University of Fribourg

Displaying 1-16 of 16 results

  • White Papers // Jul 2011

    Optimising P2P Overlays for Pervasive Environments

    In this paper, the authors propose a topology optimisation algorithm for multi-layer P2P overlays on top of pervasive computing environments based on ant algorithms for the distributed network-wide collection of information. Their goal is to construct a robust and responsive overlay with low overhead so that it suits the highly...

    Provided By University of Fribourg

  • White Papers // Jun 2011

    MANET Routing Protocols Based on Swarm Intelligence

    A Mobile Ad-hoc NETwork (MANET) is formed by a group of mobile nodes which communicate over wireless connection. The nature of this kind of networks makes them suitable for deployment in places where network infrastructure is hard to build and maintain. They are flexible, adaptive and require few resources but...

    Provided By University of Fribourg

  • White Papers // May 2011

    A Framework for Practical Universally Composable Zero-Knowledge Protocols

    Zero-Knowledge Proofs of Knowledge (ZK-PoK) for discrete logarithms and related problems are indispensable for practical cryptographic protocols. At Eurocrypt 2009, Camenisch, Kiayias, and Yung provided a specification language (the CKY-language) for such protocols, which allows one to modularly design and analyze cryptographic protocols: protocol designers just need to specify the...

    Provided By University of Fribourg

  • White Papers // May 2011

    A JADE Middleware for Grid Inter-Cooperated Infrastructures

    During the past few years much effort has been put into developing interoperable grid models suitable of defining a decentralized control setting. Such environments may define new rules and actions to internal Virtual Organisation (VO) members and therefore posing new challenges towards to an extended cooperation model of grids. Particularly,...

    Provided By University of Fribourg

  • White Papers // Feb 2011

    Exploiting Bio-Inspired Approaches for the Monitoring of Pervasive Environments

    BioMPE (Bio-inspired Monitoring of Pervasive Environments) is a research project undertaken by the Pervasive and Artificial Intelligence research group at the Department of Informatics, University of Fribourg in Switzerland. The main goal of BioMPE is to build an intelligent and context-aware pervasive computing middleware to address the issues of reliability...

    Provided By University of Fribourg

  • White Papers // Feb 2011

    Improving Performance in Load Balancing Problem on the Grid Computing System

    Load balancing is a technique to improve resources, utilizing parallelism, exploiting throughput managing and to reduce response time through proper distribution of the application. Load balancing strategies is always used for the emergence of distributed systems. Generally there are three types of phases related to load balancing, i.e. information collection,...

    Provided By University of Fribourg

  • White Papers // Jan 2011

    Transaction Fees And Optimal Rebalancing In The Growth-Optimal Portfolio

    The growth-optimal portfolio optimization strategy pioneered by Kelly is based on constant portfolio rebalancing which makes it sensitive to transaction fees. The authors examine the effect of fees on an example of a risky asset with a binary return distribution and show that the fees may give rise to an...

    Provided By University of Fribourg

  • White Papers // Oct 2010

    SSP: Smart Service Provider a Smart Environment Providing Contextual Services on Android Mobile Devices

    Smart environments are increasingly available and support users in their daily activities in different ways. This paper presents a service-based approach for users active in a smart environment such as a building, campus or public place. The concept is illustrated through the SSP project which provides environment-specific and contextual services...

    Provided By University of Fribourg

  • White Papers // Sep 2010

    Giving RFID a REST: Building a Web-Enabled EPCIS

    The Electronic Product Code Information Service (EPCIS) is a standard which defines interfaces enabling RFID events to be captured and queried. The query interface, implemented with WS- Web services, enables business applications to consume and share data within and across companies, to form a global network of independent EPCIS instances....

    Provided By University of Fribourg

  • White Papers // Jan 2010

    Enabling Efficient Information Discovery in a Self-Structured Grid

    One of the key success factors enabling the deployment of large scale grid systems is the existence of efficient resource discovery mechanisms. Accordingly, the main issues to be addressed by such a grid information system are those of scalability and minimal network overhead. In this respect, the authors propose a...

    Provided By University of Fribourg

  • White Papers // Nov 2009

    Topology Management in Heterogeneous P2P Overlay Networks

    The deployment of wireless communication technologies has led to significant research in the area of heterogeneous network management. Pervasive computing applications based on networks with both wired and wireless connections involve collections of heterogeneous and resource-limited devices, typically operated over ad-hoc, completely decentralized networks and without requiring dedicated infrastructure support....

