Papers by Liliana Ardissono
IGI Global eBooks, 2009
This chapter describes the user-centered design approach we adopted in the development and evalua... more This chapter describes the user-centered design approach we adopted in the development and evaluation of an adaptive Web site. The development of usable Web sites, offering easy and efficient services to heterogeneous users, is a hot topic and a challenging issue for adaptive hypermedia and human-computer interaction. User-centered design promises to facilitate this task by guiding system designers in making decisions, which take the user's needs in serious account. Within a recent project funded by the Italian Public Administration, we developed a prototype information system supporting the online search of data about water resources. As the system was targeted to different types of users, including generic citizens and specialized technicians, we adopted a user-centered approach to identify their information needs and interaction requirements. Moreover, we applied query analysis techniques to identify further information needs and speed up the data retrieval activity. In this chapter, we describe the requirements analysis, the system design, and its evaluation.
This paper reports on the goals and first results of the CAWICOMS 1 project. This EUfunded projec... more This paper reports on the goals and first results of the CAWICOMS 1 project. This EUfunded project has two main goals: The first one is providing technologies for the development of customer-adaptive Web-interfaces for the configuration of mass-customised products. The second one is the integration of configuration systems along the supplychain. Within this paper we first motivate the demand for personalised and adaptive Webinterfaces for the domain of product configuration. In addition, we sketch scenarios where product configuration takes place at several stages in the supply chain and the involved configuration systems have to cooperatively solve a distributed configuration task. An overview of the CAWICOMS architecture is given as well as first results on distributed problem solving and the integration into the surrounding enterprise's software infrastructure.
IEEE Access, Dec 31, 2023
The fashion industry accounts for a relevant portion of the environmental impact of EU consumptio... more The fashion industry accounts for a relevant portion of the environmental impact of EU consumption. Moreover, the expansion of fast fashion raises further concerns about the well-being of the people and animals involved in its production. Increasing the purchase of green clothes (i.e., sustainable garments that have been produced by brands conforming to good ethical standards) is thus key to the reduction of fashion's environmental and social footprint. In this paper, we investigate digital nudges to promote the selection of green clothes in online catalogs. For this purpose, we propose a recommender system that combines the personalized suggestion of new and secondhand garments with the presentation of sustainability and ethical standards data to favor item comparison and support responsible selection decisions. This is different from standard recommender systems, which suggest homogeneous products, either new or secondhand. Moreover, it is challenged by the bias toward buying new products that is observed in the literature about clothing consumption. In a user study involving 251 participants, we found that enhancing clothes recommendations with (i) sentences that promote secondhand garments and (ii) visual labels that summarize items' sustainability and brands' ethical standards, sensibly reduced this bias. Moreover, it induced some people to take the sustainability of products into account in their selection decisions. However, participants' interest in brands' ethical standards seemed to be secondary, especially regarding respect for animals. This finding reveals a need to enhance people's awareness and sensitivity on this topic. Even though more work is needed to increase green, and especially ethical fashion consumption, our findings suggest the adoption of nudges in clothes recommender systems to enhance user awareness about items, their sustainability, and their social impact. INDEX TERMS Digital nudging, recommender systems, sustainable fashion consumption.
International Conference on User Modeling, Adaptation, and Personalization, 2005
IGI Global eBooks, Jan 18, 2011
This chapter describes the user-centered design approach we adopted in the development and evalua... more This chapter describes the user-centered design approach we adopted in the development and evaluation of an adaptive Web site. The development of usable Web sites, offering easy and efficient services to heterogeneous users, is a hot topic and a challenging issue for adaptive hypermedia and human-computer interaction. User-centered design promises to facilitate this task by guiding system designers in making decisions, which take the user’s needs in serious account. Within a recent project funded by the Italian Public Administration, we developed a prototype information system supporting the online search of data about water resources. As the system was targeted to different types of users, including generic citizens and specialized technicians, we adopted a user-centered approach to identify their information needs and interaction requirements. Moreover, we applied query analysis techniques to identify further information needs and speed up the data retrieval activity. In this chapter, we describe the requirements analysis, the system design, and its evaluation.
ACM PATCH 2020, organized in conjunction with the 28th International Conference on User Modeling,... more ACM PATCH 2020, organized in conjunction with the 28th International Conference on User Modeling, Adaptation and Personalization, is the latest event of the PATCH series, started in 2007 and held within the UMAP and IUI Conference series. We summarize the main ideas addressed in the papers accepted for publication in the workshop proceedings and for presentation at the event.
IEEE Access, 2022
Current recommender systems employ item-centric properties to estimate ratings and present the re... more Current recommender systems employ item-centric properties to estimate ratings and present the results to the user. However, recent studies highlight the fact that the stages of item fruition also involve extrinsic factors, such as the interaction with the service provider before, during and after item selection. In other words, a holistic view of consumer experience, including local properties of items, as well as consumers' perceptions of item fruition, should be adopted to enhance user awareness and decision-making. In this work, we integrate recommender systems with service models to reason about the different stages of item fruition. By exploiting the Service Journey Maps to define service-based item and user profiles, we develop a novel family of recommender systems that evaluate items by taking preference management and overall consumer experience into account. Moreover, we introduce a two-level visual model to provide users with different information about recommendation results: (i) the higher level summarizes consumer experience about items and supports the identification of promising suggestions within a possibly long list of results; (ii) the lower level enables the exploration of detailed data about the local properties of items. In a user test instantiated in the home-booking domain, we compared our models to standard recommender systems. We found that the service-based algorithms that only use item fruition experience excel in ranking and minimize the error in rating estimation. Moreover, the combination of data about item fruition experience and item properties achieves slightly lower recommendation performance; however, it enhances users' perceptions of the awareness and the decision-making support provided by the system. These results encourage the adoption of service-based models to summarize user preferences and experience in recommender systems.
