A Bayesian mixture model for term re-occurrence and burstiness

This paper proposes a model for term reoccurrence in a text collection based on the gaps between successive occurrences of a term. These gaps are modeled using a mixture of exponential distributions. Parameter estimation is based on a Bayesian framework that allows us to fit a flexible model. The model provides measures of a term’s re-occurrence rate and withindocument burstiness. The model works for all kinds of terms, be it rare content word, medium frequency term or frequent function word. A measure is proposed to account for the term’s importance based on its distribution pattern in the corpus

Towards Identifying and closing Gaps in Assurance of autonomous Road vehicleS - a collection of Technical Notes Part 1

This report provides an introduction and overview of the Technical Topic Notes (TTNs) produced in the Towards Identifying and closing Gaps in Assurance of autonomous Road vehicleS (Tigars) project. These notes aim to support the development and evaluation of autonomous vehicles. Part 1 addresses: Assurance-overview and issues, Resilience and Safety Requirements, Open Systems Perspective and Formal Verification and Static Analysis of ML Systems. Part 2: Simulation and Dynamic Testing, Defence in Depth and Diversity, Security-Informed Safety Analysis, Standards and Guidelines

Understanding the user - why, what and how?

Explains the need, importance, purposes and scope of user studies, discusses procedure for conducting sound user studies together with associated problems of research like selection of problem, formulation of hypothesis, design of study, sampling strategy, data collection methods, scaling techniques, pilot study, processing and analysis of data, testing of hypothesis, interpretation, drawing inferences, communication and dissemination of results and finally concludes by highlighting methodological flaws and gaps in user studies

First, Do Less Harm: Confronting the Inconvenient Problems of Patient Safety

[Excerpt] This book is an exploration of why patient safety is advancing at what seems to be an almost glacial pace, despite the often vast and determined efforts of health care workers and managers. A collection of essays from prominent researchers, scholars, and even patients, this book aims to identify some of the gaps in the patient safety movement, the disconnected dots that do not coalesce despite decades of hard work and billions of dollars. It also identifies concerns that have not been integrated into the patient safety discourse or agenda of more established groups

School to where? A literature review on economic outcomes of youth with Disabilities

This paper summarizes the recent empirical literature on post-secondary school outcomes of youth with disabilities. Our summary illustrates the variation in characteristics and outcomes that exist in several subpopulations generally defined as youth with disabilities. Unfortunately, a major limitation of this literature, particularly for special education students and SSI recipients, is a lack of information on recent outcomes. Specifically, there were no major data collection efforts, at least at the national level, to track these populations in the mid to late nineties. While upcoming data sources, such as the National Longitudinal Transition Survey2 (NLTS2) and National Survey of Children and Families (NSCF), should fill major gaps in existing knowledge, other data initiatives are necessary to ensure that policy makers continuously have current information. We suggest several types of survey and administrative data initiatives, as well as new research projects using current data, to address current gaps