Hierarchical Topic Models for Language-based Video Hyperlinking

International audienceWe investigate video hyperlinking based on speech transcripts , leveraging a hierarchical topical structure to address two essential aspects of hyperlinking, namely, serendipity control and link justification. We propose and compare different approaches exploiting a hierarchy of topic models as an intermediate representation to compare the transcripts of video segments. These hierarchical representations offer a basis to characterize the hyperlinks, thanks to the knowledge of the topics who contributed to the creation of the links, and to control serendipity by choosing to give more weights to either general or specific topics. Experiments are performed on BBC videos from the Search and Hyperlinking task at MediaEval. Link precisions similar to those of direct text comparison are achieved however exhibiting different targets along with a potential control of serendipity

Vision of a Visipedia

The web is not perfect: while text is easily searched and organized, pictures (the vast majority of the bits that one can find online) are not. In order to see how one could improve the web and make pictures first-class citizens of the web, I explore the idea of Visipedia, a visual interface for Wikipedia that is able to answer visual queries and enables experts to contribute and organize visual knowledge. Five distinct groups of humans would interact through Visipedia: users, experts, editors, visual workers, and machine vision scientists. The latter would gradually build automata able to interpret images. I explore some of the technical challenges involved in making Visipedia happen. I argue that Visipedia will likely grow organically, combining state-of-the-art machine vision with human labor

On the Selection of Anchors and Targets for Video Hyperlinking

A problem not well understood in video hyperlinking is what qualifies a fragment as an anchor or target. Ideally, anchors provide good starting points for navigation, and targets supplement anchors with additional details while not distracting users with irrelevant, false and redundant information. The problem is not trivial for intertwining relationship between data characteristics and user expectation. Imagine that in a large dataset, there are clusters of fragments spreading over the feature space. The nature of each cluster can be described by its size (implying popularity) and structure (implying complexity). A principle way of hyperlinking can be carried out by picking centers of clusters as anchors and from there reach out to targets within or outside of clusters with consideration of neighborhood complexity. The question is which fragments should be selected either as anchors or targets, in one way to reflect the rich content of a dataset, and meanwhile to minimize the risk of frustrating user experience. This paper provides some insights to this question from the perspective of hubness and local intrinsic dimensionality, which are two statistical properties in assessing the popularity and complexity of data space. Based these properties, two novel algorithms are proposed for low-risk automatic selection of anchors and targets.Comment: ACM International Conference on Multimedia Retrieval (ICMR), 2017. (Oral

Wiki: A Technology for Conversational Knowledge Management and Group Collaboration

Wikis (from wikiwiki, meaning fast in Hawaiian) are a promising new technology that supports conversational knowledge creation and sharing. A Wiki is a collaboratively created and iteratively improved set of web pages, together with the software that manages the web pages. Because of their unique way of creating and managing knowledge, Wikis combine the best elements of earlier conversational knowledge management technologies, while avoiding many of their disadvantages. This article introduces Wiki technology, the behavioral and organizational implications of Wiki use, and Wiki applicability as groupware and help system software. The article concludes that organizations willing to embrace the Wiki way with collaborative, conversational knowledge management systems, may enjoy better than linear knowledge growth while being able to satisfy ad-hoc, distributed knowledge needs

WP2 Report from the ECHO IT Days

Abstract not availabl

Processing Structured Hypermedia : A Matter of Style

With the introduction of the World Wide Web in the early nineties, hypermedia has become the uniform interface to the wide variety of information sources available over the Internet. The full potential of the Web, however, can only be realized by building on the strengths of its underlying research fields. This book describes the areas of hypertext, multimedia, electronic publishing and the World Wide Web and points out fundamental similarities and differences in approaches towards the processing of information. It gives an overview of the dominant models and tools developed in these fields and describes the key interrelationships and mutual incompatibilities. In addition to a formal specification of a selection of these models, the book discusses the impact of the models described on the software architectures that have been developed for processing hypermedia documents. Two example hypermedia architectures are described in more detail: the DejaVu object-oriented hypermedia framework, developed at the VU, and CWI's Berlage environment for time-based hypermedia document transformations

The Feminine Margin: The Re-Imagining of One Professor\u27s Rhetorical Pedagogy--A Curriculum Project

Writing pedagogy uses techniques that institutionalize dichotomous thinking rather than work against it. Cartesian duality has helped to create the marginalization of people, environments, and animals inherent in Western thought. Writing pedagogy based in current-traditional rhetoric uses a writing process that reinforces the hierarchical structure of Self/Other, Author/Reader, and Teacher/Student. This structure, in conjunction with capitalism, prioritizes the self and financial gain while diminishing and objectifying the other. The thought process behind the objectification and monetization of the other created the unsustainable business and life practices behind global warming, racism, sexism, and environmental destruction. A reframing of pedagogical writing practices can fight dichotomous thinking by re-imagining student writers as counter-capitalism content creators. Changing student perceptions from isolation to a transmodern, humanitarian, and feminist ethics of care model uses a self-reflexive ethnography to form a pedagogy of writing that challenges dichotomous thought—by focusing on transparency in my teaching practice, the utilization of liminality through images, the use of technology to publish student work, and both instructor and student self-reflection as a part of the writing and communication process. This practice has led me to a theory of resistance and influence that I have titled The Resistance Hurricane, a definition of digital rhetoric that includes humanitarian and feminist objectives that I have titled Electric Rhetoric, and a definition for the digitally mediated product of that rhetoric that I call Electric Blooms or electracy after Gregory Ulmer\u27s term for digital media

Using ATLAS.ti to facilitate data analysis for a systematic review of leadership competencies in the completion of a doctoral dissertation

The author used ATLAS.ti to conduct a systematic review of the literature on leadership competencies in fields undergoing rapid change to complete his dissertation. Studies were imported to ATLAS.ti for first, second and third stage analysis which led to the creation of final themes and concepts. The use of ATLAS.ti for coding encouraged a cyclical and iterative approach to data analysis that would have been difficult to accomplish through note cards, word processing, or spreadsheet applications. ATLAS.ti assisted with using meta-ethnography as the means of synthesizing both qualitative and quantitative research. ATLAS.ti provided the ability to make chains of multiple codes and linking of quotations to create networks, which was vital to third stage coding. These network diagrams were qualitative visual representations of the data and greatly assisted with third stage coding. Concepts, themes, and patterns emerged from the network diagrams. Also useful at this stage for identifying patterns in the data was mapping of co-occurring codes. ATLAS.ti allows co-occurring codes to be retrieved and visualized through network and mapping tools. Finally, ATLAS.ti was used to create hyperlinked maps of quotations which assisted with the analysis of proposition three of this dissertation

Deliverable D2.7 Final Linked Media Layer and Evaluation

This deliverable presents the evaluation of content annotation and content enrichment systems that are part of the final tool set developed within the LinkedTV consortium. The evaluations were performed on both the Linked News and Linked Culture trial content, as well as on other content annotated for this purpose. The evaluation spans three languages: German (Linked News), Dutch (Linked Culture) and English. Selected algorithms and tools were also subject to benchmarking in two international contests: MediaEval 2014 and TAC’14. Additionally, the Microposts 2015 NEEL Challenge is being organized with the support of LinkedTV