Yves Hoppenot

Crossing textual and visual content in different application scenarios

This paper deals with multimedia information access. We propose two new approaches for hybrid text-image information processing that can be straightforwardly generalized to the more general multimodal scenario. Both approaches fall in the trans-media pseudo-relevance feedback category. Our first method proposes using a mixture model of the aggregate components, considering them as a single relevance concept. In our second approach, we define trans-media similarities as an aggregation of monomodal similarities between the elements of the aggregate and the new multimodal object. We also introduce the monomodal similarity measures for text and images that serve as basic components for both proposed trans-media similarities. We show how one can frame a large variety of problem in order to address them with the proposed techniques: image annotation or captioning, text illustration and multimedia retrieval and clustering. Finally, we present how these methods can be integrated in two applications: a travel blog assistant system and a tool for browsing the Wikipedia taking into account the multimedia nature of its content.

Promoting sustainable print behavior

We have designed the Personal Assessment Tool (PAT) to promote more sustainable print behaviour in a corporate work environment. Therefore, PAT provides its users with ambient awareness on their printing habits. We have experimented PAT in our research centre and describe this experiment along with our findings and observations. PAT definitely motivated the participating users to change their print behaviour. Nevertheless it also highlighted the constrained aspects of printing in a work environment calling for organizational changes of established work processes.

The Personal Assessment Tool: A System Providing Environmental Feedback to Users of Shared Printers for Providing Environmental Feedback

To face ongoing global warming issues and in general to promote sustainable development, a number of tools have been developed that help people to assess the impact of their behavior on the environment. In this paper we present the Personal Assessment Tool, a system that observes print behavior and aggregates information in ways meant to promote more conscious use of the shared printing resources.

From Eco-feedback to an Organizational Probe, Highlighting Paper Affordances in Administrative Work

In this paper we present a pilot study of the Print Awareness Tool (PAT). We initially designed PAT as an eco-feedback tool for paper waste reduction, but in our pilot study, it proved additionally even more valuable as an organizational probe providing the opportunity to question organizational paper-based workflows in general. Our findings illustrate that this is particularly true for administrative work where individuals have little agency, i.e. control over the printing tasks and processes they are involved in. We saw, however, that to capitalize on this effect, and to gather and benefit from the knowledge coming to the surface, the tool has to be enriched and managed accordingly. In addition, our study also showed evidence of paper affordances for administrative work that go beyond those discussed in the literature so far. From our findings we finally derive design requirements to digitally support such affordances and to extend PAT from a paper waste reduction tool into an infrastructure that would support organizations with a paper to digital transition.

Impact of Corporate Social Responsibility on Innovation Activities: The Case of Xerox

In this chapter we show how Corporate Social Responsibility (CSR) has influenced the research of a large manufacturing company, namely Xerox, during its transition to increase its services portfolio. We explain how a deep and long lasting CSR culture has influenced and effectively nurtured two (successful) research projects in the area of sustainability and the instruments that made this possible. We present each of these projects in detail and show how they facilitate more sustainable behaviour. The first case is to reduce paper waste in the workplace and the second to lower single car occupancy in commuting. Finally, we discuss how these projects enabled us to develop a more general approach to behaviour change in the workplace.