Search results for: Pascale Kuntz

Items from 1 to 20 out of 31 results

article

Visual analytics for exploring topic long-term evolution and detecting weak signals in company targeted tweets

Lambert Pépin, Pascale Kuntz, Julien Blanchard, Fabrice Guillet, more

Computers & Industrial Engineering > 2017 > 112 > C > 450-458

Business decision support tools, including social media data analysis, are required to help managers better understand trends and customer opinions. This paper presents a visual analytics-based approach to assist an expert user in tracking topics relative to his/her company from Twitter. Developed for visualizing topic long-term evolution and detecting weak signals, our process is composed of three...

chapter

A Graph-based Clustering Approach to Evaluate Interestingness Measures: A Tool and a Comparative Study

Xuan-Hiep Huynh, Fabrice Guillet, Julien Blanchard, Pascale Kuntz, more

Studies in Computational Intelligence > Quality Measures in Data Mining > Overviews on rule quality > 25-50

chapter

Routing in telecommunications networks with ant-like agents

Eric Bonabeau, Florian Henaux, Sylvain Guérin, Dominique Snyers, more

Lecture Notes in Computer Science > Intelligent Agents for Telecommunication Applications > 60-71

A simple mechanism is presented, based on ant-like agents, for routing and load balancing in telecommunications networks, following the initial works of Appleby and Stewart [1] and Schoonderwoerd et al. [32,33]. In the present work, agents are very similar to those proposed by Schoonderwoerd et al. [32,33], but are supplemented with the ability to perform more computations at switching nodes, which...

chapter

The Topological Fortress of Termites

Andrea Perna, Christian Jost, Sergi Valverde, Jacques Gautrais, more

Lecture Notes in Computer Science > Bio-Inspired Computing and Communication > Complex Networks > 165-173

Termites are known for building some of the most elaborate architectures observed in the animal world. We here analyse some topological properties of three dimensional networks of galleries built by termites of the genus Cubitermes. These networks are extremely sparse, in spite of the fact that there is no building cost associated with higher connectivity. In addition, more “central” vertices (in...

chapter

A Study of Evaluation Functions for the Graph K-Coloring Problem

Daniel Cosmin Porumbel, Jin-Kao Hao, Pascale Kuntz

Lecture Notes in Computer Science > Artificial Evolution > Combinational and Multi-objective Optimization > 124-135

The evaluation or fitness function is a key component of any heuristic search algorithm. This paper introduces a new evaluation function for the well-known graph K-coloring problem. This function takes into account not only the number of conflicting vertices, but also inherent information related to the structure of the graph. To assess the effectiveness of this new evaluation function, we carry out...

chapter

Diversity Control and Multi-Parent Recombination for Evolutionary Graph Coloring Algorithms

Daniel Cosmin Porumbel, Jin-Kao Hao, Pascale Kuntz

Lecture Notes in Computer Science > Evolutionary Computation in Combinatorial Optimization > 121-132

We present a hybrid evolutionary algorithm for the graph coloring problem (Evocol). Evocol is based on two simple-but-effective ideas. First, we use an enhanced crossover that collects the best color classes out of more than two parents; the best color classes are selected using a ranking based on both class fitness and class size. We also introduce a simple method of using distances to assure the...

chapter

Conceptual and Lexical Prototypicality Gradients Dedicated to Ontology Personalisation

Xavier Aimé, Frédéric Furst, Pascale Kuntz, Francky Trichet

Lecture Notes in Computer Science > On the Move to Meaningful Internet Systems: OTM 2008 > Ontology Maintanence and Evaluation > 1423-1439

Since a long time, Domain Ontologies have been limited to scientific and technical domains. This situation has advantaged the sustainable development of “unbiased and universal knowledge”. With the current emergence of Cognitive Sciences and the application of Ontology Engineering to Social and Human Sciences, the need to deal with subjective knowledge becomes more and more crucial. The aim of our...

chapter

Elements for the Description of Fitness Landscapes Associated with Local Operators for Layered Drawings of Directed Graphs

