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University of Lugano
(36 results)-
White Papers
Making Strategy Work: A Literature Review On The Factors Influencing Strategy Implementation
February 1, 2008, 12:00am PST
Although formulating a consistent strategy is a difficult task for any management team, making that strategy work - implementing it throughout the organization - is even more difficult (Hrebiniak,...
Provided by University of Lugano
-
White Papers
High-Performance Neural Networks for Visual Object Classification
January 1, 2011, 12:00am PST
The authors present a fast, fully parameterizable GPU implementation of Convolutional Neural Network variants. The feature extractors are neither carefully designed nor pre-wired, but rather...
Provided by University of Lugano
-
White Papers
Handwritten Digit Recognition With a Committee of Deep Neural Nets on GPUs
March 23, 2011, 12:00am PDT
The competitive MNIST handwritten digit recognition benchmark has a long history of broken records since 1998. The most recent substantial improvement by others dates back 7 years (error rate...
Provided by University of Lugano
-
White Papers
A Formal Analysis of the Deferred Update Technique
July 25, 2007, 12:00am PDT
The deferred update technique is a widely used approach for building replicated database systems. Its fame stems from the fact that read-only transactions can execute locally to any single...
Provided by University of Lugano
-
White Papers
Exploiting Data Semantics to Discover, Extract, and Model Web Sources
October 7, 2008, 12:00am PDT
The authors describe DEIMOS, a system that automatically discovers and models new sources of information. The system exploits four core technologies developed by their group that makes an...
Provided by University of Lugano
-
White Papers
A Survey of RFID Privacy Approaches
May 5, 2008, 12:00am PDT
A bewildering number of proposals have offered solutions to the privacy problems inherent in RFID communication. This paper tries to give an overview of the currently discussed approaches and...
Provided by University of Lugano
-
White Papers
An Environment for Synchronous Software Development
March 6, 2009, 12:00am PST
Collaboration is essential for the development of complex software systems. When a team of developers is geographically distributed, collaboration aspects - such as awareness, communication and...
Provided by University of Lugano
-
White Papers
REMAN: A Pro-Active Reputation Management Infrastructure for Composite Web Services
February 12, 2009, 12:00am PST
Web services are the de-facto standard for the development of distributed applications executing in open environments. Web services are usually composed by means of languages like BPEL to provide...
Provided by University of Lugano
-
White Papers
Visual Exploration of Large-Scale Evolving Software
February 12, 2009, 12:00am PST
The comprehensive understanding of today's software systems is a daunting activity, because of the sheer size and complexity that such systems exhibit. Moreover, software systems evolve, which...
Provided by University of Lugano
-
White Papers
An Efficient Implementation of Reinforcement Learning Based Routing on Real WSN Hardware
August 15, 2008, 12:00am PDT
Efficient multi-hop data dissemination is a crucial building block to enable mature Wireless Sensor Network (WSN) applications. Exploiting machine learning for these routing problems has received...
Provided by University of Lugano
-
White Papers
FROMS: Feedback Routing for Optimizing Multiple Sinks in WSN With Reinforcement Learning
July 25, 2007, 12:00am PDT
In the domain of Wireless Sensor Networks (WSNs), information routing is both a fundamental and challenging problem. In this paper, the authors describe how information local to each node can be...
Provided by University of Lugano
-
White Papers
When Uncertainty Blows In The Orchard: Comovement And Volatility Risk Premia
June 30, 2009, 12:00am PDT
Writers of index options earn high returns due to a significant and high volatility risk premium, but writers of options in single-stock markets earn lower returns. Using an incomplete information...
Provided by University of Lugano
-
White Papers
Qos and Security in Energy-Harvesting Wireless Sensor Networks
June 28, 2010, 12:00am PDT
Wireless sensor networks are composed of small nodes that might be used for a variety of purposes. Nodes communicate together through a wireless connection that might be subject to different...
Provided by University of Lugano
-
White Papers
Froms: A Failure Tolerant and Mobility Enabled Multicast Routing Paradigm With Reinforcement Learning for WSNs
November 16, 2010, 12:00am PST
A growing class of Wireless Sensor Network (WSN) applications require the use of sensed data inside the network at multiple, possibly mobile base stations. Standard WSN routing techniques that...