    Provided By University of Fribourg

  • White Papers // Oct 2009

    Effects of User Tastes on Personalized Recommendation

    In this paper, based on a weighted projection of the user-object bipartite network, the authors study the effects of user tastes on the mass-diffusion-based personalized recommendation algorithm, where a user's tastes or interests are defined by the average degree of the objects he has collected. They argue that the initial...

    Provided By University of Fribourg

  • White Papers // Sep 2009

    EAP-TPM: A New Authentication Protocol for IEEE 802.11 Based Network

    Nowadays authentication at public wireless hotspots is still not very comfortable for normal users. Most of the hotspots provide a captive portal asking the user for credentials or his phone number to send him an One-Time Password (OTP). This is uncomfortable especially on embedded devices like mobile phones due to...

    Provided By University of Fribourg

  • White Papers // Jul 2009

    Degree Correlation Effect of Bipartite Network on Personalized Recommendation

    In this paper, by introducing a new user similarity index base on the diffusion process, the authors propose a Modified Collaborative Filtering (MCF) algorithm, which has remarkably higher accuracy than the standard collaborative filtering. In the proposed algorithm, the degree correlation between users and objects is taken into account and...

    Provided By University of Fribourg

  • White Papers // Mar 2009

    Consequences Of Debt Capitalization: Property Ownership And Debt/Tax Choice

    Public debts capitalize into property prices. Therefore, property owners tend to favor tax over debt financing for government spending. In contrast, tenants do not suffer from debt capitalization. Thus, they tend to favor debt over tax financing. The authors' model of the resulting democratic fight between property owners and tenants...

    Provided By University of Fribourg

  • White Papers // Dec 2008

    Debt Capitalization: A New Perspective On Ricardian Equivalence

    Rational individuals know that present government debts transform into higher future taxes. The Ricardian equivalence implies that the burden of the debt is not shifted between generations because of compensating intergenerational transfers. While the assumptions for Ricardian equivalence to hold are quite demanding, the authors argue that there exists another...

    Provided By University of Fribourg

  • White Papers // Sep 2009

    EAP-TPM: A New Authentication Protocol for IEEE 802.11 Based Network

    Nowadays authentication at public wireless hotspots is still not very comfortable for normal users. Most of the hotspots provide a captive portal asking the user for credentials or his phone number to send him an One-Time Password (OTP). This is uncomfortable especially on embedded devices like mobile phones due to...

    Provided By University of Fribourg

  • White Papers // Oct 2009

    Effects of User Tastes on Personalized Recommendation

    In this paper, based on a weighted projection of the user-object bipartite network, the authors study the effects of user tastes on the mass-diffusion-based personalized recommendation algorithm, where a user's tastes or interests are defined by the average degree of the objects he has collected. They argue that the initial...

    Provided By University of Fribourg

  • White Papers // Jul 2009

    Degree Correlation Effect of Bipartite Network on Personalized Recommendation

    In this paper, by introducing a new user similarity index base on the diffusion process, the authors propose a Modified Collaborative Filtering (MCF) algorithm, which has remarkably higher accuracy than the standard collaborative filtering. In the proposed algorithm, the degree correlation between users and objects is taken into account and...

    Provided By University of Fribourg

  • White Papers // Jan 2011

    Transaction Fees And Optimal Rebalancing In The Growth-Optimal Portfolio

    The growth-optimal portfolio optimization strategy pioneered by Kelly is based on constant portfolio rebalancing which makes it sensitive to transaction fees. The authors examine the effect of fees on an example of a risky asset with a binary return distribution and show that the fees may give rise to an...

    Provided By University of Fribourg

  • White Papers // Sep 2010

    Giving RFID a REST: Building a Web-Enabled EPCIS

    The Electronic Product Code Information Service (EPCIS) is a standard which defines interfaces enabling RFID events to be captured and queried. The query interface, implemented with WS- Web services, enables business applications to consume and share data within and across companies, to form a global network of independent EPCIS instances....

