Poster presented at the 14th Congress of the European Society for Research in Mathematics Education, Free University of Bozen-Bolsano, Italy.
Key to reinforcement learning in multi-agent systems is the ability to exploit the fact that agents only directly influence only a small subset of the other agents. Such loose couplings are often modelled using a graphical model: a coordination graph. Finding an (approximately) optimal joint action for a given coordination graph is therefore a central subroutine in cooperative multi-agent reinforcement learning (MARL). Much research in MARL focuses on how to gradually update the parameters of the coordination graph, whilst leaving the solving of the coordination graph up to a known typically exact and generic subroutine. However, exact methods { e.g., Variable Elimination { do not scale well, and generic methods do not exploit the MARL setting of gradually updating a coordination graph and recomputing the joint action to select. In this paper, we examine what happens if we use a heuristic method, i.e., local search, to select joint actions in MARL, and whether we can use outcome of this local search from a previous time-step to speed up and improve local search. We show empirically that by using local search, we can scale up to many agents and complex coordination graphs, and that by reusing joint actions from the previous time-step to initialise local search, we can both improve the quality of the joint actions found and the speed with which these joint actions are found.
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The gap between research and design practice has long been a concern for the HCI community. In this article, we explore how different translations of HCI knowledge might bridge this gap. A literature review characterizes the gap as having two key dimensions - one between general theory and particular artefacts and a second between academic HCI research and professional UX design practice. We report on a 5-year engagement between HCI researchers and a major media company to explore how a particular piece of HCI research, the trajectories conceptual framework, might be translated for and with UX practitioners. We present various translations of this framework and fit them into the gap we previously identified. This leads us to refine the idea of translations, suggesting that they may be led by researchers, by practitioners or co-produced by both as boundary objects. We consider the benefits of each approach.
MULTIFILE
The project aims to improve palliative care in China through the competence development of Chinese teachers, professionals, and students focusing on the horizontal priority of digital transformation.Palliative care (PC) has been recognised as a public health priority, and during recent years, has seen advances in several aspects. However, severe inequities in the access and availability of PC worldwide remain. Annually, approximately 56.8 million people need palliative care, where 25.7% of the care focuses on the last year of person’s life (Connor, 2020).China has set aims for reaching the health care standards of the developed countries by 2030 through the Healthy China Strategy 2030, where one of the improvement areas in health care includes palliative care, thus continuing the previous efforts.The project provides a constructive, holistic, and innovative set of actions aimed at resulting in lasting outcomes and continued development of palliative care education and services. Raising the awareness of all stakeholders on palliative care, including the public, is highly relevant and needed. Evidence based practice guidelines and education are urgently required for both general and specialised palliative care levels, to increase the competencies for health educators, professionals, and students. This is to improve the availability and quality of person-centered palliative care in China. Considering the aging population, increase in various chronic illnesses, the challenging care environment, and the moderate health care resources, competence development and the utilisation of digitalisation in palliative care are paramount in supporting the transition of experts into the palliative care practice environment.General objective of the project is to enhance the competences in palliative care in China through education and training to improve the quality of life for citizens. Project develops the competences of current and future health care professionals in China to transform the palliative care theory and practice to impact the target groups and the society in the long-term. As recognised by the European Association for Palliative Care (EAPC), palliative care competences need to be developed in collaboration. This includes shared willingness to learn from each other to improve the sought outcomes in palliative care (EAPC 2019). Since all individuals have a right to health care, project develops person-centered and culturally sensitive practices taking into consideration ethics and social norms. As concepts around palliative care can focus on physical, psychological, social, or spiritual related illnesses (WHO 2020), project develops innovative pedagogy focusing on evidence-based practice, communication, and competence development utilising digital methods and tools. Concepts of reflection, values and views are in the forefront to improve palliative care for the future. Important aspects in project development include health promotion, digital competences and digital health literacy skills of professionals, patients, and their caregivers. Project objective is tied to the principles of the European Commission’s (EU) Digital Decade that stresses the importance of placing people and their rights in the forefront of the digital transformation, while enhancing solidarity, inclusion, freedom of choice and participation. In addition, concepts of safety, security, empowerment, and the promotion of sustainable actions are valued. (European Commission: Digital targets for 2030).Through the existing collaboration, strategic focus areas of the partners, and the principles of the call, the PalcNet project consortium was formed by the following partners: JAMK University of Applied Sciences (JAMK ), Ramon Llull University (URL), Hanze University of Applied Sciences (HUAS), Beijing Union Medical College Hospital (PUMCH), Guangzhou Health Science College (GHSC), Beihua University (BHU), and Harbin Medical University (HMU). As project develops new knowledge, innovations and practice through capacity building, finalisation of the consortium considered partners development strategy regarding health care, (especially palliative care), ability to create long-term impact, including the focus on enhancing higher education according to the horizontal priority. In addition, partners’ expertise and geographical location was also considered important to facilitate long-term impact of the results.Primary target groups of the project include partner country’s (China) staff members, teachers, researchers, health care professionals and bachelor level students engaging in project implementation. Secondary target groups include those groups who will use the outputs and results and continue in further development in palliative care upon the lifetime of the project.