Provided by University of Lugano
-
White Papers
Automated Performance Maintenance for Service Compositions
August 5, 2009, 12:00am PDT
Web service compositions, usually defined as BPEL processes, need to adapt to changes in their constituent web services, in order to maintain functionality and performance. Therefore, BPEL...
Provided by University of Lugano
-
White Papers
Byzantine Fault-Tolerance With Commutative Commands
September 19, 2011, 12:00am PDT
State machine replication is a popular approach to increasing the availability of computer services. While it has been largely studied in the presence of crash-stop failures and malicious...
Provided by University of Lugano
-
White Papers
Belisarius: BFT Storage With Confidentiality
June 8, 2011, 12:00am PDT
Traditional approaches to byzantine fault-tolerance have mostly avoided the problem of confidentiality. Current confidentiality-aware solutions rely on a heavy infrastructure investment or depend...
Provided by University of Lugano
-
White Papers
Probabilistic FIFO Ordering in Publish/Subscribe Networks
June 10, 2011, 12:00am PDT
In a best-effort publish/subscribe network, publications may be delivered out of order (e.g., violating FIFO order). The authors contend that the primary cause of such ordering violations is the...
Provided by University of Lugano
-
White Papers
Scalable Byzantine Fault-Tolerant Storage
April 21, 2011, 12:00am PDT
Byzantine fault-tolerance is a fundamental requirement for many contemporary services. Shorter development cycles, bigger server exposure to attacks, and an inherently hostile network have...
Provided by University of Lugano
-
White Papers
High Performance State-Machine Replication
April 4, 2011, 12:00am PDT
State-machine replication is a well-established approach to fault tolerance. The idea is to replicate a service on multiple servers so that it remains available despite the failure of one or more...
Provided by University of Lugano
-
White Papers
Byzantine Fault-Tolerant Deferred Update Replication
January 31, 2011, 12:00am PST
Replication is a well-established approach to increasing database availability. Many database replication protocols have been proposed for the crash-stop failure model, in which servers fail...
Provided by University of Lugano
-
White Papers
Multicoordinated Agreement for Groups of Agents
March 2, 2010, 12:00am PST
Agents in agreement protocols play well distinct roles. Proposers propose values to the acceptors, which will accept proposals and inform the learners so, they detect that an agreement has been...
Provided by University of Lugano
-
White Papers
Fast, Flexible, and Highly Resilient Genuine FIFO and Causal Multicast Algorithms
October 1, 2009, 12:00am PDT
Developing dependable distributed applications is not easy. The complexity stems from the asynchrony and unreliability of typical distributed systems: processes execute at different speeds and may...
Provided by University of Lugano
-
White Papers
Streamline: An Architecture for Overlay Multicast
May 15, 2009, 12:00am PDT
The authors propose Streamline, a two-layered architecture designed for media streaming in overlay networks. The first layer is a generic, customizable and lightweight protocol which is able to...
Provided by University of Lugano
-
White Papers
Pronto: High Availability for Standard Off-the-Shelf Databases
October 8, 2007, 12:00am PDT
Enterprise applications typically store their state in databases. If a database fails, the application is unavailable while the database recovers. Database recovery is time consuming because it...
Provided by University of Lugano
-
White Papers
Solving Atomic Multicast When Groups Crash
September 25, 2008, 12:00am PDT
In this paper, the authors study the atomic multicast problem, a fundamental abstraction for building fault-tolerant systems. In their model, processes are divided into non-empty and disjoint...
Provided by University of Lugano
-
White Papers
Correctness Criteria for Database Replication: Theoretical and Practical Aspects
August 25, 2008, 12:00am PDT
In this paper, the authors investigate correctness criteria for replicated databases from the client's perspective and present their uniform characterization. They further study the effects of...
Provided by University of Lugano
-
White Papers
A Probabilistic Analysis of Snapshot Isolation With Partial Replication
July 9, 2008, 12:00am PDT
Snapshot isolation has received a considerable amount of attention in the context of full database replication. Such popularity is mainly because read-only transactions executing under snapshot...
Provided by University of Lugano
-
White Papers
Multicoordinated Agreement Protocols for Higher Availability
May 3, 2008, 12:00am PDT
Adaptability and graceful degradation are important features in distributed systems. Yet, consensus and other agreement protocols, basic building blocks of reliable distributed systems, lack these...
