heuristics

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Symmetric Spin

This paper gives a detailed description of SymmSpin, a prototype implementation of a symmetry-reduction package for the Spin model checker. It offers several heuristics for state-space reduction. A series of experiments is described, underlining the effectiveness of the heuristics and demonstrating the ability of the implementation to handle almost all...

Tags: Heuristics, Lucent Technologies Inc., Alcatel

White papers

The Simplest Heuristics May Be the Best in Java JIT Compilers

The simplest strategy in Java just-in-time JIT compilers is to compile each Java method the first time it is called. However, better performance can often be obtained by selectively compiling methods based on heuristics of how often they are likely to be called during the rest of the program's execution....

Tags: Heuristics, Java, Compiler, JIT, JIT Compiler, Quality, Development Tools, Business Operations, Software Development, Software/Web Development

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Two-Layer Network Design by Branch-and-Cut Featuring MIP-Based Heuristics

This paper deals with MIP-based primal heuristics to be used within a branch-and-cut approach for solving multi-layer telecommunication network design problems. Based on a mixed-integer programming formulation for two network layers, the paper presents three heuristics for solving important subproblems, two of which solve a sub-MIP. On multi-layer planning instances...

Tags: Heuristics, Network, Networking, Telephony, Network Administration

White papers 2007-02-12

An Evaluation of Heuristics for SLA Based Parallel Job Scheduling

In the context of SLA based job scheduling for high performance grid computing, this paper investigates the behaviour of various scheduling heuristics to schedule SLA-bounded jobs onto a parallel computing resource. The key objective of this investigation is to evaluate the effectiveness of simple scheduling heuristics using as criteria the...

Tags: Job, Heuristics, SLA, Service Level Management, It Operations, It service Management

White papers 2006-02-01

What is the best real time blacklist?

I have all of the antispam software I can think of to fight spam, and I am still getting a lot of it. I know I am not alone. Is there anyone out there who knows a good RBL that stops most spam? If I ramp my...

Tags: block list, e-mail, heuristics, Packet Spoofer, RBL, spam, SpamCop.net

Q&A 2005-03-10

Abstract packages ensure flexibility

The proper design of Java packages ensures flexibility. Abstract packages minimize dependencies and help ensure flexible package relationships.To ensure flexible package relationships, Java developers strive to depend on the abstract part of a package and minimize dependencies on the concrete parts. By doing so, we minimize the impact of change,...

Tags: Java, Kirk Knoernschild, logfacade, LoggingFacade, LoggingFacade class, heuristics

Technical articles 2002-07-25

Additional Resources

Scolex RavMonE Eliminator (rar)

Scolex RavMonE Eliminator uses advanced heuristics as well as the new SMART engine which does away with the need to specify which drive to scan. SMART is 'smart' enough to determine which drive to scan irregardless if it's a fixed or removable device. With the advanced heuristics engine known as...

Tags: Engine, Mutant+ Engine, Productivity, Memory, Semiconductors, Hardware, Components

Software downloads 2007-04-24

Heuristics for Scheduling Virtual Machines for Improving QoS in Public Computing Utilities

Computing utilities based on Virtual Machines VMs migrating among distributed computing resources are becoming increasingly practical and emerging as a viable infrastructure for outsourcing computer services. Here, the paper presents a large scale distributed computing architecture named Public Computing Utility PCU, where non-dedicated public resources are augmented with privately owned...

Tags: QoS, Distributed Computing, Virtual Machine, Desktop Virtualization, Cloud Computing, Network Technology, Networking

White papers 2006-11-10

Appliance by Exinda Networks filters recreational traffic

Exinda Networks hopes to gain a foothold in the North American market with its ability to classify "recreational traffic" such as Skype and BitTorrent on enterprise networks. The new feature will arrive as a firmware upgrade, due to be released in a few weeks time, for Exinda's...

Tags: BitTorrent, Traffic, Layer 7 Technologies Inc., WANs, Peer To Peer (P2P), Networking, Network Technology, Internet, Paul Mah

Blog posts 2007-11-18

WordsEx (zip)

Words Extended is a powerful Internet text information discovery, retrieval, extraction, and display tool, and contains the epochal denouement of the Book of Revelation. Ranking heuristics speed you to the choicest information. Minimal motion right hand operation, smooth scrolling and big fonts make it easy. This version is the first...

