Refining Implicit Argument Annotation for UCCA

Predicate-argument structure analysis is a central component in meaning representations of text. The fact that some arguments are not explicitly mentioned in a sentence gives rise to ambiguity in language understanding, and renders it difficult for machines to interpret text correctly. However, only few resources represent implicit roles for NLU, and existing studies in NLP only make coarse distinctions between categories of arguments omitted from linguistic form. This paper proposes a typology for fine-grained implicit argument annotation on top of Universal Conceptual Cognitive Annotation's foundational layer. The proposed implicit argument categorisation is driven by theories of implicit role interpretation and consists of six types: Deictic, Generic, Genre-based, Type-identifiable, Non-specific, and Iterated-set. We exemplify our design by revisiting part of the UCCA EWT corpus, providing a new dataset annotated with the refinement layer, and making a comparative analysis with other schemes.Comment: DMR 202

Analyzing safety and fault tolerance using time Petri nets

The application of time Petri net modelling and analysis techniques to safety-critical real-time systems is explored and procedures described which allow analysis of safety, recoverability, and fault tolerance. These procedures can be used to help determine software requirements, to guide the use of fault detection and recovery procedures, to determine conditions which require immediate miti gating action to prevent accidents, etc. Thus it is possible to establish important properties duing the synthesis of the system and software design instead of using guesswork and costly a posteriori analysis

Management of Digital Video Broadcasting Services in Open Delivery Platforms

The future of Digital Video Broadcasting (DVB) is moving towards solutions offering an efficient way of carrying interactive IP multimedia services over digital terrestrial broadcasting networks to handheld terminals. One of the most promising technologies is Digital Video Broadcasting-Handheld (DVB-H), at present under standardisation. Services deployed via this type of DVB technologies should enjoy reliability comparable to TV services and high quality standards. However, the market at present does not provide effective and economical solutions for the deployment of such services over multi-domain IP networks, due to their high level of unreliability. This paper focuses on service management, service level agreement (SLA) and network performance requirements of DVB-H services. Experimental results are presented concerning QoS sensitivity to network performance of DVB-H services delivered over a multi-domain IP network. Moreover, a solution for efficient and cost effective service management via QoS monitoring and control and network SLA design is proposed. The solution gives DVB-H operators the possibility of fully managing service QoS without being tied to third party operators

Systems thinking and practice for action research

This chapter offers some grounding in systems thinking and practice for doing action research. There are different traditions within systems thinking and practice which, if appreciated, can become part of the repertoire for practice by action researchers. After exploring some of these lineages the differences between systemic and systematic thinking and practice are elucidated – these are the two adjectives that come from the word 'system', but they describe quite different understandings and practices. These differences are associated with epistemological awareness and distinguishing systemic action research from action research. Finally, some advantages for action research practice from engaging with systems thinking and practice are discussed

"Rewiring" Filterbanks for Local Fourier Analysis: Theory and Practice

This article describes a series of new results outlining equivalences between certain "rewirings" of filterbank system block diagrams, and the corresponding actions of convolution, modulation, and downsampling operators. This gives rise to a general framework of reverse-order and convolution subband structures in filterbank transforms, which we show to be well suited to the analysis of filterbank coefficients arising from subsampled or multiplexed signals. These results thus provide a means to understand time-localized aliasing and modulation properties of such signals and their subband representations--notions that are notably absent from the global viewpoint afforded by Fourier analysis. The utility of filterbank rewirings is demonstrated by the closed-form analysis of signals subject to degradations such as missing data, spatially or temporally multiplexed data acquisition, or signal-dependent noise, such as are often encountered in practical signal processing applications

Pay for Success: The First Generation - A Comparative Analysis of the First 10 Pay for Success Projects in the United States

Nonprofit Finance Fund (NFF) has released a comprehensive free report on the first 10 Pay for Success (PFS) projects that have launched in the United States. This report details how and why communities have applied this new approach to address critical social issues including early childhood education, homelessness, and criminal justice and recidivism. Pay for Success is an approach to contracting that ties payment for service delivery to the achievement of measurable outcomes. In the U.S., all of the current PFS projects have been accompanied by a form of social innovation financing, often referred to as a Social Impact Bond, in which investors provide upfront financing for the delivery of services and are repaid only if the services achieve a pre-agreed upon set of positive outcomes. The report includes a series of comparative graphics and observations on the market's development to-date. It examines project goals and project design; the partners and stakeholders involved; the underlying data, evidence, and evaluation plans; the governance and investment structures, including repayment terms and investor profiles; and project costs. To create the report, NFF drew on experience as a PFS educator, partner, and investor and conducted research using project documentation, publically available information, and stakeholder interviews. Over the past five years, NFF has conducted more than 200 PFS trainings, presentations, webinars, workshops, and convenings across the country for service providers, governments, and investors. NFF also manages the Pay for Success Learning Hub, www.payforsuccess.org, the leading national repository for education and information on Pay for Success. NFF's work on the report was made possible with the support of the Corporation for National and Community Service's Social Innovation Fund (SIF)

Connectivity, confidentiality and confidence: Key issues in the provision of online pro bono activities

The provision of pro bono activities for law students has become an established feature of the undergraduate legal education landscape in Law Schools in the United Kingdom (“UK”) and beyond, providing the experiential elements of clinical legal education programmes. Pro bono activities conducted online, or utilising and enhanced by technologies in other ways (for example, through the development of a mobile phone application providing legal guidance), are increasingly becoming a part of this offering, reflecting wider shifts within legal practice and society and an increasing recognition of the importance of digital literacy skills. This paper will situate these forms of online and technologically-enhanced pro bono activities both within the wider context of contemporary clinical legal education and also as a part of broader professional and societal shifts. It will explore a variety of innovative approaches being taken internationally, including work done by The Open University’s Open Justice Centre in the UK, before moving on to focus on a number of key challenges and opportunities which may arise through the increasing provision of these new forms of pro bono activities by Law Schools. These include the potential and pitfalls of the technology involved, issues with confidentiality (particularly in the context of online legal advice) and the issue of how to foster trust in the online environment. The paper will conclude with a number of suggestions for areas requiring further research and discussion to enable contemporary clinicians to fully utilise the potential of online and technologically-enhanced pro bono activities