To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure no-reply@cambridge.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Sugar-sweetened beverage taxes have been widely evaluated; however, less is known about the effects of taxes on unhealthy foods. This study examines the effects of Tonga’s food taxes on food prices and import volumes.
Design:
Interrupted time series analysis using segmented linear regression was used to evaluate tax impacts on both retail prices and import volumes of taxed foods. Observed post-tax trends were compared with a counterfactual. The counterfactual was the projected pre-tax trends, with adjustment for autocorrelation and changes in GDP, tourism, season, exchange rates and oil prices over time. Random effects meta-analysis was used to summarise outcomes across food types.
Setting:
Nine Tongan food tax increases were examined, varying from US$0·17/kg to US$1·08/kg, and averaging 28 % of import value.
Results:
In the first-year post-tax, retail prices increased for ten of eleven taxed foods, with an average increase of 13 % (95 %CI: 5 % to 21 %). Price increases for chicken pieces (46 % and 39 %), mutton flaps (20 %), corned beef (20 %), ice cream (11 %), salted beef (6 %) and mayonnaise (3 %) were statistically significant. Import volumes decreased for eight of nine taxed foods with a mean decrease of 41 % (95 %CI: 17 % to 58 %). Import decreases for sausages (68 %) and ice cream (72 %) were significant.
Conclusions:
Consistent with economic theory, excise taxes on unhealthy foods in Tonga were associated with increases in retail prices and decreased imports of taxed foods. These findings add to the limited evidence base that excise taxes on unhealthy foods can effectively raise prices and reduce supply.
This paper presents a comparative study of neural machine translation (MT) models and large language models, emphasizing translation literalness, lexical diversity, and translation quality. We evaluate open-source neural machine translation (NMT) models, LLaMa 3.1 Instruct, and GPT-4o across nine language pairs in pretrained, fine-tuned, and few-shot prompting settings. This comprehensive analysis underscores the differential strengths of each model, contributing valuable insights into their respective utility in MT. Our findings in the literary and news domains show that fine-tuning reduces translation literalness, allowing freer translations across models, most strongly for LLaMa, which produces the least literal translations across domains. The effect of fine-tuning on lexical diversity is model-dependent: it decreases consistently for LLaMa but remains stable or is improved for NMT. Few-shot prompting, on the other hand, enhances GPT-4o’s lexical diversity across domains and significantly boosts its translation quality in the literary domain, yielding the highest overall COMET scores. Furthermore, our correlation analysis reveals a distinct domain effect: literary translation evaluation rewards diversity, whereas news translation evaluation favors literalness. Overall, the results highlight complementary strengths: few-shot GPT-4o for high-quality, lexically rich translations with low error rates, and fine-tuned LLaMa for freer, less literal translations.
This chapter provides an overview of user experience (UX), particularly focusing on the UX of human-centred machine learning (HCML). In this chapter we will focus on “less standard” measures that are particularly relevant in HCML; other measures such as accuracy are already covered very well in standard ML approaches. Central to our notion of HCML is that the set of people who are users of ML is much broader and also distinctive compared to other domains. For example, these “users” might be people who use the final system in their work or everyday lives, or people who help develop the HCML, or indeed regulators and assessors of these systems. In this chapter, we will outline what aspects to measure for assessing the UX of HCML systems and how to measure them. We conclude by looking at open research areas in measuring the UX of HCML.
Using examples from Bishop’s letters and diaries, as well as more recent theoretical accounts, the introduction explores various meanings of the word ‘style’ and their pertinence to Bishop’s work. The introduction highlights the predominance of biographical criticism in works on Bishop (and other twentieth-century writers) and instead argues for the importance of stylistic criticism. This chapter goes on to delineate two broader trends in contemporary literary criticism – historicist on the one hand, formalist on the other – and outlines their shortcomings in understanding the nuances of particular poems and literary works. The chapter then outlines this book’s focus on several aspects of style across Bishop’s entire oeuvre, including cliché, simile, allusion, and correctio. The introduction ends by arguing that aesthetic evaluation and judgement are central to the responsible and rigorous practice of literary criticism.