    Provided By University of Fribourg

  • White Papers // May 2011

    A Framework for Practical Universally Composable Zero-Knowledge Protocols

    Zero-Knowledge Proofs of Knowledge (ZK-PoK) for discrete logarithms and related problems are indispensable for practical cryptographic protocols. At Eurocrypt 2009, Camenisch, Kiayias, and Yung provided a specification language (the CKY-language) for such protocols, which allows one to modularly design and analyze cryptographic protocols: protocol designers just need to specify the...

    Provided By University of Fribourg

  • White Papers // Feb 2011

    Improving Performance in Load Balancing Problem on the Grid Computing System

    Load balancing is a technique to improve resources, utilizing parallelism, exploiting throughput managing and to reduce response time through proper distribution of the application. Load balancing strategies is always used for the emergence of distributed systems. Generally there are three types of phases related to load balancing, i.e. information collection,...

    Provided By University of Fribourg

  • White Papers // Mar 2009

    Consequences Of Debt Capitalization: Property Ownership And Debt/Tax Choice

    Public debts capitalize into property prices. Therefore, property owners tend to favor tax over debt financing for government spending. In contrast, tenants do not suffer from debt capitalization. Thus, they tend to favor debt over tax financing. The authors' model of the resulting democratic fight between property owners and tenants...

    Provided By University of Fribourg

  • White Papers // Dec 2008

    Debt Capitalization: A New Perspective On Ricardian Equivalence

    Rational individuals know that present government debts transform into higher future taxes. The Ricardian equivalence implies that the burden of the debt is not shifted between generations because of compensating intergenerational transfers. While the assumptions for Ricardian equivalence to hold are quite demanding, the authors argue that there exists another...

    Provided By University of Fribourg

  • White Papers // Jun 2011

    MANET Routing Protocols Based on Swarm Intelligence

    A Mobile Ad-hoc NETwork (MANET) is formed by a group of mobile nodes which communicate over wireless connection. The nature of this kind of networks makes them suitable for deployment in places where network infrastructure is hard to build and maintain. They are flexible, adaptive and require few resources but...

    Provided By University of Fribourg

  • White Papers // May 2011

    A JADE Middleware for Grid Inter-Cooperated Infrastructures

    During the past few years much effort has been put into developing interoperable grid models suitable of defining a decentralized control setting. Such environments may define new rules and actions to internal Virtual Organisation (VO) members and therefore posing new challenges towards to an extended cooperation model of grids. Particularly,...

    Provided By University of Fribourg

  • White Papers // Jul 2011

    Optimising P2P Overlays for Pervasive Environments

    In this paper, the authors propose a topology optimisation algorithm for multi-layer P2P overlays on top of pervasive computing environments based on ant algorithms for the distributed network-wide collection of information. Their goal is to construct a robust and responsive overlay with low overhead so that it suits the highly...

    Provided By University of Fribourg

  • White Papers // Feb 2011

    Exploiting Bio-Inspired Approaches for the Monitoring of Pervasive Environments

    BioMPE (Bio-inspired Monitoring of Pervasive Environments) is a research project undertaken by the Pervasive and Artificial Intelligence research group at the Department of Informatics, University of Fribourg in Switzerland. The main goal of BioMPE is to build an intelligent and context-aware pervasive computing middleware to address the issues of reliability...

    Provided By University of Fribourg

  • White Papers // Oct 2010

    SSP: Smart Service Provider a Smart Environment Providing Contextual Services on Android Mobile Devices

    Smart environments are increasingly available and support users in their daily activities in different ways. This paper presents a service-based approach for users active in a smart environment such as a building, campus or public place. The concept is illustrated through the SSP project which provides environment-specific and contextual services...

    Provided By University of Fribourg

  • White Papers // Jan 2010

    Enabling Efficient Information Discovery in a Self-Structured Grid

    One of the key success factors enabling the deployment of large scale grid systems is the existence of efficient resource discovery mechanisms. Accordingly, the main issues to be addressed by such a grid information system are those of scalability and minimal network overhead. In this respect, the authors propose a...

    Provided By University of Fribourg

  • White Papers // Nov 2009

    Topology Management in Heterogeneous P2P Overlay Networks

    The deployment of wireless communication technologies has led to significant research in the area of heterogeneous network management. Pervasive computing applications based on networks with both wired and wireless connections involve collections of heterogeneous and resource-limited devices, typically operated over ad-hoc, completely decentralized networks and without requiring dedicated infrastructure support....

    Provided By University of Fribourg