This project addresses the fundamental societal problem that encryption as a technique is available since decades, but has never been widely adopted, mostly because it is too difficult or cumbersome to use for the public at large. PGP illustrates this point well: it is difficult to set-up and use, mainly because of challenges in cryptographic key management. At the same time, the need for encryption has only been growing over the years, and has become an urgent problem with stringent requirements – for instance for electronic communication between doctors and patients – in the General Data Protection Regulation (GDPR) and with systematic mass surveillance activities of internationally operating intelligence agencies. The interdisciplinary project "Encryption for all" addresses this fundamental problem via a combination of cryptographic design and user experience design. On the cryptographic side it develops identity-based and attribute-based encryption on top of the attribute-based infrastructure provided by the existing IRMA-identity platform. Identity-based encryption (IBE) is a scientifically well-established technique, which addresses the key management problem in an elegant manner, but IBE has found limited application so far. In this project it will be developed to a practically usable level, exploiting the existing IRMA platform for identification and retrieval of private keys. Attribute-based encryption (ABE) has not reached the same level of maturity yet as IBE, and will be a topic of further research in this project, since it opens up attractive new applications: like a teacher encrypting for her students only, or a company encrypting for all employees with a certain role in the company. On the user experience design side, efforts will be focused on making these encryption techniques really usable (i.e., easy to use, effective, efficient, error resistant) for everyone (e.g., also for people with disabilities or limited digital skills). To do so, an iterative, human-centred and inclusive design approach will be adopted. On a fundamental level, scientific questions will be addressed, such as how to promote the use of security and privacy-enhancing technologies through design, and whether and how usability and accessibility affect the acceptance and use of encryption tools. Here, theories of nudging and boosting and the unified theory of technology acceptance and use (known as UTAUT) will serve as a theoretical basis. On a more applied level, standards like ISO 9241-11 on usability and ISO 9241-220 on the human-centred design process will serve as a guideline. Amongst others, interface designs will be developed and focus groups, participatory design sessions, expert reviews and usability evaluations with potential users of various ages and backgrounds will be conducted, in a user experience and observation laboratory available at HAN University of Applied Sciences. In addition to meeting usability goals, ensuring that the developed encryption techniques also meet national and international accessibility standards will be a particular point of focus. With respect to usability and accessibility, the project will build on the (limited) usability design experiences with the mobile IRMA application.
