Papers by Fanny Chevalier
Tweetris: A Study of Whole Body Interaction During a Public Art Event
ABSTRACT We present an analysis of how players interacted with a whole body interactive game duri... more ABSTRACT We present an analysis of how players interacted with a whole body interactive game during an art festival. Described as a combination of Tetris, yoga and Twitter, Tweetris is a Kinect-based two player game. Both players are presented with a random tetromino from the game Tetris, and must race to match the shape of their body to the given tetromino. During an all-night session, we collected over 6000 winning body shapes from more than 270 players in two locations.
Abstract We present a method to detect and visualize evolution patterns in C++ source code. Our m... more Abstract We present a method to detect and visualize evolution patterns in C++ source code. Our method consists of three steps. First, we extract an annotated syntax tree (AST) from each version of a given C++ source code. Next, we hash the extracted syntax nodes based on a metric combining structure and type information, and construct matches (correspondences) between similar-hash subtrees. Our technique detects code fragments which have not changed, or changed little, during the software evolution.
Abstract General-purpose software applications are usually not tailored for a specific user with ... more Abstract General-purpose software applications are usually not tailored for a specific user with specific tasks, strategies or preferences. In order to achieve optimal performance with such applications, users typically need to transition to an alternative efficient behavior. Often, features of such alternative behaviors are not initially accessible and first need to be customized. However, few research works formally study and empirically measure what drives a user to customize.
Abstract In this paper, we tackle the problem of matching of objects in video in the context of t... more Abstract In this paper, we tackle the problem of matching of objects in video in the context of the rough indexing paradigm. In this context, the video data are of very low resolution and segmentation is consequently inaccurate. The region features (texture, color, shape) are not strongly relevant due to the resolution. The structure of the objects must be considered in order to improve the robustness of the matching of regions. Indeed, the problem of object matching can be expressed in terms of directed acyclic graph (DAG) matching.
Abstract As a response to the current navigational format of online news, which is linear, chrono... more Abstract As a response to the current navigational format of online news, which is linear, chronological, and heavily delineated by topics, we propose a more discursive and heuristic model of navigation that will offer readers a variety of lenses, interpretations, and pathways to read through a news site.
Abstract We present Histomages, a new interaction model for image editing that considers color hi... more Abstract We present Histomages, a new interaction model for image editing that considers color histograms as spatial rearrangements of image pixels. Users can select pixels on image histograms as they would select image regions and directly manipulate them to adjust their colors. Histomages are also affected by other image tools such as paintbrushes.
Résumé. Wikipedia, devenue l'une des bases de connaissances les plus populaires, pose le problème... more Résumé. Wikipedia, devenue l'une des bases de connaissances les plus populaires, pose le problème de la fiabilité de l'information qu'elle dissémine. Nous proposons WikipediaViz, un ensemble de visualisations basé sur un mecanisme de collecte et d'agrégation de données d'édition Wikipedia pour aider le lecteur à appréhender la maturité d'un article.
Abstract A discourse parser is a natural language processing system which can represent the organ... more Abstract A discourse parser is a natural language processing system which can represent the organization of a document based on a rhetorical structure tree&# 8212; one of the key data structures enabling applications such as text summarization, question answering and dialogue generation. Computational linguistics researchers currently rely on manually exploring and comparing the discourse structures to get intuitions for improving parsing algorithms.
Abstract To increase its credibility and preserve the trust of its readers. Wikipedia needs to en... more Abstract To increase its credibility and preserve the trust of its readers. Wikipedia needs to ensure a good quality of its articles. To that end, it is critical for Wikipedia administrators to be aware of contributors' editing activity to monitor vandalism, encourage reliable contributors to work on specific articles, or find mentors for new contributors. In this paper, we present iChase, a novel interactive visualization tool to provide administrators with better awareness of editing activities on Wikipedia.
ABSTRACT Fine art is commonly defined as an art form developed primarily for aesthetics and conce... more ABSTRACT Fine art is commonly defined as an art form developed primarily for aesthetics and conceptual practices. Thereby, it differs from Data Visualization in the sense that its focus is not the design of practical applications to address a specific problem. However, increasingly visual artists and designers have been interested in using real data in their artwork. Not only do they use the data as a primary material to create aesthetic pieces, but they also present the data to facilitate discovery.
