Pascal Molli

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Pascal Molli is an author.

Publications

Only those publications related to wikis are shown here.
Title Keyword(s) Published in Language DateThis property is a special property in this wiki. Abstract R C
BlueFinder: Recommending wikipedia links using DBpedia properties DBpedia
Recommendation
Wikipedia
Proceedings of the 3rd Annual ACM Web Science Conference, WebSci 2013 English 2013 DBpedia knowledge base has been built from data extracted from Wikipedia. However, many existing relations among resources in DBpedia are missing links among articles from Wikipedia. In some cases, adding these links into Wikipedia will enrich Wikipedia content and therefore will enable better navigation. In previous work, we proposed PIA algorithm that predicts the best link to connect two articles in Wikipedia corresponding to those related by a semantic property in DB-pedia and respecting the Wikipedia convention. PIA calculates this link as a path query. After introducing PIA results in Wikipedia, most of them were accepted by the Wikipedia community. However, some were rejected because PIA predicts path queries that are too general. In this paper, we report the BlueFinder collaborative filtering algorithm that fixes PIA miscalculation. It is sensible to the specificity of the resource types. According to the conducted experimentation we found out that BlueFinder is a better solution than PIA because it solves more cases with a better recall. Copyright 2013 ACM. 0 0
From DBpedia to Wikipedia: Filling the gap by discovering Wikipedia conventions DBpedia
Wikipedia
Wikipedia Conventions
Proceedings - 2012 IEEE/WIC/ACM International Conference on Web Intelligence, WI 2012 English 2012 Many relations existing in DBpedia are missing in Wikipedia yielding up an information gap between the semantic web and the social web. Inserting these missing relations requires to automatically discover Wikipedia conventions. From pairs linked by a property p in DBpedia, we find path queries that link the same pairs in Wikipedia. We make the hypothesis that the shortest path query with maximal containment captures the Wikipedia convention for p. We computed missing links and conventions for different DBpedia queries. Next, we inserted some missing links according to computed conventions in Wikipedia and evaluated Wikipedians feedback. Nearly all contributions has been accepted. In this paper, we detail the path indexing algorithms, the results of evaluations and give some details about social feedback. 0 0
Improving wikipedia with DBpedia DBpedia
Path query
Wikipedia
WWW'12 - Proceedings of the 21st Annual Conference on World Wide Web Companion English 2012 DBpedia is the semantic mirror of Wikipedia. DBpedia extracts information from Wikipedia and stores it in a semantic knowledge base. This semantic feature allows complex semantic queries, which could infer new relations that are missing in Wikipedia. This is an interesting source of knowledge to increase Wikipedia content. But, what is the best way to add these new relations following the Wikipedia conventions? In this paper, we propose a path indexing algorithm (PIA) which takes the resulting set of a DBPedia query and discovers the best representative path in Wikipedia. We evaluate the algorithm with real data sets from DBpedia. Copyright is held by the International World Wide Web Conference Committee (IW3C2). 0 0
Knowledge continuous integration process (K-CIP) Continuous integration process
Knowledge management
Ontology
Semantic wiki
WWW'12 - Proceedings of the 21st Annual Conference on World Wide Web Companion English 2012 Social semantic web creates read/write spaces where users and smart agents collaborate to produce knowledge readable by humans and machines. An important issue concerns the ontology evolution and evaluation in man-machine collaboration. How to perform a change on ontologies in a social semantic space that currently uses these ontologies through requests ? In this paper, we propose to implement a continuous knowledge integration process named K-CIP. We take advantage of man-machine collaboration to transform feedback of people into tests. This paper presents how K-CIP can be deployed to allow fruitful man-machine collaboration in the context of the WikiTaaable system. Copyright is held by the International World Wide Web Conference Committee (IW3C2). 0 0
Building a Collaborative Peer-to-Peer Wiki System on a Structured Overlay Computer Networks English 2010 The ever growing request for digital information raises the need for content distribution architectures providing high storage capacity, data availability and good performance. While many simple solutions for scalable distribution of quasi-static content exist, there are still no approaches that can ensure both scalability and consistency for the case of highly dynamic content, such as the data managed inside wikis. We propose a peer-to-peer solution for distributing and managing dynamic content, that combines two widely studied technologies: Distributed HashTables (DHT) and optimistic replication. In our “universal wiki” engine architecture (UniWiki), on top of a reliable, inexpensive and consistent DHT-based storage, any number of front-ends can be added, ensuring both read and write scalability, as well as suitability for large-scale scenarios. The implementation is based on Damon, a distributed AOP middleware, thus separating distribution, replication, and consistency responsibilities, and also making our system transparently usable by third party wiki engines. Finally, UniWiki has been proved viable and fairly efficient in large-scale scenarios. 0 0
DSMW: Distributed Semantic MediaWiki Lecture Notes in Computer Science English 2010 DSMW is an extension to Semantic Mediawiki (SMW), it allows to create a network of SMW servers that share common semantic wiki pages. DSMW users can create communication channels between servers and use a publish-subscribe approach to manage the change propagation. DSMW synchronizes concurrent updates of shared semantic pages to ensure their consistency. It offers new collaboration modes to semantic wiki users and supports dataflow-oriented processes. 0 0
