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- item-2 hasContent chunyan-wang.
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- item-3 hasContent christina-aperjis.
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- item-5 hasContent thomas-sandholm.
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- 26 creator athena-vakali.
- 26 creator maria-giatsoglou.
- 26 creator stefanos-antaris.
- 26 type InProceedings.
- 26 label "Social Networking Trends and Dynamics Detection via a cloud-based framework design".
- 26 sameAs 26.
- 26 abstract "Social networking media generate huge content streams, which leverage, both academia and developers efforts in providing unbiased, powerful indications of users’ opinion and interests. Here, we present Cloud4Trends, a framework for collecting and analyzing user generated content through microblogging and blogging applications, both separately and jointly, focused on certain geographical areas, towards the identification of the most significant topics using trend analysis techniques. The cloud computing paradigm appears to offer a significant benefit in order to make such applications viable considering that the massive data sizes produced daily impose the need of a scalable and powerful infrastructure. Cloud4Trends constitutes an efficient Cloud-based approach in order to solve the online trend tracking problem based on Web 2.0 sources. A detailed system architecture model is also proposed, which is largely based on a set of service modules developed within the VENUS-C research project to facilitate the deployment of research applications on Cloud infrastructures.".
- 26 hasAuthorList authorList.
- 26 isPartOf proceedings.
- 26 keyword "Social networks".
- 26 keyword "cloud data deployment".
- 26 keyword "microblogs and blogosphere dynamics".
- 26 keyword "social Web clustering".
- 26 title "Social Networking Trends and Dynamics Detection via a cloud-based framework design".
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- item-1 hasContent athena-vakali.
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- item-2 hasContent maria-giatsoglou.
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- item-3 hasContent stefanos-antaris.
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- 7 creator hiroshi-motoda.
- 7 creator kazumi-saito.
- 7 creator kouzou-ohara.
- 7 creator masahiro-kimura.
- 7 type InProceedings.
- 7 label "Graph embedding on spheres and its application to visualization of information diffusion data".
- 7 sameAs 7.
- 7 abstract "We address the problem of visualizing structure of undirected graphs that have a value associated with each node into a K-dimensional Euclidean space in such a way that 1) the length of the point vector in this space is equal to the value assigned to the node and 2) nodes that are connected are placed as close as possible to each other in the space and nodes not connected are placed as far apart as possible from each other. The problem is reduced to K-dimensional spherical embedding with a proper objective function. The existing spherical embedding method can handle only a bipartite graph and cannot be used for this purpose. The other graph embedding methods, e.g., multi-dimensional scaling, spring force embedding methods, etc., cannot handle the value constraint and thus are not applicable, either. We propose a very efficient algorithm based on a power iteration that employs the double-centering operations. We apply the method to visualize the information diffusion process over a social network by assigning the node activation time to the node value, and compare the results with the other visualization methods. The results applied to four real world networks indicate that the proposed method can visualize the diffusion dynamics which the other methods cannot and the role of important nodes, e.g. mediator, more naturally than the other methods.".
- 7 hasAuthorList authorList.
- 7 isPartOf proceedings.
- 7 keyword "graph embedding".
- 7 keyword "information diffusion".
- 7 keyword "visualization".
- 7 title "Graph embedding on spheres and its application to visualization of information diffusion data".
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- item-1 hasContent kazumi-saito.
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- item-2 hasContent masahiro-kimura.
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- item-3 hasContent kouzou-ohara.
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- item-4 hasContent hiroshi-motoda.
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- 1 creator fabien-gandon.
- 1 creator maxime-lefrancois.
- 1 type InProceedings.
- 1 label "ULiS: An Expert System on Linguistics to Support Multilingual Management of Interlingual Semantic Web Knowledge bases".
- 1 sameAs 1.
- 1 abstract "We are interested in bridging the world of natural language and theworld of the semantic web in particular to support multilingual access to theweb of data. In this paper we introduce the ULiS project, that aims at designinga pivot-based NLP technique called Universal Linguistic System, 100% usingthe semantic web formalisms, and being compliant with the Meaning-Texttheory. Through the ULiS, a user could interact with an interlingual knowledgebase (IKB) in controlled natural language. Linguistic resources themselves arepart of a specific IKB: The Universal Lexical Knowledge base (ULK), so thatactors may enhance their controlled natural language, through requests in controllednatural language. We describe a basic interaction scenario at the systemlevel, and provide an overview of the architecture of ULiS. We then introducethe core of the ULiS: the interlingual lexical ontology (ILexicOn), in whicheach interlingual lexical unit class (ILUc) supports the projection of its semanticdecomposition on itself. We validate our model with a standalone ILexicOn,and introduce and explain a concise human-readable notation for it.".
- 1 hasAuthorList authorList.
- 1 isPartOf proceedings.
- 1 keyword "Explanatory Combinatorial Lexicology".
- 1 keyword "Interlingual Lexical Ontology".
- 1 keyword "Interlingual Lexical Primitives".
- 1 keyword "Meaning Text Theory".
- 1 keyword "Semantic Web".
- 1 keyword "Semantic decomposition".
- 1 title "ULiS: An Expert System on Linguistics to Support Multilingual Management of Interlingual Semantic Web Knowledge bases".
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