Tags: Words Extended, Internet, Productivity

Software downloads 2008-02-08

F-Prot Antivirus for Windows (msi)

F-PROT Antivirus for Windows is one of the leading antivirus software applications on the market today. Built on the award-winning F-PROT Antivirus scanning engine, F-PROT Antivirus is renowned for its reliability, ease of use, fast scanning and exceptionally low resource consumption. New and unknown threats are detected with advanced heuristics...

Tags: FRISK Software, Antivirus Software, Microsoft Windows, Viruses And Worms, Security, Operating Systems, Software

Software downloads 2008-06-09

Performance Analysis of Distributed Data Base Systems

In this paper we briefly present the design of a distributed relational data base system. Then, we discuss experimental observations of the performance of that system executing both short and long commands. Conclusions are also drawn concerning metrics that distributed query processing heuristics should attempt to minimize. Lastly, we comment...

Tags: Performance, University Of California, Performance Management, Human Resources, Workforce Management

White papers

Semantic Outlier Analysis for Sessionizing Web Logs

As the web usage patterns from clients are getting more complex, simple sessionizations based on time and navigation-oriented heuristics have been restricted to exploit various kinds of rule discovering methods. This paper presents semantic session reconstruction based on semantic outliers from web log data. Above all, web directory service such...

Tags: directory service, Web, analysis

White papers 2003-07-15

What Mutating Spyware Reveals About the Future of Security

Spyware is literally evolving - mutating in the wild to avoid detection. This is an ominous trend, and it's getting worse: Cases of mutating spyware have more than doubled since the start of the year. And this is true mutation, unlike simple polymorphism. Impressive though it may sound, a polymorphic...

Tags: Computerworld, Spyware, Adware & Malware, Spyware, Cyberthreats, Viruses And Worms, Security

White papers 2005-09-09

How antivirus software works

If a brand-new type of virus is released, there's little chance that an antivirus program will be able to detect the menacing code before it does harm. In this Daily Feature, Brien Posey discusses defenses against new viruses.Antivirus software detects known viruses by consulting a database containing virus signatures. When...

Tags: Cyberthreats, Viruses and worms, SECURITY, antivirus, software, Brien M. Posey MCSE, virus, antivirus software

Technical articles 2000-11-08

Quick Recovery For ReiserFS (exe)

QR for Linux ReiserFS data recovery software recover data from Ext2 and Ext3 in case of hard disk crash, Linux, Search heuristics help locate partitions and folders quickly. GUI designed to have least user interaction.Quick Recovery is a do-it-yourself non-destructive Linux Data Recovery Software. There are just two steps to...

Tags: Data Recovery, Recovery, Analysis, Linux, Storage Management, Databases, Operating Systems, Open Source, Software, Storage, Hardware, Enterprise Software, Data Management

Software downloads 2007-01-25

An Efficient Filter for Denial-of-Service Bandwidth Attacks

This paper presents an efficient method for detecting and filtering denial-of-service bandwidth attacks. The system called TOPS Tabulated Online Packet Statistics can monitor a large number of network addresses in a compact, fixed-size structure using several effective heuristics. The paper demonstrates that TOPS can detect bandwidth attacks in a standard...

Tags: Denial Of Service, University Of Melbourne, Attack, Bandwidth Attack, Security

White papers 2008-01-01

TrueProtection Personal Edition (exe)

TrueProtection Personal Edition eliminates spyware, viruses, and malware by preventing the initial infection combined with excellent cleanup capabilities to remove even the most stubborn spyware infections. TrueProtection Personal Edition does not rely on dated technologies such as definitions or heuristics to protect you as these methods often fail to truly...

Tags: Infection, Malware, TrueProtection Software, TrueProtection Personal Edition, Cyberthreats, Spyware, Adware & Malware, Spyware, Security, Viruses And Worms

Software downloads 2008-06-12

TCP Self-Clocking

The authors propose a simple queueing model for one or more TCP transfers sharing a bottleneck link and examine its behavior when the buffer at the bottleneck is large compared to the bandwidth-delay product. This model explains anomalies in measurements of HTTP transfers. This paper describes a self-clocking steady state...

Tags: TCP, Tcp/Ip, Networking

White papers 2007-01-01

Understanding Optimization

Since its introduction in Oracle7, the Cost-Based Optimizer CBO has become more valuable and relevant with each new release of the Oracle database while its counterpart, the Rule-Based Optimizer RBO, has become increasingly less so. The difference between the two optimizers is relatively clear: The CBO chooses the best path...

Tags: Oracle Corp., Optimization, Oracle Database, Databases, Enterprise Software, Software, Data Management

White papers 2005-01-01