Provided by University of Lugano
-
White Papers
A Gambling Approach to Scalable Resource-Aware Streaming
July 20, 2007, 12:00am PDT
In this paper, the authors propose a resource-aware solution to achieving reliable and scalable stream diffusion in a probabilistic model, i.e., where communication links and processes are subject...
Provided by University of Lugano
-
White Papers
A Framework for Realistic Simulation of Networked Multi-Robot Systems
April 1, 2012, 12:00am PDT
Networked robotics is an area that integrates multi-robot and network technology. The characteristics and the reliability of the communication environment play a fundamental role shaping and...
Provided by University of Lugano
-
White Papers
Convergence Results for Vehicle Routing Problems With Stochastic Demands
November 1, 2011, 12:00am PDT
In this paper, the authors investigate two variants of the Stochastic Vehicle Routing Problem: The Vehicle Routing Problem with Stochastic Demands and the Vehicle Routing Problem with Stochastic...
Provided by University of Lugano
-
White Papers
Minimum Power Multicasting in Wireless Networks Under Probabilistic Node Failures
February 20, 2009, 12:00am PST
In this paper, the authors deal with a new probabilistic extension of the Minimum Power Multi-cast (MPM) problem for wireless networks. The deterministic MPM problem consists in assigning...
Provided by University of Lugano
-
Whitepapers
Fully Decentralized Estimation of Some Global Properties of a Network
March 8, 2012, 12:00am PST
It is often beneficial to architect networks and overlays as fully decentralized systems, in the sense that any computation (e.g., routing or search) would only use local information, and no...
Provided by University of Lugano
-
Whitepapers
The Complexity of Data Aggregation in Directed Networks
October 30, 2011, 12:00am PDT
Consider a wireless network comprising two base stations, transmitting at high power, and an unknown number of client devices which communicate only with the base stations. The base stations are...
Provided by University of Lugano
-
Whitepapers
Distributed Computation in Dynamic Networks : Technical Report
November 10, 2009, 12:00am PST
In this paper, the authors investigate distributed computation in dynamic networks in which the network topology changes from round to round. They consider a worst-case model in which the...
Provided by University of Lugano
-
Whitepapers
Distributed Computation in Dynamic Networks : Technical Report
November 10, 2009, 12:00am PST
In this paper, the authors investigate distributed computation in dynamic networks in which the network topology changes from round to round. They consider a worst-case model in which the...
Provided by University of Lugano
-
Whitepapers
The Complexity of Data Aggregation in Directed Networks
October 30, 2011, 12:00am PDT
Consider a wireless network comprising two base stations, transmitting at high power, and an unknown number of client devices which communicate only with the base stations. The base stations are...
Provided by University of Lugano
-
Whitepapers
Fully Decentralized Estimation of Some Global Properties of a Network
March 8, 2012, 12:00am PST
It is often beneficial to architect networks and overlays as fully decentralized systems, in the sense that any computation (e.g., routing or search) would only use local information, and no...
Provided by University of Lugano
-
White Papers
Minimum Power Multicasting in Wireless Networks Under Probabilistic Node Failures
February 20, 2009, 12:00am PST
In this paper, the authors deal with a new probabilistic extension of the Minimum Power Multi-cast (MPM) problem for wireless networks. The deterministic MPM problem consists in assigning...
Provided by University of Lugano
-
White Papers
Convergence Results for Vehicle Routing Problems With Stochastic Demands
November 1, 2011, 12:00am PDT
In this paper, the authors investigate two variants of the Stochastic Vehicle Routing Problem: The Vehicle Routing Problem with Stochastic Demands and the Vehicle Routing Problem with Stochastic...
Provided by University of Lugano
-
White Papers
A Framework for Realistic Simulation of Networked Multi-Robot Systems
April 1, 2012, 12:00am PDT
Networked robotics is an area that integrates multi-robot and network technology. The characteristics and the reliability of the communication environment play a fundamental role shaping and...
Provided by University of Lugano
-
White Papers
A Gambling Approach to Scalable Resource-Aware Streaming
July 20, 2007, 12:00am PDT
In this paper, the authors propose a resource-aware solution to achieving reliable and scalable stream diffusion in a probabilistic model, i.e., where communication links and processes are subject...