This chapter examines two dimensions of AI assurance for systems designed to assist unrepresented litigants: (1) reliability and (2) privacy and accountability. Reliability encompasses accuracy, calibration, robustness, and bias. Privacy and accountability involve balancing data needs with the protection of sensitive information and ensuring the responsible deployment of AI. These considerations take on heightened importance given unrepresented litigants’ unique vulnerabilities and legal contexts.
Reliability standards must be higher for unrepresented litigants, who cannot verify AI outputs, than for legal professionals, who can exercise oversight. Privacy and accountability challenges arise from AI systems’ need for vast training datasets containing sensitive legal information, creating tensions between the effectiveness of these systems and data protection rights under frameworks such as the General Data Protection Regulation (“GDPR”) and the EU AI Act.
Effective AI assurance requires interdisciplinary collaboration between technologists and legal stakeholders to develop appropriate methodologies for defining, measuring, and verifying both reliability and privacy protections in legal AI systems.
This chapter shows how Minerva authors championed the Press, taught readers how to read them and helped to shift the culture in proto-Victorian ways. It collects together the solutions that women authors proposed to the range of domestic, social and political issues they tackled, argues that their iterative imitations created a community of readers, as well as of writers, and evaluates Minerva Press fiction by the Aesthetics of Reuse.
What did 'style' mean to Elizabeth Bishop? And what does 'style' mean to contemporary literary criticism? This book breaks ground in three broad areas: first, it provides a new, comprehensive interpretation of Bishop's style, one that considers her poetry, naturally, but also her various prose writings. Second, it incorporates new analyses of common literary techniques-including simile, allusion, cliché and 'correctio' (artificial self-corrections)-into an examination of Bishop's vast reading of writers in several languages from the late medieval period to the present. Third, it models new ways of reading Bishop and other authors, and thus intervenes in debates about the roles of judgement, aesthetics, and politics in literary criticism. Besides the international community of Bishop critics and teachers, Elizabeth Bishop's Styles of Writing will appeal to critics of twentieth-century literature, poetics and women's writing, as well as general readers interested in poetry and literary history, style, and influence.
This chapter addresses the evaluation of qualitative causal inferences, focusing on how to assess whether claims about causal continuity and discontinuity are credible. Building on the framework of bias-free causal graphs, it explains the iterative process of testing causal relationships through hypothetical interventions. Three types of claims are central: that a causal process could have produced the outcome (front-door continuity), could not have done so via a pre-treatment mechanism (back-door discontinuity), and would not have occurred through other unrelated causes (side-door discontinuity). The chapter develops a multilevel evaluation strategy. At the micro-level, it introduces three measures – theoretical plausibility, mechanistic credibility, and descriptive validity – for judging individual claims about hypothetical interventions between adjacent nodes. At the path level, it examines how these claims aggregate across front-, back-, and side-door paths to assess whether bias can be excluded. At the graph level, it considers the overall plausibility of substituting a bias-free graph for a bias-saturated one, outlining possible combinations of satisfied and unsatisfied criteria. Finally, the chapter proposes remedial measures for cases where bias cannot be eliminated. These include signing the bias, estimating relative magnitudes of effects, and discretizing outcomes. Even when systematic error remains, the method enhances transparency and strengthens the epistemic value of qualitative research.
Suboptimal product design and compliance failures lead to economic losses. While AI excels in domain-specific tasks like defect detection, existing solutions lack cross-domain reasoning and explainability. This paper presents Product Singularity, a universal AI framework that integrates multimodal data (images, text, etc) for comprehensive product evaluation across quality, safety, performance, ergonomics, and compliance. A proof-of-concept in consumer bottles validated by experts achieved 90% agreement and reduced evaluation time. Its modular design supports adaptation to other product categories.
