DWMH: An Improved Algorithm Based on WM for Large-Scale Pattern Set

2013 ◽  
Vol 765-767 ◽  
pp. 963-967
Author(s):  
Xiao Ning Xu ◽  
Ai Ping Li ◽  
Jun Xing Zhu
Keyword(s):  
High Speed ◽  
Large Scale ◽  
String Matching ◽  
Hash Table ◽  
Matching Algorithm ◽  
Set Size ◽  
Security Applications ◽  
Network Bandwidth ◽  
Key Technologies ◽  
Improved Algorithm

String matching algorithm is one of the key technologies in numerous network security applications and systems. Nowadays, the increasing network bandwidth and pattern set size both call for high speed string matching algorithm for large-scale pattern set. An improved algorithm based on WM algorithm for large-scale pattern set is proposed in this paper. The presented multiple pattern string matching algorithm, DWMH, which we call in brief, combines the idea of Horspool algorithm with WM algorithm and applies the method of double hash to revise WMs HASH table to achieve better performance. Our extensive experiments demonstrated that DWMH algorithm is more efficient than WM algorithm, particularly when the size of pattern set becomes large-scale.

MDH: A High Speed Multi-phase Dynamic Hash String Matching Algorithm for Large-Scale Pattern Set

2007 ◽  
pp. 201-215 ◽  
Author(s):  
Zongwei Zhou ◽  
Yibo Xue ◽  
Junda Liu ◽  
Wei Zhang ◽  
Jun Li
Keyword(s):  
High Speed ◽  
Large Scale ◽  
String Matching ◽  
Matching Algorithm ◽  
Phase Dynamic ◽  
Multi Phase

Quality of Service on Link Aggregation Network Virtualization for Docker Containers

2019 ◽  
Vol 886 ◽  
pp. 227-232
Author(s):  
Yanapat Chuchuen ◽  
Kritwara Rattanaopas ◽  
Sarapee Chunkaew
Keyword(s):  
Traffic Control ◽  
Load Balance ◽  
High Speed ◽  
Large Scale ◽  
Network Virtualization ◽  
Network Bandwidth ◽  
Working Together ◽  
Multiple Network ◽  
Implementation Tool

Docker engine is an extremely powerful tool for PaaS platform of cloud computing. It gives benefits for large-scale of internet services. Web service is basic service for everyone who requires to access internet that web infrastructure must has scalability with load-balance web server called reverse proxy. The key answers for a large-scale web must have multiple web servers working together with high speed bandwidth. Moreover, multiple clusters can find in the same data center there are required to assign priority and quality of each cluster service. We investigate load-balance assign link aggregation with network QoS by using pipework script and traffic control tool in frontend reverse proxy server on each cluster. Our research evaluates scenario of network QoS ratios which include 50/50, 60/40, 70/30 and 80/20. We compare network bandwidth between both web reverse proxy clusters. The results present our designed and implementation tool not only can control network QoS on each web reverse proxy cluster in all load-balance link aggregation modes which include round-robin, XOR and ALB but also those of clusters can access multiple network interface. In experiment, average network bandwidths in all QoS cases are around 200 MB per second for link aggregation of 2 gigabit interface.

scholarly journals XWM: a high-speed matching algorithm for large-scale URL rules in wireless surveillance applications

2019 ◽  
Vol 79 (23-24) ◽  
pp. 16245-16263
Author(s):  
Shuzhuang Zhang ◽  
Yanbin Sun ◽  
Fanzhi Meng ◽  
Yunsheng Fu ◽  
Bowei Jia ◽  
...  
Keyword(s):  
High Speed ◽  
Large Scale ◽  
Matching Algorithm ◽  
Surveillance Applications

An Improved Algorithm Based on AC-BM Algorithm

2013 ◽  
Vol 380-384 ◽  
pp. 1576-1579
Author(s):  
Shi Song Xiao ◽  
Ao Lin Wang ◽  
Hui Feng
Keyword(s):  
Intrusion Detection ◽  
Pattern Matching ◽  
System Performance ◽  
Intrusion Detection System ◽  
Detection System ◽  
String Matching ◽  
Matching Algorithm ◽  
Matching Methods ◽  
Bm Algorithm ◽  
Improved Algorithm

The pattern matching algorithm is the mainstream technology in the instruction detection system, and therefore as a pattern-matching methods core string matching algorithm directly affect an intrusion detection system performance and efficiency. So based on the discussions of the most fashionable pattern matching algorithms at present, an improved algorithm of AC-BM is presented. From the experiments in the Snort ,it is concluded that the improved algorithm of the performance and efficiency is higher than AC-BM algorithm.