Pascale Kuntz, Bruno Pinaud, Rémi Lehn

Applied Optimization > Metaheuristics: Computer Decision-Making > 405-420

Minimizing arc crossings for drawing acyclic digraphs is a well-known NP-complete problem for which several local-search approaches based on local transformations (switching, median, ...) have been proposed. Their adaptations have been recently included in different metaheuristics. As an attempt to better understand the dynamics of the search processes, we study the fitness landscapes associated with...

chapter

SemioSem: A Semiotic-Based Similarity Measure

Xavier Aimé, Frédéric Furst, Pascale Kuntz, Francky Trichet

Lecture Notes in Computer Science > On the Move to Meaningful Internet Systems: OTM 2009 Workshops > Ontology Evaluation and Management > 584-593

This paper introduces a new similarity measure called SemioSem. The first originality of this measure, which is defined in the context of a semiotic-based approach, is to consider the three dimensions of the conceptualization underlying a domain ontology: the intension (i.e. the properties used to define the concepts), the extension (i.e. the instances of the concepts) and the expression (i.e. the...

chapter

GVSR: An On-Line Guide for Choosing a Graph Visualization Software

Bruno Pinaud, Pascale Kuntz

Lecture Notes in Computer Science > Graph Drawing > Posters > 400-401

It is easy to find graph visualization applications for all sorts of uses. However, choosing an appropriate application may be difficult. This poster presents a website ( http://gvsr.polytech.univ-nantes.fr/ ) built to help users to choose a program adapted to their problems. So far, this site references eighty programs and aims at helping users both in their choices and in comparing the programs...

chapter

The Website for Graph Visualization Software References (GVSR)

Bruno Pinaud, Pascale Kuntz, Fabien Picarougne

Lecture Notes in Computer Science > Graph Drawing > Posters > 440-441

Graph drawing software are now commonly used. However, the choice of a well-adapted program may be hard for an inexperienced user. This poster presents a website (http://www.polytech.univ-nantes.fr/GVSR/) built to help users choose a program adapted to their problems. So far, this site uniformely presents fifty programs and aims at helping users both in their choices and in comparing the programs.

chapter

A User-Driven Process for Mining Association Rules

Pascale Kuntz, Fabrice Guillet, Rémi Lehn, Henri Briand

Lecture Notes in Computer Science > Principles of Data Mining and Knowledge Discovery > Posters > 483-489

This paper describes the components of a human-centered process for discovering association rules where the user is considered as a heuristic which drives the mining algorithms via a well-adapted interface. In this approach, inspired by experimental works on behaviors during a discovery stage, the rule extraction is dynamic : at each step, the user can focus on a subset of potentially interesting...

chapter

A Contribution to the Study of the Fitness Landscape for a Graph Drawing Problem

Rémi Lehn, Pascale Kuntz

Lecture Notes in Computer Science > Applications of Evolutionary Computing > Analysis of Evolutionary Algorithms > 172-181

These past few years genetic algorithms and stochastic hill-climbing have received a growing interest for different graph drawing problems. This paper deals with the layered drawing of directed graphs which is known to be an NP-complete problem for the arc-crossing minimization criterium. Before setting out a (n+1)th comparison between meta-heuristics, we here prefer to study the characteristics of...

chapter

Position-Guided Tabu Search Algorithm for the Graph Coloring Problem

Daniel Cosmin Porumbel, Jin-Kao Hao, Pascale Kuntz

Lecture Notes in Computer Science > Learning and Intelligent Optimization > Evolutionary Dynamics of Extremal Optimization > 148-162

A very undesirable behavior of any heuristic algorithm is to be stuck in some specific parts of the search space, in particular in the basins of attraction of the local optima. While there are many well-studied methods to help the search process escape a basin of attraction, it seems more difficult to prevent it from looping between a limited number of basins of attraction. We introduce a Position...

chapter

An overview of the Statistical Implicative Analysis (SIA) development

Régis Gras, Pascale Kuntz

Studies in Computational Intelligence > Statistical Implicative Analysis > Methodology and concepts for SIA > 11-40

This paper presents an overview of the Statistical Implicative Analysis which is a data analysis method devoted to the extraction and the structuration of quasi-implications. Originally developed by Gras [11] for applications in the didactics of mathematics, it has considerably evolved and has been applied to a wide range of data, in particular in data mining. This paper is a synthesis which both...

