Paul Marshall’s research while affiliated with University of Bristol and other places

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Publications (126)


Figure 1: Harvesting environment. (a) Capabilities harvest scenario explores how agents learn to identify and reach desired berries while considering the well-being of the society. (b) Allotment harvest scenario explores how agents learn to harvest within their desired areas while considering the well-being in the society.
Norm parameters.
Comparing ag resource , inequality, minimum experi- ence, and robustness of baseline and RAWL·E societies in allotment harvest scenario. Grey highlight indicates best re- sults with significance at p < 0.01.
Parameters for simulation experiments.
Parameters of the Interaction Module.

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Operationalising Rawlsian Ethics for Fairness in Norm-Learning Agents
  • Preprint
  • File available

December 2024

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10 Reads

Jessica Woodgate

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Paul Marshall

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Social norms are standards of behaviour common in a society. However, when agents make decisions without considering how others are impacted, norms can emerge that lead to the subjugation of certain agents. We present RAWL-E, a method to create ethical norm-learning agents. RAWL-E agents operationalise maximin, a fairness principle from Rawlsian ethics, in their decision-making processes to promote ethical norms by balancing societal well-being with individual goals. We evaluate RAWL-E agents in simulated harvesting scenarios. We find that norms emerging in RAWL-E agent societies enhance social welfare, fairness, and robustness, and yield higher minimum experience compared to those that emerge in agent societies that do not implement Rawlsian ethics.

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Figure 1. Left-The AI4CI Loop: Machine learning and AI enable distributed real-time data streams to inform effective collective action via smart agents. Right-The AI4CI Hub: Five applied research themes and two cross-cutting research themes are supported by the hub's central core.
Figure 2. An indicative snapshot of smart city datasets informing AI for collective intelligence research. Gentrification and displacement typologies for Greater London in 2011 at neighbourhood level with cartogram distortion based on London's residential population in 2011. Adapted from Zhang et al. (2020).
Figure 3. A snapshot of pandemic datasets informing AI for collective intelligence research. Regionally disaggregated datasets relate the level and growth rate of COVID-19 cases (phase plots) with the rate of digital contact tracing alerts delivered to citizens by the NHS mobile phone app (maps) at two points in time during the COVID-19 pandemic. Left-December 20 th 2020: the alpha variant is spreading in the south-east despite a 'circuit-breaker' lockdown. Right-July 31 st 2021: Digital contact tracing alerts are triggered by high COVID-19 case burden.
Examples of how three different categories of unifying research challenge apply within five different AI for collective intelligence application domains
Artificial intelligence for collective intelligence: a national-scale research strategy

December 2024

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16 Reads

The Knowledge Engineering Review

Seth Bullock

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Mike Batty

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[...]

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Hywel T. P. Williams

Advances in artificial intelligence (AI) have great potential to help address societal challenges that are both collective in nature and present at national or transnational scale. Pressing challenges in healthcare, finance, infrastructure and sustainability, for instance, might all be productively addressed by leveraging and amplifying AI for national-scale collective intelligence . The development and deployment of this kind of AI faces distinctive challenges, both technical and socio-technical. Here, a research strategy for mobilising inter-disciplinary research to address these challenges is detailed and some of the key issues that must be faced are outlined.


Figure 2: An indicative snapshot of smart city datasets informing AI for collective intelligence research. Gentrification and displacement typologies for Greater London in 2011 at neighbourhood level with cartogram distortion based on London's residential population in 2011. Adapted from Zhang et al. (2020).
Examples of how three different categories of unifying research challenge apply within five different AI for collective intelligence application domains.
Artificial Intelligence for Collective Intelligence: A National-Scale Research Strategy

November 2024

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28 Reads

Advances in artificial intelligence (AI) have great potential to help address societal challenges that are both collective in nature and present at national or trans-national scale. Pressing challenges in healthcare, finance, infrastructure and sustainability, for instance, might all be productively addressed by leveraging and amplifying AI for national-scale collective intelligence. The development and deployment of this kind of AI faces distinctive challenges, both technical and socio-technical. Here, a research strategy for mobilising inter-disciplinary research to address these challenges is detailed and some of the key issues that must be faced are outlined.




