadsheet quickly, easily and reliably calculates thermodynamic and transport properties of a few gaseous, liquid and solid species and steam approximations for both saturated and superheated areas. It should provide you with the opportunity to more quickly, easily and effectively do your work, explore more options, save time and...; Tags: Approximation, Spreadsheet, Productivity; Software downloads 2006-10-19

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Approximation Algorithms for Wireless Sensor Deployment: This paper develops an integer linear programming formulation to find a minimum cost deployment of sensors so at attain desired coverage of a target point set. Additionally ª-approximation algorithms and a polynomial time approximation scheme are proposed for the case of grid coverage. Experiments demonstrate the superiority of the proposed...; Tags: Algorithm, University Of Florida, Wireless, Engineering; White papers 2006-04-21

Adaptive OFDM Synchronization Algorithms Based on Discrete Stochastic Approximation: This paper presents discrete stochastic approximation algorithms DSA for time synchronization in OFDM systems. The paper shows that the discrete stochastic approximation algorithms can be effectively used to achieve a significant reduction in computational complexity compared to brute force maximum-likelihood ML methods for OFDM synchronization. The most important property of...; Tags: Algorithm, OFDM, Engineering, Wireless; White papers 2004-03-02
Evaluation of Three CAC Methods: Gaussian Approximation Method, Method of Effective Bandwidth and Diffusion Approximation Method: The greatly variable requirements of different applications, particularly those of video and data sources, make high demands on the development of traffic control in ATM networks. Connection admission control is a traffic control function which requires knowledge of traffic behavior, switching architecture, etc. and its impact on Quality of Service...; Tags: Method, Bandwidth, ATM, Network Technology, Networking; White papers 2006-12-18
Performance Evaluation of Approximation Algorithms for Multipoint Relay Selection: In Mobile Ad hoc NETworks MANET, the selection of Multipoint Relays provides an efficient routing scheme for efficient broadcast and shortest-path unicast. As such a selection is NP-hard, a heuristic has been designed and effectively implemented in protocols for MANET such as the Optimized Link State Routing protocol OLSR. This...; Tags: Algorithm, Selection, Performance, Macquarie University, Performance Evaluation, Performance Management, Team Management, Networking, Human Resources, Workforce Management, Management; White papers
Signal-Specialized Parameterization for Piecewise Linear Reconstruction: This paper proposes a metric for surface parameterization specialized to its signal that can be used to create more efficient, high-quality texture maps. Derived from Taylor expansion of signal error, the metric predicts the signal approximation error - the difference between the original surface signal and its reconstruction from the...; Tags: Metric; White papers
A Distributed Algorithm With Linear Convergence for Maximum Lifetime Routing in Wireless Networks: A wireless sensor network of nodes with limited energy is considered. The problem of computing a routing flow that maximizes the network lifetime is formulated as a linear program. This paper considers a convex optimization problem with a separable objective function that computes an approximate solution to this linear program....; Tags: Algorithm, Lifetime, Network, Convergence, Wireless Network, Engineering, Wi-Fi, VOIP, Wireless, Networking, Telecommunications; White papers
A Note on an Analytic Model for Slow Start in TCP: Sikdar et al has provided a formula to model the window increase pattern given the mechanics of delayed acknowledgements. This paper shows that their sum formula significantly underestimates the iterated sum for rounds greater than seven. The approximation error grows exponentially. It also derives a more accurate sum formula whose...; Tags: Formula, TCP, RMIT University, Approximation Error, Tcp/Ip, Networking; White papers 2007-01-01
POS: A Practical Order Statistics Service for Wireless Sensor Networks: Wireless sensor networks are being deployed to monitor a wide range of environments. Since energy efficiency is critical in these deployments, previous work proposed in-network aggregation and approximation techniques to reduce the energy consumed collecting data. In-network aggregation can be used to compute statistics such as max, min, and average...; Tags: Statistics, Point-of-sale, Network, Sensor, Wireless, Networking; White papers