chapter

A Genetic Algorithm for Visualizing Networks of Association Rules

Fabrice Guillet, Pascale Kuntz, Rémi Lehn

Lecture Notes in Computer Science > Multiple Approaches to Intelligent Systems > Genetic Algorithms > 145-154

In order to discover relevant information in a huge amount of data, a process commonly used in data mining consists in extracting logical association rules. As algorithms generally produce a large quantity of rules which hides the most interesting, it is essential to develop well-adapted rule mining tools which organize the rules and offer an intelligible representation of them. In this paper,...

chapter

Dynamic Graph Drawing with a Hybridized Genetic Algorithm

Bruno Pinaud, Pascale Kuntz, RØmi Lehn

Adaptive Computing in Design and Manufacture VI > Algorithm Development > 365-375

Automatic graph drawing algorithms, especially those for hierarchical digraphs, have an important place in computer‐aided design software or more generally in software programs where an ef cient visualization tool for complex structure is required. In these cases, aesthetics plays a major role for generating readable and understandable layouts. Besides, in an interactive approach, the program must...

article

Learning from multi-label data with interactivity constraints: An extensive experimental study

Noureddine-Yassine Nair-Benrekia, Pascale Kuntz, Frank Meyer

Expert Systems With Applications > 2015 > 42 > 13 > 5723-5736

Interactive classification aims at introducing user preferences in the learning process to produce individualized outcomes more adapted to each user’s behavior than the fully automatic approaches. The current interactive classification systems generally adopt a single-label classification paradigm that constrains items to span one label at a time and consequently limit the user’s expressiveness while...

chapter

Visualizing a Set of Multiple Time Series with an Aggregate Stacked Graph

Nicolas Greffard, Pascale Kuntz

2015 19th International Conference on Information Visualisation > 68 - 74

2015 19th International Conference on Information Visualisation (iV)

Time series analysis is the centerpiece of numerous research fields from stock analysis to topic mining. While the univariate case is still commonplace, there is an increasing need for tools providing features to study the relationships between multiple time series. Initially motivated by a interdisciplinary research agenda with sociologists and musicologists, we propose an extension of the famous...

chapter

Music archipelago, a facet-like music library comparison tool

Eric Languenou, Pascale Kuntz, Nicolas Greffard

2015 IEEE 9th International Conference on Research Challenges in Information Science (RCIS) > 534 - 535

2015 IEEE 9th International Conference on Research Challenges in Information Science (RCIS)

Stimulated by the rise of music recommendation services, the visualization of music collections has undergone a remarkable transformation over the last decade. In this communication, we focus on the visual comparison of personal music collections. We introduce an interactive and tridimensional system which allows their visualization using a music archipelago metaphor and relying on a facet-based engine...

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INFONA - science communication portal

Search results for: Pascale Kuntz

Visual analytics for exploring topic long-term evolution and detecting weak signals in company targeted tweets

A Graph-based Clustering Approach to Evaluate Interestingness Measures: A Tool and a Comparative Study

Routing in telecommunications networks with ant-like agents

The Topological Fortress of Termites

A Study of Evaluation Functions for the Graph K-Coloring Problem

Diversity Control and Multi-Parent Recombination for Evolutionary Graph Coloring Algorithms

Conceptual and Lexical Prototypicality Gradients Dedicated to Ontology Personalisation

Elements for the Description of Fitness Landscapes Associated with Local Operators for Layered Drawings of Directed Graphs

SemioSem: A Semiotic-Based Similarity Measure

GVSR: An On-Line Guide for Choosing a Graph Visualization Software

The Website for Graph Visualization Software References (GVSR)

A User-Driven Process for Mining Association Rules

A Contribution to the Study of the Fitness Landscape for a Graph Drawing Problem

Position-Guided Tabu Search Algorithm for the Graph Coloring Problem

An overview of the Statistical Implicative Analysis (SIA) development

A Genetic Algorithm for Visualizing Networks of Association Rules

Dynamic Graph Drawing with a Hybridized Genetic Algorithm

Learning from multi-label data with interactivity constraints: An extensive experimental study

Visualizing a Set of Multiple Time Series with an Aggregate Stacked Graph

Music archipelago, a facet-like music library comparison tool

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