Provided by University of Lugano
-
White Papers
Multicoordinated Agreement Protocols for Higher Availability
May 3, 2008, 12:00am PDT
Adaptability and graceful degradation are important features in distributed systems. Yet, consensus and other agreement protocols, basic building blocks of reliable distributed systems, lack these...
Provided by University of Lugano
-
White Papers
A Probabilistic Analysis of Snapshot Isolation With Partial Replication
July 9, 2008, 12:00am PDT
Snapshot isolation has received a considerable amount of attention in the context of full database replication. Such popularity is mainly because read-only transactions executing under snapshot...
Provided by University of Lugano
-
White Papers
Correctness Criteria for Database Replication: Theoretical and Practical Aspects
August 25, 2008, 12:00am PDT
In this paper, the authors investigate correctness criteria for replicated databases from the client's perspective and present their uniform characterization. They further study the effects of...
Provided by University of Lugano
-
White Papers
Solving Atomic Multicast When Groups Crash
September 25, 2008, 12:00am PDT
In this paper, the authors study the atomic multicast problem, a fundamental abstraction for building fault-tolerant systems. In their model, processes are divided into non-empty and disjoint...
Provided by University of Lugano
-
White Papers
Pronto: High Availability for Standard Off-the-Shelf Databases
October 8, 2007, 12:00am PDT
Enterprise applications typically store their state in databases. If a database fails, the application is unavailable while the database recovers. Database recovery is time consuming because it...
Provided by University of Lugano
-
White Papers
Streamline: An Architecture for Overlay Multicast
May 15, 2009, 12:00am PDT
The authors propose Streamline, a two-layered architecture designed for media streaming in overlay networks. The first layer is a generic, customizable and lightweight protocol which is able to...
Provided by University of Lugano
-
White Papers
Fast, Flexible, and Highly Resilient Genuine FIFO and Causal Multicast Algorithms
October 1, 2009, 12:00am PDT
Developing dependable distributed applications is not easy. The complexity stems from the asynchrony and unreliability of typical distributed systems: processes execute at different speeds and may...
Provided by University of Lugano
-
White Papers
Multicoordinated Agreement for Groups of Agents
March 2, 2010, 12:00am PST
Agents in agreement protocols play well distinct roles. Proposers propose values to the acceptors, which will accept proposals and inform the learners so, they detect that an agreement has been...
Provided by University of Lugano
-
White Papers
Byzantine Fault-Tolerant Deferred Update Replication
January 31, 2011, 12:00am PST
Replication is a well-established approach to increasing database availability. Many database replication protocols have been proposed for the crash-stop failure model, in which servers fail...
Provided by University of Lugano
-
White Papers
High Performance State-Machine Replication
April 4, 2011, 12:00am PDT
State-machine replication is a well-established approach to fault tolerance. The idea is to replicate a service on multiple servers so that it remains available despite the failure of one or more...
Provided by University of Lugano
-
White Papers
Scalable Byzantine Fault-Tolerant Storage
April 21, 2011, 12:00am PDT
Byzantine fault-tolerance is a fundamental requirement for many contemporary services. Shorter development cycles, bigger server exposure to attacks, and an inherently hostile network have...
Provided by University of Lugano
-
White Papers
Probabilistic FIFO Ordering in Publish/Subscribe Networks
June 10, 2011, 12:00am PDT
In a best-effort publish/subscribe network, publications may be delivered out of order (e.g., violating FIFO order). The authors contend that the primary cause of such ordering violations is the...
Provided by University of Lugano
-
White Papers
Belisarius: BFT Storage With Confidentiality
June 8, 2011, 12:00am PDT
Traditional approaches to byzantine fault-tolerance have mostly avoided the problem of confidentiality. Current confidentiality-aware solutions rely on a heavy infrastructure investment or depend...
Provided by University of Lugano
-
White Papers
Byzantine Fault-Tolerance With Commutative Commands
September 19, 2011, 12:00am PDT
State machine replication is a popular approach to increasing the availability of computer services. While it has been largely studied in the presence of crash-stop failures and malicious...
Provided by University of Lugano
-
White Papers
Automated Performance Maintenance for Service Compositions
August 5, 2009, 12:00am PDT
Web service compositions, usually defined as BPEL processes, need to adapt to changes in their constituent web services, in order to maintain functionality and performance. Therefore, BPEL...