Figure 1. Data collection on WhatsApp (Meta Platforms, Inc) enabled by Twilio (Twilio Inc).
A Quantitative Report on Type 2 Diabetes Care in Port Harcourt: Insights into Socio-demographic Influences and Opportunities for Digital Health Promotion (Preprint)

January 2024

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11 Reads

JMIR Diabetes

Background A significant percentage of the Nigerian population has type 2 diabetes (T2D), and a notable portion of these patients also live with comorbidities. Despite its increasing prevalence in Nigeria due to factors such as poor eating and exercise habits, there are insufficient reliable data on its incidence in major cities such as Port Harcourt, as well as on the influence of sociodemographic factors on current self-care and collaborative T2D care approaches using technology. This, coupled with a significant lack of context-specific digital health interventions for T2D care, is our major motivation for the study. Objective This study aims to (1) explore the sociodemographic profile of people with T2D and understand how it directly influences their care; (2) generate an accurate understanding of collaborative care practices, with a focus on nuances in the contextual provision of T2D care; and (3) identify opportunities for improving the adoption of digital health technologies based on the current understanding of technology use and T2D care. Methods We designed questionnaires aligned with the study’s objectives to obtain quantitative data, using both WhatsApp (Meta Platforms, Inc) and in-person interactions. A social media campaign aimed at reaching a hard-to-reach audience facilitated questionnaire delivery via WhatsApp, also allowing us to explore its feasibility as a data collection tool. In parallel, we distributed surveys in person. We collected 110 responses in total: 83 (75.5%) from in-person distributions and 27 (24.5%) from the WhatsApp approach. Data analysis was conducted using descriptive and inferential statistical methods on SPSS Premium (version 29; IBM Corp) and JASP (version 0.16.4; University of Amsterdam) software. This dual approach ensured comprehensive data collection and analysis for our study. Results Results were categorized into 3 groups to address our research objectives. We found that men with T2D were significantly older (mean 61 y), had higher household incomes, and generally held higher academic degrees compared to women (P=.03). No statistically significant relationship was found between gender and the frequency of hospital visits (P=.60) or pharmacy visits (P=.48), and cultural differences did not influence disease incidence. Regarding management approaches, 75.5% (83/110) relied on prescribed medications; 60% (66/110) on dietary modifications; and 35.5% (39/110) and 20% (22/110) on traditional medicines and spirituality, respectively. Most participants (82/110, 74.5%) were unfamiliar with diabetes care technologies, and 89.2% (98/110) of those using technology were only familiar with glucometers. Finally, participants preferred seeking health information in person (96/110, 87.3%) over digital means. Conclusions By identifying the influence of sociodemographic factors on diabetes care and health or information seeking behaviors, we were able to identify context-specific opportunities for enhancing the adoption of digital health technologies.


A Quantitative Report on Type 2 Diabetes Care in Port Harcourt: Insights into Socio-demographic Influences and Design Opportunities (Preprint)