This study evaluates two approaches for sustainable product development and their complementarity through workshops and surveys in four companies. Findings show high perceived usefulness but lower usability, with applicability dependent on integration into existing processes. The study identifies value-carrying characteristics – clarity, adaptability, and process linkage – and highlights improvement needs. Results offer guidance for developing coherent methodological support to enable systemic, systematic, and strategic sustainability decisions in early design phases.
This article argues for a re-evaluation of the current orthodoxy in artificial intelligence (AI) regulation, driven by the inconvenient reality that existing mechanisms for measuring AI capabilities are inadequate for the task of evaluating general-purpose AI. Lawmakers and legal scholars alike have drastically overestimated our understanding of frontier AI systems and how they work. Nascent governance frameworks often assume a basic capacity for evaluating general-purpose AI that is simply not supported by the technical literature – they are built on a house of cards. The rapid pace of progress on the AI frontier has taken general-purpose AI past the point where a human expert can reliably interpret or interrogate their behaviour, particularly to the legal standards that lawmakers have codified to date. This article explores how technological complexities within general-purpose AI create sui generis challenges for regulators and the law. Faced with the prospect of an anthropocentric ceiling to efforts to understand frontier AI systems, this article proposes a new paradigm for lawmakers, Sentinel Governance, grounded in governance-oriented innovation and experimentation to supplement human oversight of AI. New mechanisms for evaluation and enforcement are needed to avoid AI regulations subsiding into a checkbox exercise.
What does training look like such that one’s improvisation can be experienced as spontaneous? In this paper, I explore how the aesthetics of “freestyle” in street dance are constituted by empirically achieved bodily capacities contingent upon recognitions. Through examining the pedagogy of freestyle, I show how semiotic labor registers the apparent solipsism of freestyle in street dance into reflexive accounts of sensory-affective capacities selected for cultivation, scaffolded through the deployment of terms like “feeling” and “relation” within participation frameworks. I suggest that ethnographic approaches to the relationship between discursive and non-discursive dimensions of aesthetic-social practices, such as street dance, need to remain both affectively attuned to and semiotically informed, attending to how sensory-affective experiences are rendered discernible and enactable within intersubjective spaces. In addition to exploring these semiotic processes, I also gesture toward the evaluative dimensions of street dance through my fieldwork in a local community in the US and my participation in its transnational scene.
The Conclusion urges us to consider practices that lead to becoming ‘valuable people’ as something that goes beyond overcoming stigma to changing the evaluations that define what is good. It brings the discussions about values together with a final example of how my interlocutors pursued valued inclusion, by embracing a biomedical model of personhood where people are judged on their minds rather than on their bodies. This draws attention to the wider relevance of questions of entitlement, distribution, and values: wherever my interlocutors went, discussions of values followed.
Assembling and evaluating warrant for your claims involves giving reasons why these claims might be true or false. Such reasons may be understood as consisting of conjunctions of factual and relevance claims which may be adduced in favour of the claims in question. These claims themselves may in turn be warranted by further such conjunctions, and so on through indefinite higher ‘levels’ of evidence. We show how to structure relevant claims into an evidence role-map. We set out how to apply this to indirect local evidence, referencing a situation-specific causal equation model of each causal step. By reference to our pluralistic account of causation, we identify eight categories of evidence for each step. We introduce a notation for this approach and illustrate it using the Barbados sugar-sweetened beverage tax example, describing its use in post-hoc evaluation and ex ante prediction.
Exploring the use of our methods has highlighted the importance of defining the boundaries of the system being studied and attending to features of underlying systems that afford causal processes. We note that our limited application of our methods cannot confirm that all the implementation actions were necessary, though our examination of L shows how this might be shown by broader study. We note that, while our methods may seem daunting, they’re no more detailed than statistical methods used in quantitative research and have practical advantages in supplying more detailed qualitative evaluations. They may also be used for ex ante appraisal. We stress the importance of understanding mechanisms in practical research and note that actual research involves back-and-forth between evidence and theories of change, even though we detail the former first in our evaluation. We note the value of such evaluations in combatting problems such as, relevantly, costly failed reforms.