Human-machine collaboration for enriching semantic wikis using formal concept analysis Formal concept analysis
Human-machine collaboration
Semantic wiki
CEUR Workshop Proceedings English 2010 Semantic wikis are new generation of collaborative tools. They allow to embed semantic annotations in the wiki content. These annotations allow to better organize and structure the wiki contents. It is then possible for users to build knowledge understandable by humans and computers. By this way, machines are allowed to produce or update semantic wiki pages as humans can do. In this paper, we propose a new smart agent based on Formal Concept Analysis. This smart agent can compute automatically category trees based on defined semantic properties. In order to reduce human-machine collaboration problems, humans just validate changes proposed by the smart agent. A distributed version of wiki is used to ensure consistency of the content during the validation process. 0 0
Logoot-undo: Distributed collaborative editing system on P2P networks IEEE Transactions on Parallel and Distributed Systems 2010 Peer-to-peer systems provide scalable content distribution for cheap and resist to censorship attempts. However, {P2P} networks mainly distribute immutable content and provide poor support for highly dynamic content such as produced by collaborative systems. A new class of algorithms called {CRDT} {(Commutative} Replicated Data Type), which ensures consistency of highly dynamic content on {P2P} networks, is emerging. However, if existing {CRDT} algorithms support the edit anywhere anytime feature they do not support the "undo anywhere anytime feature. In this paper we present the {Logoot-Undo} {CRDT} algorithm which integrates the "undo anywhere anytime feature. We compare the performance of the proposed algorithm with related algorithms and measure the impact of the undo feature on the global performance of the algorithm. We prove that the cost of the undo feature remains low on a corpus of data extracted from Wikipedia. " 0 0
Using DSMW to build a network of semantic mediawiki servers CEUR Workshop Proceedings English 2010 DSMW is an extension to Semantic Mediawiki (SMW), it allows to create a network of SMW servers that share common semantic wiki pages. DSMW users can create communication channels between servers and use a publish-subscribe approach to manage the change propagation. DSMW synchronizes concurrent updates of shared semantic pages to ensure their consistency. It offers new collaboration modes to semantic wiki users and supports dataflow-oriented processes. 0 0
Logoot: A scalable optimistic replication algorithm for collaborative editing on P2P networks Proceedings - International Conference on Distributed Computing Systems English 2009 Massive collaborative editing becomes a reality through leading projects such as Wikipedia. This massive collaboration is currently supported with a costly central service. In order to avoid such costs, we aim to provide a peer-to-peer collaborative editing system. Existing approaches to build distributed collaborative editing systems either do not scale in terms of number of users or in terms of number of edits. We present the Logoot approach that scales in these both dimensions while ensuring causality, consistency and intention preservation criteria. We evaluate the Logoot approach and compare it to others using a corpus of all the edits applied on a set of the most edited and the biggest pages of Wikipedia. 0 0
Multi-synchronous collaborative semantic wikis Lecture Notes in Computer Science English 2009 Semantic wikis have opened an interesting way to mix Web 2.0 advantages with the Semantic Web approach. However, compared to other collaborative tools, wikis do not support all collaborative editing mode such as offline work or multi-synchronous editing. The lack of multi-synchronous supports in wikis is a problematic, especially, when working with semantic wikis. In these systems, it is often important to change multiple pages simultaneous in order to refactor the semantic wiki structure. In this paper, we present a new model of semantic wiki called Multi-Synchronous Semantic Wiki (MS2W). This model extends semantic wikis with multi-synchronous support that allows to create a P2P network of semantic wikis. Semantic wiki pages can be replicated on several semantic servers. The MS2W ensures CCI consistency on these pages relying on the Logoot algorithm. 0 0
Peer-to-Peer Semantic Wikis DEXA English 2009 0 0
Personal navigation in semantic wikis CEUR Workshop Proceedings English 2009 In this paper, we propose a personal navigation approach to Semantic Wikis. In semantic wikis, wikis pages are annotated with semantic data to facilitate research and navigation. The navigation is collaborative designed and shared by every user. However, individuals involved in a collaborative knowledge building activity need to customize the navigation according to her personal needs. In order to overcome this, we extend semantic wikis with personal annotations facilities to support personal navigation. This approach differs from other adaptive navigation approaches, because of the personalization is carried out by the user herself. We have implemented and validated these ideas on the top of a P2P semantic wiki. 0 0