January 2024

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4 Reads

BACKGROUND A significant percentage of the Nigerian population suffers from Type 2 Diabetes, and a notable portion of these patients also live with other co-morbidities such as hypertension and cardiovascular disease. Despite its increasing prevalence in Nigeria due to factors such as poor eating and exercise habits, there is insufficient reliable data on its incidence in major cities like Port Harcourt, as well as the influence of socio-demographic factors on current self- and collaborative T2D care approaches using technology. This, and the recurring top-down approach, i.e., from the global north to the global south of creating solutions, has resulted in a significant lack of context-specific digital health interventions for T2D care. OBJECTIVE The study aims to identify opportunities for designing context-specific digital health interventions for Type 2 Diabetes management, by understanding the influence of socio-demographic factors on self and collaborative care involving patients, caregivers, and community pharmacists, as well as current digital health approaches for Type 2 Diabetes care. METHODS We designed questionnaires aligned with the study’s objectives to obtain quantitative data, using the WhatsApp environment and in-person interactions. Following a social media campaign aimed at expanding our reach to a hard-to-reach audience, we delivered the questionnaires through WhatsApp. We also used this opportunity to explore the feasibility of WhatsApp as a data collection tool in our research context, mirroring studies that were conducted in a different context. In total, we obtained 110 responses, with 83 responses from in-person distributions and 27 responses from the WhatsApp approach. Finally, data was analyzed using descriptive and inferential statistical approaches on SPSS and JASP software. RESULTS Results were categorized into three, comprising socio-demographic characteristics of diabetes patients in our research context, collaborative care involving different stakeholders, and current digital health approaches for the management of Type 2 Diabetes. We discovered that men with Type 2 Diabetes were significantly older (mean = 61 years), had a higher average household income, and generally held higher academic degrees compared to women (P = .03). We also discovered that there was no statistically significant relationship between gender and the frequency of hospital (P = .597) or pharmacy visits (P = .480), and cultural differences did not influence the incidence of the disease. Regarding current management approaches, 75.45% and 60% of the population relied on prescribed medications and dietary modifications respectively, while 35.45% and 20% explored traditional medicines and spirituality respectively. Most participants were unfamiliar with technologies for diabetes care (74.54%), and 89.21% of participants who indicated their use of technology were only familiar with glucometers. Finally, participants were more inclined to seek for health information in person (87.27%) than through digital means CONCLUSIONS By identifying the influence of socio-demographic factors on diabetes care and health/information seeking behaviors, we were able to identify opportunities for designing context-specific digital health interventions for diabetes care.




Figure 2: Visualisation of our search query.
Figure 4: Distribution of papers across venues.
Figure 8: Number of papers for each age.
Figure 9: The types of the studies reported in our corpus.
User study participants: reporting trends.
Designing for Care Ecosystems: a Literature Review of Technologies for Children with ADHD

June 2022

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341 Reads

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17 Citations

This paper presents a systematic review of HCI literature focusing on children with ADHD, the prevailing mental health diagnosis in children. Its aim is to (i) chart the state-of-the-art in this domain (e.g. methods used), (ii) identify the ways the HCI community has addressed the needs of children with ADHD (e.g. technologies deployed), and (iii) describe the involvement of the various stakeholders playing a role in their everyday experiences (i.e. their care ecosystem). Our findings show limited engagement of the care ecosystem in the design, development and user studies of current technologies, and shortcomings in designing for multiple ecosystem stakeholders, despite their crucial role. We also find that most HCI contributions are systems aiming to address ADHD-related symptoms. Based on our findings, we provide suggestions for further research and design considerations for future systems that empower and promote the well-being of children with ADHD, while considering their care ecosystem.


Citations (86)


... Recently, healthcare management has been undergoing a transformative evolution with the integration of self-monitoring, monitoring, and patient journey tracking into a unified system [30]. By utilizing real-time data, personalized care plans, and continuous feedback, healthcare providers can significantly enhance patient outcomes, improve operational efficiency, and deliver high-quality, cost-effective care. ...

Reference:

Health Community 4.0: An Innovative Multidisciplinary Solution for Tailored Healthcare Assistance Management
“I think it saved me. I think it saved my heart”: The Complex Journey From Self-Tracking With Wearables To Diagnosis
  • Citing Conference Paper
  • May 2024

... The management of the condition involves pharmacotherapy, which includes using hypoglycemic drugs (eg, sulfonylureas and meglitinides) and lifestyle modifications focusing on exercise and diet [36,37]. Digital interventions also play a role across different stages of T2D care, including diagnosis or prognosis with rapid test kits or machine-learning algorithms [38] and providing information, remote monitoring, and lifestyle modifications through mobile apps and websites [2,39,40]. Continuous glucose monitoring systems for blood sugar sensing and personalized medicine [41][42][43] are also critical components. Because T2D is a long-term condition that requires constant monitoring, its care involves self-management by people with the condition and collaborative care with both caregivers and health care practitioners in both formal and informal settings. ...

Exploring the nexus of Social Media Networks and Instant Messengers in Collaborative Type 2 Diabetes care: A Case Study of Port Harcourt, Nigeria
  • Citing Conference Paper
  • January 2024

... This number is expected to grow [33]. Scholars have reviewed these apps [4,12,15,20], and found that these services typically include features which support users logging/charting their blood sugar readings, insulin dosages, and foods eaten. Other common features include providing users with educational tips and advice on how to manage T1D [22,36,45]. ...

