Accurator: Nichesourcing for Cultural Heritage

With more and more cultural heritage data being published online, their usefulness in this open context depends on the quality and diversity of descriptive metadata for collection objects. In many cases, existing metadata is not adequate for a variety of retrieval and research tasks and more specific annotations are necessary. However, eliciting such annotations is a challenge since it often requires domain-specific knowledge. Where crowdsourcing can be successfully used for eliciting simple annotations, identifying people with the required expertise might prove troublesome for tasks requiring more complex or domain-specific knowledge. Nichesourcing addresses this problem, by tapping into the expert knowledge available in niche communities. This paper presents Accurator, a methodology for conducting nichesourcing campaigns for cultural heritage institutions, by addressing communities, organizing events and tailoring a web-based annotation tool to a domain of choice. The contribution of this paper is threefold: 1) a nichesourcing methodology, 2) an annotation tool for experts and 3) validation of the methodology and tool in three case studies. The three domains of the case studies are birds on art, bible prints and fashion images. We compare the quality and quantity of obtained annotations in the three case studies, showing that the nichesourcing methodology in combination with the image annotation tool can be used to collect high quality annotations in a variety of domains and annotation tasks. A user evaluation indicates the tool is suited and usable for domain specific annotation tasks

Preventing Domestic Abuse for Children and Young People (PEACH): A Mixed Knowledge Scoping Review

Background: A range of interventions that aim to prevent domestic abuse has been developed for children and young people in the general population. While these have been widely implemented, few have been rigorously evaluated. This study aimed to discover what was known about these interventions for children and what worked for whom in which settings. Review methods: This mixed knowledge review was informed by realist principles and comprised four overlapping phases: an online mapping survey to identify current provision; a systematic review of the existing literature; a review of the UK ‘grey’ literature; and consultation with young people and experts. Information from these four sources of evidence informed analysis of costs and benefits. Results: The evidence for interventions achieving changes in knowledge and attitudes was stronger than that for behavioural change. Shifting social norms in the peer group emerged as a key mechanism of change. Media campaigns act to influence the wider social climate within which more targeted interventions are received, and they are also a source for programme materials. While most interventions are delivered in secondary schools, they are increasingly targeted at younger children. The review emphasised the importance of a school’s ‘readiness’ to introduce preventative interventions which need to be supported across all aspects of school life. Involving young people in the design and delivery of programmes increases authenticity and this emerged as a key ingredient in achieving impact. Longer interventions delivered by appropriately trained staff appeared likely to be more effective. Teachers emerged as well placed to embed interventions in schools but they require training and support from those with specialist knowledge in domestic abuse. There was evidence that small groups of students who were at higher risk might have accounted for some results regarding effectiveness and that programme effectiveness may vary for certain subgroups. Increasingly, boys are being identified as a target for change. The study identified a need for interventions for disabled children and children and young people from black, Asian, minority ethnic and refugee groups and a particular lack of materials designed for lesbian, gay, bisexual and transgender young people. Limitations: Very little evidence was identified on costs and cost-effectiveness. Few studies showed an effect at the level of significance set for the review. Where it did exist, the effect size was small, except in respect of improved knowledge. The inability to calculate a response rate for the mapping survey, which used a snowballing approach, limits the ability to generalise from it. Conclusions: While it is appropriate to continue to deliver interventions to whole populations of children and young people, effectiveness appeared to be influenced by high-risk children and young people, who should be directed to additional support. Programmes also need to make provision to manage any resulting disclosures. Interventions appear to be context specific, and so those already being widely delivered in the UK and which are likely to be acceptable should be robustly tested. Funding: The National Institute for Health Research Public Health Research programme

Video browsing interfaces and applications: a review

We present a comprehensive review of the state of the art in video browsing and retrieval systems, with special emphasis on interfaces and applications. There has been a significant increase in activity (e.g., storage, retrieval, and sharing) employing video data in the past decade, both for personal and professional use. The ever-growing amount of video content available for human consumption and the inherent characteristics of video data—which, if presented in its raw format, is rather unwieldy and costly—have become driving forces for the development of more effective solutions to present video contents and allow rich user interaction. As a result, there are many contemporary research efforts toward developing better video browsing solutions, which we summarize. We review more than 40 different video browsing and retrieval interfaces and classify them into three groups: applications that use video-player-like interaction, video retrieval applications, and browsing solutions based on video surrogates. For each category, we present a summary of existing work, highlight the technical aspects of each solution, and compare them against each other