Lecture Notes in Computer Science, 2021
The use of general descriptive names, registered names, trademarks, service marks, etc. in this p... more The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.
IGI Global eBooks, Oct 22, 2012
This paper describes a framework supporting the development of open collaboration environments wh... more This paper describes a framework supporting the development of open collaboration environments which integrate heterogeneous business services. The framework facilitates the user cooperation in the execution of shared activities by offering a workspace awareness support which abstracts from the business services employed to operate. The management of the workspaces of the user's collaborations is based on the functions offered by the Collaborative Task Manager (CTM), which offers a lightweight and flexible model for handling more or less complex collaborations. The CTM is integrated with business services in a loosely coupled way which supports the management of parallel workspaces for accessing the user's collaboration contexts, their objects and the related awareness information.
Intelligenza Artificiale, Jul 22, 2018
This paper provides an overview of our research with Pietro Torasso, outlining the main topics we... more This paper provides an overview of our research with Pietro Torasso, outlining the main topics we worked at collaborating with him. Piero, as we are used to call him, had an extremely important role as an advisor, helping us to work in a methodologically sound way, with his constant and helpful feedback, suggestions, and forward-looking ideas. Describing our collaboration with Piero in a few pages is a difficult task, but we hope that this paper conveys at least a partial view of it.
Lecture Notes in Computer Science, 2012
This book constitutes selected papers from the lectures given at the workshops held in conjunctio... more This book constitutes selected papers from the lectures given at the workshops held in conjunction with the User Modeling, Adaptation and Personalization Conference, UMAP 2011, Girona, Spain, in July 2011. The 40 papers presented were carefully reviewed and selected for inclusion in this book. For each workshop there is an overview paper summarizing the workshop themes, the accepted contributions and the future research trends. In addition the volume presents a selection of the best poster papers of UMAP ...
The ubiquitous and pervasive availability of the Internet, and of Web-based services, is dramatic... more The ubiquitous and pervasive availability of the Internet, and of Web-based services, is dramatically changing people's lives. Meanwhile, man's presence on the Web is growing fast, enabled by the offerings of low-cost devices and wireless broad-band Internet connections. On the other hand, users are adopting on-line applications and services more and more, both for personal and business purposes, in order to get in touch with other people and to manage documents, pictures, and many other types of artifacts in a ubiquitous environment that does not impose the usage of a specific end-user device. The naturally arising question is thus the following: if these projects, activities, and collaboration teams are developed all around, why do we need to deal with large numbers of separate services, each one operating in a separate representation of reality, instead of performing tasks in a unified environment integrating such different services automatically? This chapter discusses this aspect of current user collaboration and presents an infrastructure for the development of user-centered clouds of services that enable the user to interact with her favorite applications from a unified environment managing her workspaces and collaborations. The management of such collaborative service clouds is enabled
Springer eBooks, 2012
This book constitutes selected papers from the lectures given at the workshops held in conjunctio... more This book constitutes selected papers from the lectures given at the workshops held in conjunction with the User Modeling, Adaptation and Personalization Conference, UMAP 2011, Girona, Spain, in July 2011. The 40 papers presented were carefully reviewed and selected for inclusion in this book. For each workshop there is an overview paper summarizing the workshop themes, the accepted contributions and the future research trends. In addition the volume presents a selection of the best poster papers of UMAP ...
Google, Inc. (search). ...
International Conference on User Modeling, Adaptation, and Personalization, 2017
This paper presents the Collaborative Task Manager (CTM), which offers a unified management of sh... more This paper presents the Collaborative Task Manager (CTM), which offers a unified management of shared tasks and commitments involving the usage of heterogeneous applications. The CTM supports the synchronization of user activities, and the management of workspace awareness, in customized collaboration environments. In particular, the CTM enables the user to resume the activity context of a task, by providing direct links to artifacts developed by using multiple applications. Moreover, the CTM supports a task aware workspace awareness management, enabling the user to receive the notifications concerning each specific task in an organized way, and to access a workspace awareness space structured on the basis of her/his tasks.
IGI Global eBooks, May 24, 2011
This chapter describes the user-centered design approach we adopted in the development and evalua... more This chapter describes the user-centered design approach we adopted in the development and evaluation of an adaptive Web site. The development of usable Web sites, offering easy and efficient services to heterogeneous users, is a hot topic and a challenging issue for adaptive hypermedia and human-computer interaction. User-centered design promises to facilitate this task by guiding system designers in making decisions, which take the user's needs in serious account. Within a recent project funded by the Italian Public Administration, we developed a prototype information system supporting the online search of data about water resources. As the system was targeted to different types of users, including generic citizens and specialized technicians, we adopted a user-centered approach to identify their information needs and interaction requirements. Moreover, we applied query analysis techniques to identify further information needs and speed up the data retrieval activity. In this chapter, we describe the requirements analysis, the system design, and its evaluation.
Scheduling support is very important for calendar management in order to automatize the execution... more Scheduling support is very important for calendar management in order to automatize the execution of possibly complex reasoning tasks. However, an interactive approach is desirable to enable the user to steer the allocation of events, which is a rather personal and critical kind of activity. This paper proposes a mixed-initiative scheduling model supporting the user's awareness during the exploration of the solution space. The paper describes the temporal reasoning techniques underlying MARA (Mixed-initiAtive calendaR mAnager), focusing on the generation of scheduling options and on the characterization of their properties, needed to present the pros and cons of each possible solution to the user.
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Papers by Liliana Ardissono