Provided by University of Lugano
-
White Papers
Froms: A Failure Tolerant and Mobility Enabled Multicast Routing Paradigm With Reinforcement Learning for WSNs
November 16, 2010, 12:00am PST
A growing class of Wireless Sensor Network (WSN) applications require the use of sensed data inside the network at multiple, possibly mobile base stations. Standard WSN routing techniques that...
Provided by University of Lugano
-
White Papers
Qos and Security in Energy-Harvesting Wireless Sensor Networks
June 28, 2010, 12:00am PDT
Wireless sensor networks are composed of small nodes that might be used for a variety of purposes. Nodes communicate together through a wireless connection that might be subject to different...
Provided by University of Lugano
-
White Papers
When Uncertainty Blows In The Orchard: Comovement And Volatility Risk Premia
June 30, 2009, 12:00am PDT
Writers of index options earn high returns due to a significant and high volatility risk premium, but writers of options in single-stock markets earn lower returns. Using an incomplete information...
Provided by University of Lugano
-
White Papers
FROMS: Feedback Routing for Optimizing Multiple Sinks in WSN With Reinforcement Learning
July 25, 2007, 12:00am PDT
In the domain of Wireless Sensor Networks (WSNs), information routing is both a fundamental and challenging problem. In this paper, the authors describe how information local to each node can be...
Provided by University of Lugano
-
White Papers
An Efficient Implementation of Reinforcement Learning Based Routing on Real WSN Hardware
August 15, 2008, 12:00am PDT
Efficient multi-hop data dissemination is a crucial building block to enable mature Wireless Sensor Network (WSN) applications. Exploiting machine learning for these routing problems has received...
Provided by University of Lugano
-
White Papers
Visual Exploration of Large-Scale Evolving Software
February 12, 2009, 12:00am PST
The comprehensive understanding of today's software systems is a daunting activity, because of the sheer size and complexity that such systems exhibit. Moreover, software systems evolve, which...
Provided by University of Lugano
-
White Papers
REMAN: A Pro-Active Reputation Management Infrastructure for Composite Web Services
February 12, 2009, 12:00am PST
Web services are the de-facto standard for the development of distributed applications executing in open environments. Web services are usually composed by means of languages like BPEL to provide...
Provided by University of Lugano
-
White Papers
An Environment for Synchronous Software Development
March 6, 2009, 12:00am PST
Collaboration is essential for the development of complex software systems. When a team of developers is geographically distributed, collaboration aspects - such as awareness, communication and...
Provided by University of Lugano
-
White Papers
A Survey of RFID Privacy Approaches
May 5, 2008, 12:00am PDT
A bewildering number of proposals have offered solutions to the privacy problems inherent in RFID communication. This paper tries to give an overview of the currently discussed approaches and...
Provided by University of Lugano
-
White Papers
Exploiting Data Semantics to Discover, Extract, and Model Web Sources
October 7, 2008, 12:00am PDT
The authors describe DEIMOS, a system that automatically discovers and models new sources of information. The system exploits four core technologies developed by their group that makes an...
Provided by University of Lugano
-
White Papers
A Formal Analysis of the Deferred Update Technique
July 25, 2007, 12:00am PDT
The deferred update technique is a widely used approach for building replicated database systems. Its fame stems from the fact that read-only transactions can execute locally to any single...
Provided by University of Lugano
-
White Papers
Handwritten Digit Recognition With a Committee of Deep Neural Nets on GPUs
March 23, 2011, 12:00am PDT
The competitive MNIST handwritten digit recognition benchmark has a long history of broken records since 1998. The most recent substantial improvement by others dates back 7 years (error rate...
Provided by University of Lugano
-
White Papers
High-Performance Neural Networks for Visual Object Classification
January 1, 2011, 12:00am PST
The authors present a fast, fully parameterizable GPU implementation of Convolutional Neural Network variants. The feature extractors are neither carefully designed nor pre-wired, but rather...
Provided by University of Lugano
-
White Papers
Making Strategy Work: A Literature Review On The Factors Influencing Strategy Implementation
February 1, 2008, 12:00am PST
Although formulating a consistent strategy is a difficult task for any management team, making that strategy work - implementing it throughout the organization - is even more difficult (Hrebiniak,...
Provided by University of Lugano
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