As a further example of our approach, we offer a detailed post-hoc case study of the implementation of the Signs of Safety practice approach in child protection. This is chosen because it has been deployed in multiple places but evidence suggests it is often only partially implemented. Our case study is of a child protection agency M which evidence shows achieved a high standard of implementation. In this case study we had a rich evidence base to work with, both of background research on child protection implementations able to provide evidence from afar of systemic factors that might be causally important and of local evidence available from extensive contemporaneous documentation in M. Our method helps to illustrate and explain the range of changes needed to support Signs of Safety as the organisational practice approach in M.
Different sorts of evidence for a singular causal claim impact its overall warrant in different ways. We show how to assemble the evidence we have identified to provide an overall assessment of its strength of support/warrant for claims at issue, giving a rough guide to the significance of particular kinds of evidence within our schema and the identification of gaps in the evidence. This cannot be too formal a process (you shouldn’t pretend to more precision than is available) but we suggest the use of arguments to make sense of relations between pieces of evidence and causal claims, as per Fuller et al., and proper application of the ‘weakest link’ principle. We offer a catalogue of nodes to incorporate into such arguments based on our evidence categories.
In this book, Nancy Cartwright, Eileen Munro and John Pemberton introduce a new method for assessing whether plans for how to affect change produced their intended outcome, or whether they are likely to do so in the future. The method offers the prospect of a step-change improvement in the accuracy of policy assessments, based on a new pluralistic theory of causation. This theory, which goes beyond existing ones, synthesises seven tried and tested familiar component accounts so as to license identification and systematisation of a wide range of evidence types. The authors outline well-grounded improvements to methods for policy development and assessment by the systematic use of real-world examples, including notably that of child welfare. Their book will be valuable for the burgeoning audience concerned with the critical issue of how to develop and implement policies that work across domains from welfare to education and economics to medicine.
Online counselling services have seen increased use in recent years, providing critical emergency mental health support. These interactions are typically long, complex, and varied in the dialogue between help seekers and counsellors. The lack of domain-specific models, especially in low-resource languages, poses a significant challenge for the automatic detection of suicide risk in online chat services for mental health support. To address this challenge, our approach adapts a general-purpose large language model (LLM) to the suicide prediction task that employs a two-stage classification architecture to deal with sparse and imbalanced data. It extends the state of the art by: (1) incorporating psychological theory into model training and (2) capturing key aspects of conversation structure in counselling sessions. We evaluate the performance of the proposed LLM against the state-of-the-art LLMs for suicide detection on thousands of conversations in the Hebrew language from a leading national online counselling service in Israel. Results show that the proposed LLM outperformed existing state-of-the-art approaches in detecting suicide risk, as measured by relevant literature metrics. Moreover, the LLM outperforms other approaches even in the early stages of a conversation, which is crucial for real-time detection in practice. We also discuss the ethical implications of combining LLMs in counselling services. The contributions of this work are (1) extending existing LLM architectures to incorporate domain-specific information; (2) evaluating LLM technologies in the context of socially relevant problems; and (3) introducing novel LLM tools for resource-constrained languages.
During the Minerva Press's heyday, founder William Lane published in an extraordinary range of genres. Following the original organizational taxonomy that Lane used in his own promotional materials, Eve Tavor Bannet here explores each: Historical fiction, Terror and Mystery Fiction ('Gothic'), Fairy Tales, Tales of the Times, National Tales, Wanderers Tales, Novels of Education, Female Biography and Marital Domestic Fiction. In providing the first modern analysis of the majority of texts that Lane published, she reveals how the Minerva Press bridged the gap between eighteenth- and nineteenth-century fiction and sheds light on how contemporary methods of imitative writing produced its characteristically fluid, hybrid and modular fictions. These characteristics, she demonstrates, enabled its women authors to converse with one another, intervening in key contemporary political, cultural and domestic debates and earned many well-deserved popularity and praise from those judging by the pre-Romantic methods of evaluation in use.