In leaving the more traditional territories of the concert performance for broader societal contexts, professional musicians increasingly devise music in closer collaboration with their audience rather than present it on a stage. Although the interest for such forms of devising co-creative musicking within the (elderly) health care sector is growing, the work can be considered relatively new. In terms of research, multiple studies have sought to understand the impact of such work on musicians and participants, however little is known about what underpins the musicians’ actions in these settings. With this study, I sought to address this gap by investigating professional musicians’ emerging practices when devising co-creative musicking with elderly people. Three broad concepts were used as a theoretical background to the study: Theory of Practice, co-creative musicking, and Praxialism. Firstly, I used Theory of Practice to help understand the nature of emerging practices in a wider context of change in the field of music and habitus of musicians and participants. Theory of Practice enabled me to consider a practice as “a routinized type of behaviour which consists of several elements, interconnected to one another: forms of bodily activities, forms of mental activities, ‘things’ and their use, a background knowledge in the form of understanding, know-how, states of emotion, and motivational knowledge” (Reckwitz, 2002, p. 249). Secondly, I drew the knowledge from co-creative musicking, which is a concept I gathered from two existing concepts: co-creation and musicking. Musicking (Small, 1998), which considers music as something we do (including any mode of engagement with music), provided a holistic and inclusive way of looking at participation in music-making. The co-creation paradigm encompasses a view on enterprise that consists of bringing together parties to jointly create an outcome that is meaningful to all (Prahalad & Ramaswamy, 2004; Ramaswamy & Ozcan, 2014). The concept served as a lens to specify the jointness of the musicking and challenge issues of power in the engagement of participants in the creative-productive process. Thirdly, Praxialism considers musicking as an activity that encompasses “musical doers, musical doing, something done and contexts in which the former take place” (Elliott, 1995). Praxialism sets out a vision on music that goes beyond the musical work and includes the meanings and values of those involved (Silverman, Davis & Elliott, 2014). The concept allowed me to examine the work and emerging relationships as a result of devising co-creative musicking from an ethical perspective. Given the subject’s relative newness and rather unexplored status, I examined existing work empirically through an ethnographic approach (Hammersley & Atkinson, 2007). Four cases were selected where data was gathered through episodic interviewing (Flick, 2009) and participant observation. Elements of a constructivist Grounded Theory (Charmaz, 2014) were used for performing an abductive analysis. The analysis included initial coding, focused coding, the use of sensitizing concepts (Blumer 1969 in Hammersley, 2013) and memoing. I wrote a thick description (Geertz, 1973) for each case portraying the work from my personal experience. The descriptions are included in the dissertation as one separate chapter and foreshadow the exposition of the analysis in a next chapter. In-depth study of the creative-productive processes of the cases showed the involvement of multiple co-creative elements, such as a dialogical interaction between musicians and audience. However, participants’ contributions were often adopted implicitly, through the musicians interpreting behaviour and situations. This created a particular power dynamic and challenges as to what extent the negotiation can be considered co-creative. The implicitness of ‘making use’ of another person’s behaviour with the other not (always) being aware of this also triggered an ethical perspective, especially because some of the cases involved participants that were vulnerable. The imbalance in power made me examine the relationship that emerges between musicians and participants. As a result of a closer contact in the co-creative negotiation, I witnessed a contact of a highly personal, sometimes intimate, nature. I recognized elements of two types of connections. One type could be called ‘humanistic’, as a friendship in which there is reciprocal care and interest for the other. The other could be seen as ‘functional’, which means that the relationship is used as a resource for providing input for the creative musicking process. From this angle, I have compared the relationship with that of a relationship of an artist with a muse. After having examined the co-creative and relational sides of the interaction in the four cases, I tuned in to the musicians’ contribution to these processes and relationships. I discovered that their devising in practice consisted of a continuous double balancing act on two axes: one axis considers the other and oneself as its two ends. Another axis concerns the preparedness and unpredictability at its ends. Situated at the intersection of the two axes are the musicians’ intentionality, which is fed by their intentions, values and ethics. The implicitness of the co-creation, the two-sided relationship, the potential vulnerability of participants, and the musicians’ freedom in navigating and negotiation, together, make the devising of co-creative musicking with elderly people an activity that involves ethical challenges that are centred around a tension between prioritizing doing good for the other, associated with a eudaimonic intention, and prioritizing values of the musical art form, resembling a musicianist intention. The results therefore call for a musicianship that involves acting reflectively from an ethical perspective. Doctoral study by Karolien Dons