Supporting personal semantic annotations in P2P semantic wikis Lecture Notes in Computer Science English 2009 In this paper, we propose to extend Peer-to-Peer Semantic Wikis with personal semantic annotations. Semantic Wikis are one of the most successful Semantic Web applications. In semantic wikis, wikis pages are annotated with semantic data to facilitate the navigation, information retrieving and ontology emerging. Semantic data represents the shared knowledge base which describes the common understanding of the community. However, in a collaborative knowledge building process the knowledge is basically created by individuals who are involved in a social process. Therefore, it is fundamental to support personal knowledge building in a differentiated way. Currently there are no available semantic wikis that support both personal and shared understandings. In order to overcome this problem, we propose a P2P collaborative knowledge building process and extend semantic wikis with personal annotations facilities to express personal understanding. In this paper, we detail the personal semantic annotation model and show its implementation in P2P semantic wikis. We also detail an evaluation study which shows that personal annotations demand less cognitive efforts than semantic data and are very useful to enrich the shared knowledge base. 0 0
Undo in peer-to-peer semantic wikis CEUR Workshop Proceedings English 2009 The undo mechanism is an essential feature in collaborative editing systems. Most popular semantic wikis support a revert feature, some provide an undo feature to remove any modification at any time. However this undo feature does not always succeed. Supporting the undo mechanism for P2P semantic wikis has never been tackled. In this paper, we present an undo approach for Swooki, the first P2P semantic wiki.We identify the problems to resolve in order to achieve such mechanism for P2P semantic wikis.We give the definition of the undo and the properties that must ensure. This approach allows both a revert and a permanent successful undo. 0 0
UniWiki: A Collaborative P2P System for Distributed Wiki Applications Collaborative editing
Optimistic replication
P2P
Distributed Interception
WETICE English 2009 0 0
WIKITAAABLE: A semantic wiki as a blackboard for a textual case-based reasoning system CEUR Workshop Proceedings English 2009 Semantic wikis enable a community of users to produce formalized knowledge readable and usable by machines. To take one step further, one can use a semantic wiki as a blackboard allowing humans and machines to interact in order to build knowledge that is useful for both humans and machines. In this paper, we present a case study of the use of a semantic wiki (Semantic Media Wiki) as a blackboard to manage culinary data and knowledge. This case study is performed within the context of the TAAABLE application, a case-based reasoning web system aiming at solving cooking problems on the basis of existing recipes. With WIKITAAABLE, an evolution of TAAABLE based on a semantic wiki, we show how a semantic wiki assists users in their knowledge management tasks by taking into account user feedback. The issues related to the integration of several knowledge management mechanisms in a single application are discussed at the end of the paper. 0 0
SWOOKI: A peer-to-peer semantic wiki CEUR Workshop Proceedings English 2008 In this paper, we propose to combine the advantages of semantic wikis and P2P wikis in order to design a peer-to-peer semantic wiki. The main challenge is how to merge wiki pages that embed semantic annotations. Merging algorithms used in P2P wiki systems have been designed for linear text and not for semantic data. In this paper, we evaluate two optimistic replication algorithms to build a P2P semantic wiki. 0 0
XWiki Concerto: A P2P Wiki System Supporting Disconnected Work Cooperative Design, Visualization, and Engineering English 2008 This paper presents the XWiki Concerto system, the P2P version of the XWiki server. This system is based on replicating wiki pages on a network of wiki servers. The approach, based on the Woot algorithm, has been designed to be scalable, to support the dynamic aspect of P2P networks and network partitions. These characteristics make our system capable of supporting disconnected edition and sub-groups, making it very flexible and usable. 0 0
XWiki concerto: A P2P wiki system supporting disconnected work Collaborative editing
Distributed system
Eventual data consistency
Web based cooperation tool
Wiki
Lecture Notes in Computer Science English 2008 This paper presents the XWiki Concerto system, the P2P version of the XWiki server. This system is based on replicating wiki pages on a network of wiki servers. The approach, based on the Woot algorithm, has been designed to be scalable, to support the dynamic aspect of P2P networks and network partitions. These characteristics make our system capable of supporting disconnected edition and sub-groups, making it very flexible and usable. 0 0
Wooki: A P2P Wiki-Based Collaborative Writing Tool Web Information Systems Engineering English 2007 Wiki systems are becoming an important part of the information system of many organisations and communities. This introduce the issue of the data availability in case of failure, heavy load or off-line access. We propose to replicate wiki pages across a P2P network of wiki engines. We address the problem of consistency of replicated wiki pages in the context of a P2P wiki system. In this paper, we present the architecture and the underlying algorithms of the wooki system. Compared to traditional wikis, Wooki is P2P wiki which scales, delivers better performances and allows off-line access. 0 0
Wooki: A P2P wiki-based collaborative writing tool Lecture Notes in Computer Science English 2007 Wiki systems are becoming an important part of the information system of many organisations and communities. This introduce the issue of the data availability in case of failure, heavy load or off-line access. We propose to replicate wiki pages across a P2P network of wiki engines. We address the problem of consistency of replicated wiki pages in the context of a P2P wiki system. In this paper, we present the architecture and the underlying algorithms of the wooki system. Compared to traditional wikis, Wooki is P2P wiki which scales, delivers better performances and allows off-line access. 0 0