ZeusDraw (dmg): ZeusDraw is a new drawing program with a fluid, graceful interface. It has an intuitive approach to paths Bezier curves and great brushes. Quartz and Cocoa let ZeusDraw show you what you are doing, as you do it. When you move or rotate an object, you see the object move...; Tags: Brush, Chromatic Bytes, ZeusDraw; Software downloads 2007-03-25
Dynamical Replica Theoretic Analysis of CDMA Detection Dynamics: This paper investigates the detection dynamics of the Gibbs sampler for Code-Division Multiple Access CDMA multiuser detection. The approach is based upon dynamical replica theory which allows an analytic approximation to the dynamics. This tool is used to investigate the basins of attraction when phase coexistence occurs and the paper...; Tags: CDMA, Cellular Phones, Consumer Electronics, Personal Technology; White papers 2005-12-02
Multiagent Traffic Management: An Improved Intersection Control Mechanism: Traffic congestion is one of the leading causes of lost productivity and decreased standard of living in urban settings. Recent advances in artificial intelligence suggest vehicle navigation by autonomous agents will be possible in the near future. This paper extends the prototype implementation in several ways with the aim of...; Tags: Agent, Association For Computing Machinery, Traffic Congestion, Real Estate, Wi-Fi, Wireless, Business Operations; White papers 2005-07-25
LeoStatistic (zip): LeoStatistic is a universal tool for statistical analysis and modeling experimental and market data. It supports import data from text and database files; paste; extraction from pictures. Statistical schemes cover all major statistical problems building histograms including conditional; curve and surface fitting; multivariate approximation and near neighbors estimation; peaks revealing;...; Tags: LeoStatistic, Research & Development, Storage, Microsoft Word, Databases, Business Operations, Hardware, Microsoft Office, Office Suites, Software, Enterprise Software, Data Management; Software downloads 2006-05-03
On Dependency Changes in Collaborative Software Development: This paper investigates the phenomena of dependency changes - changes to software systems caused by other changes. Dependency changes are one measure of the level of interdependency in a software module, therefore a good approximation to the study of dependency management in software development. Survey responses from 148 software developers...; Tags: Software, Software Development, Dependency Change, Tools & Techniques, Management; White papers 2006-01-27
On the Stability of Networks Operating TCP-Like Congestion Control: This paper derives decentralized and scalable stability conditions for a fluid approximation of a class of Internet-like communications networks operating a modified form of TCP-like congestion control. The network consists of an arbitrary interconnection of sources and links with heterogeneous propagation delays. The model here allows for arbitrary concave utility...; Tags: University Of Cambridge, Network, Congestion, TCP, Tcp/Ip, Networking; White papers 2007-01-01
Atlantis: Location Based Services With Bluetooth: In an effort to offer context aware, location based services using the Bluetooth platform specification, a centralized framework has been developed that allows location approximation via sensor data from a ubiquitous Bluetooth sensor network consisting of numerous base stations. Distance from a certain base station of known position is extrapolated;...; Tags: Base Station, Brown University, Bluetooth, Wi-Fi, Wireless; White papers 2005-05-03
A Novel Multiplicative Neural Network Architecture Motivated by Spiking Neuron Model: In this paper, learning algorithm for a multiplicative neural network motivated by spiking neuron model MSN is proposed and tested for various applications where a MultiLayer Perceptron MLP neural network is conventionally used. It is observed that the inclusion of a few more biological phenomena in the formulation of artificial...; Tags: Network, Neural Network, Indian Institute Of Science, Neuron; White papers 2006-09-06

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Help Desk Trouble Ticket Form: The Help Desk Trouble Ticket is an important document for the technical support professional. This form contains all the essential fields for maintain ...; Buy Now

Cisco IOS Command Chart (IOS v.12+): Becoming proficient with Cisco equipment means remembering a whole new set of commands. These command charts give you a quick way to look up the needed IOS commands and switches when you need them.; Buy Now