Abstract Visual representations of time-series are useful for tasks such as identifying trends, p... more Abstract Visual representations of time-series are useful for tasks such as identifying trends, patterns and anomalies in the data. Many techniques have been devised to make these visual representations more scalable, enabling the simultaneous display of multiple variables, as well as the multi-scale display of time-series of very high resolution or that span long time periods.
In this paper, we tackle the problem of matching of objects in video in the framework of the roug... more In this paper, we tackle the problem of matching of objects in video in the framework of the rough indexing paradigm. In this context, the video data are of very low spatial and temporal resolution because they come from partially decoded MPEG compressed streams. This paradigm enables us to achieve our purpose in near real time due to the faster computation on rough data than on original full spatial and temporal resolution video frames.
Abstract Social networks collected by historians or sociologists typically have a large number of... more Abstract Social networks collected by historians or sociologists typically have a large number of actors and edge attributes. Applying social network analysis (SNA) algorithms to these networks produces additional attributes such as degree, centrality, and clustering coefficients. Understanding the effects of this plethora of attributes is one of the main challenges of multivariate SNA. We present the design of GraphDice, a multivariate network visualization system for exploring the attribute space of edges and actors.
Abstract We present a quick preview technique that smoothly transitions between document markup c... more Abstract We present a quick preview technique that smoothly transitions between document markup code and its visual rendering. This technique allows users to regularly check the code they are editing in-place, without leaving the text editor. This method can complement classical preview windows by offering rapid overviews of code-to-document mappings and leaving more screen real-estate. We discuss the design and implementation of our technique.
Abstract The copy-paste command is a fundamental and widely used operation in daily computing. It... more Abstract The copy-paste command is a fundamental and widely used operation in daily computing. It is generally regarded as a simple task but the process can become tedious when frequent window switching is required to copy-paste across different documents. Auto-completion is another popular operation aimed at reducing users' typing effort. It contrasts to copy-paste by allowing for text completion without switching windows. However, the available content for completion is predefined.
Abstract The need for pattern discovery in long time-series data led researchers to develop inter... more Abstract The need for pattern discovery in long time-series data led researchers to develop interactive visualization tools and analytical algorithms for gaining insight into the data. Most of the literature on time-series data visualization either focus on a small number of tasks or a specific domain. We propose KronoMiner, a tool that embeds new interaction and visualization techniques as well as analytical capabilities for the visual exploration of time-series data.
Abstract As Wikipedia has become one of the most used knowledge bases worldwide, the problem of t... more Abstract As Wikipedia has become one of the most used knowledge bases worldwide, the problem of the trustworthiness of the information it disseminates becomes central. With WikipediaViz, we introduce five visual indicators integrated to the Wikipedia layout that can keep casual Wikipedia readers aware of important metainformation about the articles they read.
Abstract This article examines the benefits of using text animated transitions for navigating in ... more Abstract This article examines the benefits of using text animated transitions for navigating in the revision history of textual documents. We propose an animation technique for smoothly transitioning between different text revisions, then present the Diffamation system. Diffamation supports rapid exploration of revision histories by combining text animated transitions with simple navigation and visualization tools.
ABSTRACT Wikipedia has been built to gather encyclopedic knowledge using a collaborative social p... more ABSTRACT Wikipedia has been built to gather encyclopedic knowledge using a collaborative social process that has proved its effectiveness. However, the workload required for raising the quality and increasing the coverage of Wikipedia is exhausting the community.
In this paper, we tackle the problem of matching of objects in video in the context of the rough ... more In this paper, we tackle the problem of matching of objects in video in the context of the rough indexing paradigm. The approach developed is based on matching of region adjacency graphs (RAG) of pre-segmented objects. In the context of the rough indexing paradigm, the video data are of very low resolution and segmentation is consequently inaccurate. Hence the RAGs vary with the time.
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Papers by Fanny Chevalier