Coordination Model for Real-Time Collaborative Editors

Imine, Abdessamad

doi:10.1007/978-3-642-02053-7_12

Cited by 24 publications

(48 citation statements)

References 17 publications

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“…For more details see e.g. [4]. Our objective here is to develop on the top of this framework a security layer for controlling access to the shared documents.…”

Section: Fig 1 Serialization Of Concurrent Cooperative Operationsmentioning

confidence: 99%

“…To detect causal dependency and concurrent relations between cooperative requests, we use a technique proposed in [4] which allows for dynamic groups as it is independent of the number of users (unlike to vector timestamp-based technique [3]). This technique builds a dependency tree where each request q has only to store in q.a the request identity whose it directly depends on.…”

Section: Cooperative and Administrative Requestsmentioning

confidence: 99%

“…This technique builds a dependency tree where each request q has only to store in q.a the request identity whose it directly depends on. For more details, see [4]. We consider an administrative request r as the triple r = (id, o, v) where: (i) id is the identity of the administrator; (ii) o is the administrative operation (see Definition 3); (iii) v is the last version number of the policy object.…”

Section: Cooperative and Administrative Requestsmentioning

confidence: 99%

“…Each site stores all cooperative requests in log H and administrative requests (AddAuth and DelAuth) in a log L. Our concurrency control procedure is given in Algorithm 1. It should be noted that Algorithm 1 is mainly based on framework proposed in [4]. This framework relies on (i) using OT approach [3] in order to execute cooperative requests in any order; (ii) using a particular class of logs, called canonical, where insertion requests are stored before deletion requests in order to ensure data convergence.…”

Section: Control Proceduresmentioning

confidence: 99%

“…Finally, the request q (the result of ComputeBF) is propagated to all sites in order to be executed on other copies of the shared document. For more details on functions ComputeBF and Canonize, see [4].…”

Section: Control Proceduresmentioning

confidence: 99%

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A Flexible Access Control Model for Distributed Collaborative Editors

Imine

Cherif

Rusinowitch

2009

Lecture Notes in Computer Science

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Abstract. Distributed Collaborative Editors (DCE) provide computer support for modifying simultaneously shared documents, such as articles, wiki pages and programming source code, by dispersed users. Controlling access in such systems is still a challenging problem, as they need dynamic access changes and low latency access to shared documents. In this paper, we propose a flexible access control model where the shared document and its authorization policy are replicated at the local memory of each user. To deal with latency and dynamic access changes, we use an optimistic access control technique in such a way that enforcement of authorizations is retroactive. We show that naive coordination between updates of both copies can create security holes on the shared document, by permitting illegal modifications or rejecting legal modifications. Finally, we present a prototype for managing authorizations in collaborative editing work which may be deployed easily on P2P networks.

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“…For more details see e.g. [4]. Our objective here is to develop on the top of this framework a security layer for controlling access to the shared documents.…”

Section: Fig 1 Serialization Of Concurrent Cooperative Operationsmentioning

confidence: 99%

Section: Cooperative and Administrative Requestsmentioning

confidence: 99%

Section: Cooperative and Administrative Requestsmentioning

confidence: 99%

Section: Control Proceduresmentioning

confidence: 99%

Section: Control Proceduresmentioning

confidence: 99%

See 3 more Smart Citations

A Flexible Access Control Model for Distributed Collaborative Editors

Imine

Cherif

Rusinowitch

2009

Lecture Notes in Computer Science

Self Cite

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Mobile Co-Authoring of Linked Data in the Cloud

Mechaoui

Guetmi

Imine

2015

Communications in Computer and Information Science

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International audienceThe powerful evolution of hardware, software and data connectivity of mobile devices (such as smartphones and tablets) stimulates people to publish and share their personal data (like social network information or sensor readings) independently of spatial and temporal constraints. To do this, the development of an efficient semantic web collaborative editor for mobile devices is needed. However, collaboratively editing a shared semantic web document in real-time through ad-hoc peer-to-peer mobile networks requires increasing amounts of computation, data storage and network communication. In this paper, we propose a new cloud service-based model that allows a real-time co-authoring of Linked-Data (LD) as a RDF (Resource Description Framework) graph using mobile devices. Our model is built upon two layers: (i) cloning engine that enables users to clone their mobile devices in the cloud to delegate the overload of collaborative tasks and provides peer-to-peer networks where users can create ad-hoc groups; (ii) Collaborative engine that allows updating freely and concurrently a shared RDF graph in peer-to-peer fashion without requiring a central server. This work represents a step forward toward a practical and flexible co-authoring environment for LD

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A Cloud-Based Reusable Design for Mobile Data Sharing

Guetmi¹,

Imine²

2015

Model and Data Engineering

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International audienceMobile devices have experienced a huge progress in computing capacity, storage and visualization of data. They are becoming the device of choice for operating a large variety of applications while supporting real-time collaboration of people and their mobility. Despite this progress, the energy consumption and the network coverage remain a serious problem against an efficient and continuous use of these mobile collaborative applications and a great challenge for their designers and developers. To address these issues, this paper describes design patterns that help modeling mobile collaborative applications enabling real-time data sharing through the cloud. Our design model consists of two levels: the first one provides self-protocol to create clones of mobile devices, manage users’ groups and recover failed clones in the cloud. As for the second level, it supports group collaboration mechanisms for data sharing between mobile users via their clones. Our patterns have been used as a basis for the design of SocialVPN, a cloud-based platform enabling mobile users to build and exploit their own virtual social networks

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Coordination Model for Real-Time Collaborative Editors

Cited by 24 publications

References 17 publications

A Flexible Access Control Model for Distributed Collaborative Editors

A Flexible Access Control Model for Distributed Collaborative Editors

Mobile Co-Authoring of Linked Data in the Cloud

A Cloud-Based Reusable Design for Mobile Data Sharing

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