280,773 research outputs found
Blockchain-Based Federated Learning: Incentivizing Data Sharing and Penalizing Dishonest Behavior
With the increasing importance of data sharing for collaboration and
innovation, it is becoming more important to ensure that data is managed and
shared in a secure and trustworthy manner. Data governance is a common approach
to managing data, but it faces many challenges such as data silos, data
consistency, privacy, security, and access control. To address these
challenges, this paper proposes a comprehensive framework that integrates data
trust in federated learning with InterPlanetary File System, blockchain, and
smart contracts to facilitate secure and mutually beneficial data sharing while
providing incentives, access control mechanisms, and penalizing any dishonest
behavior. The experimental results demonstrate that the proposed model is
effective in improving the accuracy of federated learning models while ensuring
the security and fairness of the data-sharing process. The research paper also
presents a decentralized federated learning platform that successfully trained
a CNN model on the MNIST dataset using blockchain technology. The platform
enables multiple workers to train the model simultaneously while maintaining
data privacy and security. The decentralized architecture and use of blockchain
technology allow for efficient communication and coordination between workers.
This platform has the potential to facilitate decentralized machine learning
and support privacy-preserving collaboration in various domains.Comment: To appear in the 5th International Congress on Blockchain and
Applications (BLOCKCHAIN'23). Publish by the Lecture Notes in Networks and
Systems series of Springer Verla
100 MHz Amplitude and Polarization Modulated Optical Source for Free-Space Quantum Key Distribution at 850 nm
We report on an integrated photonic transmitter of up to 100 MHz repetition
rate, which emits pulses centered at 850 nm with arbitrary amplitude and
polarization. The source is suitable for free space quantum key distribution
applications. The whole transmitter, with the optical and electronic components
integrated, has reduced size and power consumption. In addition, the
optoelectronic components forming the transmitter can be space-qualified,
making it suitable for satellite and future space missions.Comment: 6 figures, 2 table
Securing personal distributed environments
The Personal Distributed Environment (PDE) is a new concept being developed by Mobile VCE allowing future mobile users flexible access to their information and services. Unlike traditional mobile communications, the PDE user no longer needs to establish his or her personal communication link solely through one subscribing network but rather a diversity of disparate devices and access technologies whenever and wherever he or she requires. Depending on the servicesâ availability and coverage in the location, the PDE communication configuration could be, for instance, via a mobile radio system and a wireless ad hoc network or a digital broadcast system and a fixed telephone network. This new form of communication configuration inherently imposes newer and higher security challenges relating to identity and authorising issues especially when the number of involved entities, accessible network nodes and service providers, builds up. These also include the issue of how the subscribed service and the userâs personal information can be securely and seamlessly handed over via multiple networks, all of which can be changing dynamically. Without such security, users and operators will not be prepared to trust their information to other networks
MLCapsule: Guarded Offline Deployment of Machine Learning as a Service
With the widespread use of machine learning (ML) techniques, ML as a service
has become increasingly popular. In this setting, an ML model resides on a
server and users can query it with their data via an API. However, if the
user's input is sensitive, sending it to the server is undesirable and
sometimes even legally not possible. Equally, the service provider does not
want to share the model by sending it to the client for protecting its
intellectual property and pay-per-query business model.
In this paper, we propose MLCapsule, a guarded offline deployment of machine
learning as a service. MLCapsule executes the model locally on the user's side
and therefore the data never leaves the client. Meanwhile, MLCapsule offers the
service provider the same level of control and security of its model as the
commonly used server-side execution. In addition, MLCapsule is applicable to
offline applications that require local execution. Beyond protecting against
direct model access, we couple the secure offline deployment with defenses
against advanced attacks on machine learning models such as model stealing,
reverse engineering, and membership inference
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