Gaëlle Calvary

QUIMERA: a quality metamodel to improve design rationale

With the increasing complexity of User Interfaces (UI) it is more and more necessary to make users understand the UI. We promote a Model-Driven approach to improve the perceived quality through an explicit and observable design rationale. The design rationale is the logical reasons given to justify a designed artifact. The design decisions are not taken arbitrarily, but following some criteria. We propose a Quality Metamodel to justify these decisions along a Model-Driven Engineering approach.

Formal verification of UI using the power of a recent tool suite

This paper presents an approach to verify the quality of user interfaces in the context of a critical system for nuclear power plants. The technique uses formal methods to perform verification. The user interfaces are described by means of a formal language called LNT and ergonomic properties are formally defined using temporal logics written in MCL language. Our approach moves towards the powerfulness of formal verification of user interfaces, thanks to recent tools to support the process.

Examples galleries generated by interactive genetic algorithms

Examples browsing is a common designer practice in user interface design. Several design galleries can be found on Internet. However, those galleries are hand crafted and thus limited and cumbersome to build. In this paper, we claim for tools for supporting both the production and exploration of examples. We describe a running prototype based on Interactive Genetic Algorithms (IGA), and relate an early evaluation.

Evanescent Adaptation on Small Screens

This paper addresses the problem of mastering the complexity of interacting with a large set of applications on smartphones. In one hand, number of applications increases. In the other hand, screen size reduces. To tackle this paradoxical evolution, we investigate adaptive user interfaces. We assume that it is possible to predict the applications of interest for a user in a given situation. Based on this hypothesis, our challenge is to accelerate user interaction when prediction is correct, without penalizing it when prediction is wrong. The paper proposes the concept of Evanescent Adaptation. The principle is a two-layer based representation: the predicted items (first layer) are displayed above the full list of items (second layer). The first layer is said to be evanescent in the sense that it automatically disappears progressively. The paper claims for putting this disappearing process under the control of the end-user. Thereby the user can close the first-layer as soon as s/he perceives prediction as irrelevant.

Worth-Centered Design in Practice: Lessons from Experience and Research Agenda

Worth-Centered Design (WCD) provides designers with six principles, five “D”s, a framework, and a set of tools, techniques, and methods for designing interactive systems that deliver worth. Despite its potential, WCD has not received much attention: the related literature is not intensive and the design methodology has not been investigated in many actual design settings. The community lacks of experience with WCD.

The PEW Framework for Worth Mapping

In Human Computer Interaction, it is more and more clear that usability is not enough. In order to take into account the other criteria that may be relevant for design, G. Cockton introduced the notion of “worth” and the Worth Centered Design (WCD) framework for its operationalization. The WCD framework structures the development process and provides designers with a set of tools, including Worth Maps (WMs).

UP!: Engineering Persuasive Interactive

Persuasive technology aims at supporting people to change their attitudes and/or behaviors sustainably. Application areas include energy saving, green mobility, medical observance, addiction, etc. Emergency to solve these societal challenges makes the field meet a great success. We propose UP!, a problem space to structure the exploration of the design space, an increment to the SEPIA framework. UP! combines two perspectives, the User and the Phenomenon under study, so that to create the right system that makes the user understand the problematic phenomenon and act appropriately to change sustainably.

Persuasive Events and User's Roles in Mobile-Based Interactive Solutions for Nature Discovery

The exploration and discovery of nature through walking, cycling, touring, trekking and hiking are targeted by this work, part of an on-going research on mobile-based persuasive user interaction. Considering HCI solutions dedicated to discover and explore nature, we uncover the concept of persuasive event and several classes of roles that users may endorse during a long-term usage of such interactive solutions. We claim the importance of these events and roles as, leveraging persuasion, they may contribute to improve nature discovery experience and to sustain motivation through user interaction. In this work we share these insights from our studies on the Mhikes platform, designed for such kind of nature-involved activities.

Bringing Worth Maps a Step Further: A Dedicated Online-Resource.

Worth Maps (WMs) are promising because they model interactive systems following different perspectives. Consequently, WMs support design in many ways. ARROW was introduced to provide designers with a systematic approach to worth mapping. However, the framework currently remains untested, which raises open questions about general applicability and relevance. In this work, we operationalize ARROW in additional design cases. With insights gained from the operational experience, we propose ARROWS (for ARROW-Support) as a refinement of the initial framework. ARROWS was assessed via a workshop with designers. Results highlight the need for appropriate resources supporting worth mapping. In order to fulfill this need, we have created and released a website providing designers with knowledge on ARROWS and WMs that follows a more practically oriented perspective.

IHM perlées pour le Cloud Computing: premiers retours d'expérience en informatique médicale

The emergence of utility computing such as Cloud Computing makes the current desktop metaphor outdated. There is a need to open the desktop so that to, in addition to classical data, also consider actors and tasks as well as their relationships. This paper proposes the concept of Pearl for both denoting and representing socially augmented data. It describes a health care prototype, and reports a qualitative evaluation that confirms the innovation and relevance of the concept.