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Online Harassment is one of the most serious problems in social media. To address it requires understanding the forms harassment takes, how it impacts the targets, who harasses, and how technology that stands between users and social media can stop harassers and protect users. The field of Human-Computer Interaction provides a unique set of tools to address this challenge. This book brings together experts in theory, socio-technical systems, network analysis, text analysis, and machine learning to present a broad set of analyses and applications that improve our understanding of the harassment problem and how to address it. This book tackles the problem of harassment by addressing it in three major domains. First, chapters explore how harassment manifests, including extensive analysis of the Gamer Gate incident, stylistic features of different types of harassment, how gender differences affect misogynistic harassment. Then, we look at the results of harassment, including how it drives people offline and the impacts it has on targets. Finally, we address techniques for mitigating harassment, both through automated detection and filtering and interface options that users control. Together, many branches of HCI come together to provide a comprehensive look at the phenomenon of online harassment and to advance the field toward effective human-oriented solutions.

Mass communications --- Computer science --- Computer architecture. Operating systems --- Computer. Automation --- Mathematical linguistics --- spraaktechnologie --- sociale media --- machine learning --- computers --- informatica --- computerkunde

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As open, distributed systems like the Web continue to grow, and more and more content created by users becomes available, the question of whom and what can be trusted becomes increasingly important. This book looks at one solution - social trust relationships - and examines the challenging research problems raised by computing with social trust. In bringing together important research in computing social trust from both computer science and related disciplines, this book provides an invaluable overview of the area. Divided into three parts, the first - Models of Social Trust - addresses theory, behaviour and trust management, analysing how trust is developed, the dynamics of trust relationships, and systems for trust management. Part Two - Propagation of Trust - describes algorithms and methods for computing trust in social contexts. Social networks, profile similarity, and participation in online communities are all sources from which trust can be computed. The final part - Applications of Trust - contains applications such as recommender systems, website access control, and email filtering, where trust can improve functionality. With contributions from leading researchers in the area of social trust, this book will be welcomed by researchers and graduate students in computer science and information systems, as well as those working in related disciplines where trust may be an issue (such as communications and psychology).

Artificial intelligence. Robotics. Simulation. Graphics --- Computer. Automation --- informatica --- maatschappij --- KI (kunstmatige intelligentie) --- robots

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TheWorld-WideWeb continues to growand newtechnologies,modes ofinter- tions, and applications are being developed. Building on this growth, Semantic Web technologies aim at providing a shared semantic information space, cha- ing qualitatively our experiences on the Web. As Semantic Web technologies mature and permeate more and more application areas, new research challenges are coming to the fore and some unsolved ones are becoming more acute. These issues include creating and managing Semantic Web content, making Sem- tic Web applications robust and scalable, organizing and integrating infor- tion from di?erent sources for novel uses, making semantics explicit in order to improve our overallexperience with information technologies, and thus enabling us to use the wealth of information that is currently available in digital form for addressing our everyday tasks. These and other challenges brought several hundred of researchers, devel- ers,governmentworkers,venturecapitalists,students,anduserstoBusan,Korea fortheSixthInternationalSemanticWebConferencewhichwasheldjointlywith the 2nd Asian Semantic Web Conference (ISWC 2007 + ASWC 2007). We are excited to o?er this volume with the main proceedings of ISWC 2007 + ASWC 2007 to the growingcommunity of researchersand practitioners of the Semantic Web. The tremendous response to our Call for Papers from a truly international community of researchers and practitioners from 30 countries, the careful nature of the review process, and the breadth and scope of the papers ?nally selected for inclusion in this volume all speak to the quality of the c- ference and to the contributions made by the papers in these proceedings.

Computer science --- Computer architecture. Operating systems --- Information systems --- Artificial intelligence. Robotics. Simulation. Graphics --- Computer. Automation --- ICT (informatie- en communicatietechnieken) --- multimedia --- programmeren (informatica) --- informatiesystemen --- database management --- computernetwerken --- robots