Computational Notebooks as Co-Design Tools: Engaging Young Adults Living with Diabetes, Family Carers, and Clinicians with Machine Learning Models
  • Citing Conference Paper
  • April 2023

... This work leverages cutting-edge privacy preserving and federated machine learning methodologies to enable machine learning on data across all the sources interactively and in real-time while guaranteeing that the identity of the individual patients and the data they provide will not be leaked through for example training-data leakage attacks (Chen & Campbell, 2022). Strand (ii) works with hard-to-reach patients (those suffering from secondary health conditions, mental health conditions, or living circumstances that prevent them from accessing health care unaided and limit their use of technology), plus their carers and clinicians, to address issues of trust, usability and efficacy in ethical AI for informing healthcare decision making across patient populations (Stawarz et al., 2023). The over-arching challenge for both strands is to leverage population-wide data collection for informing robust individualised decision-making without compromising anonymity and under realistic data and user assumptions. ...

Co-designing opportunities for Human-Centred Machine Learning in supporting Type 1 diabetes decision-making
  • Citing Article
  • February 2023

International Journal of Human-Computer Studies

... This gap is even more pronounced in pediatric research, where managing hypoglycemia is compounded by the unpredictability of children's routines and hormonal changes leading to insulin resistance 24 . Earlier studies present diverse methods for BG prediction, e.g., autoregressive moving-average models and various machine learning algorithms [25][26][27][28] . While recent models employing neural networks and ensemble machine learning show promise [29][30][31][32][33] , the complexity of pediatric diabetes is proving harder to model; some research aims at improvement by constraining time periods, e.g., nocturnal hypoglycemia prediction models and variable importance plot feature selection 34,35 . ...

Explainable Machine Learning for Real-Time Hypoglycemia and Hyperglycemia Prediction and Personalized Control Recommendations

Journal of Diabetes Science and Technology

... In fact, Merino et al. suggest that "understanding the role of MR/AR in working places and in communication and collaboration" [26] represents an important opportunity for humancentered evaluations. This can be made by running evaluation out of the laboratory in concrete scenarios of application, or in a remote manner where researchers may or may-not supervise participants [26,33,36,37]. The importance of the last has even been emphasized by the circumstances associated with the COVID-19 Pandemic, which forced research teams worldwide to adopt new methods [30,38]. ...

Case Studies: Designing and Evaluating Technologies for Use in the Wild
  • Citing Chapter
  • January 2017

Synthesis Lectures on Human-Centered Informatics

... As the field study was conducted within a research "in-the-wild" approach [54,55], we had to administer short questionnaires to fit into the tight training schedule of the police professionals. Thus, this questionnaire was designed for our study, drawing from existing scales on presence and technology acceptance and including uniquely crafted items to target our research objectives. ...

Approaches to Conducting Research in The Wild
  • Citing Chapter
  • January 2017

Synthesis Lectures on Human-Centered Informatics

... Though such attempts were made, they implemented similar, one-dimensional assessment questions. And, as has been critically pointed out before, consideration of a general audience, which will inevitably involve people with different ability levels, is still in need of improvement in visualization research [3,4,40]. ...

Research in the Wild
  • Citing Book
  • January 2017

Synthesis Lectures on Human-Centered Informatics

... Human-Computer Interaction (HCI) and Child-Computer Interaction (CCI) researchers have increasingly explored technologies to support ADHD children and their care ecosystem [114]. Recent studies have highlighted various limitations in existing approaches for creating and evaluating technologies for neurodivergent individuals [109,110], particularly those with ADHD [111,114]. ...

Designing for Care Ecosystems: a Literature Review of Technologies for Children with ADHD

... Steve and Yuen observe that AR applications, now portable and operable on mobile devices, have permeated various aspects of daily life. The feasibility of AR technology allows users instant access to location-specific information compiled from multiple sources [5]. This suggests that AR could effectively project current media information onto AR applications, potentially becoming one of the first widely adopted applications on any AR device. ...

‘What lies behind the filter?’ Uncovering the motivations for using augmented reality (AR) face filters on social media and their effect on well-being
  • Citing Article
  • March 2022

Computers in Human Behavior