A report on High Speed Wind Tunnel Testing of the Large Scale Advanced Prop-Fan

1988 ◽  
Author(s):  
P. BUSHNELL ◽  
W. CAMPBELL ◽  
H. WAINAUSKI
Keyword(s):  
Wind Tunnel ◽  
High Speed ◽  
Large Scale ◽  
Wind Tunnel Testing ◽  
Tunnel Testing

Do elite soccer players cover longer distance when losing? Differences between attackers and defenders

2020 ◽  
pp. 174795412098227
Author(s):  
Carlos Lago-Peñas ◽  
Anton Kalén ◽  
Miguel Lorenzo-Martinez ◽  
Roberto López-Del Campo ◽  
Ricardo Resta ◽  
...  
Keyword(s):  
New York ◽  
High Speed ◽  
Large Scale ◽  
Tracking System ◽  
Soccer Players ◽  
Running Performance ◽  
Situational Variables ◽  
Total Distance ◽  
Professional Soccer ◽  
Score Line

This study aimed to evaluate the effects playing position, match location (home or away), quality of opposition (strong or weak), effective playing time (total time minus stoppages), and score-line on physical match performance in professional soccer players using a large-scale analysis. A total of 10,739 individual match observations of outfield players competing in the Spanish La Liga during the 2018–2019 season were recorded using a computerized tracking system (TRACAB, Chyronhego, New York, USA). The players were classified into five positions (central defenders, players = 94; external defenders, players = 82; central midfielders, players = 101; external midfielders, players = 72; and forwards, players = 67) and the following match running performance categories were considered: total distance covered, low-speed running (LSR) distance (0–14 km · h−1), medium-speed running (MSR) distance (14–21 km · h−1), high-speed running (HSR) distance (>21 km · h−1), very HSR (VHSR) distance (21–24 km · h−1), sprint distance (>24 km · h−1) Overall, match running performance was highly dependent on situational variables, especially the score-line condition (winning, drawing, losing). Moreover, the score-line affected players running performance differently depending on their playing position. Losing status increased the total distance and the distance covered at MSR, HSR, VHSR and Sprint by defenders, while attacking players showed the opposite trend. These findings may help coaches and managers to better understand the effects of situational variables on physical performance in La Liga and could be used to develop a model for predicting the physical activity profile in competition.

scholarly journals 1.5 °C degrowth scenarios suggest the need for new mitigation pathways

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Lorenz T. Keyßer ◽  
Manfred Lenzen
Keyword(s):  
Technological Change ◽  
High Speed ◽  
Large Scale ◽  
High Energy ◽  
Climate Mitigation ◽  
Intergovernmental Panel ◽  
Economic Output ◽  
Integrated Assessment Modelling ◽  
Negative Emissions ◽  
Energy Emissions

Abstract1.5  °C scenarios reported by the Intergovernmental Panel on Climate Change (IPCC) rely on combinations of controversial negative emissions and unprecedented technological change, while assuming continued growth in gross domestic product (GDP). Thus far, the integrated assessment modelling community and the IPCC have neglected to consider degrowth scenarios, where economic output declines due to stringent climate mitigation. Hence, their potential to avoid reliance on negative emissions and speculative rates of technological change remains unexplored. As a first step to address this gap, this paper compares 1.5  °C degrowth scenarios with IPCC archetype scenarios, using a simplified quantitative representation of the fuel-energy-emissions nexus. Here we find that the degrowth scenarios minimize many key risks for feasibility and sustainability compared to technology-driven pathways, such as the reliance on high energy-GDP decoupling, large-scale carbon dioxide removal and large-scale and high-speed renewable energy transformation. However, substantial challenges remain regarding political feasibility. Nevertheless, degrowth pathways should be thoroughly considered.

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