The exponential growth of user-generated content in online environment calls for techniques that can help to make sense of the content. Despite of a host of research on online consumer reviews, there is still a great demand for research to improve the techniques for feature extraction. To this end, we proposed extraction methods based on detailed categorization of review features. By taking int...

Online product reviews are increasingly important for consumer decisions, yet we still know little about how reviews are generated in the first place. In an effort to gather more reviews, many websites encourage user interactions such as allowing one user to subscribe to another. Do these interactions actually facilitate the generation of product reviews, and more important, what kind of review...

Tagging communities represent a subclass of a broader class of user-generated content-sharing online communities. In such communities users introduce and tag content for later use. Although recent studies advocate and attempt to harness social knowledge in this context by exploiting collaboration among users, little research has been done to quantify the current level of user collaboration in t...

In the paper we present the organization of the INEX 2009 interactive track. For the 2009 experiments the iTrack has gathered data on user search behavior in a collection consisting of book metadata taken from the online bookstore Amazon and the social cataloguing application LibraryThing. Thus the data are more structured than in previous years’ experiments, consisting of traditional bibliogra...

The goal of the INEX 2011 Books and Social Search Track is to evaluate approaches for supporting users in reading, searching, and navigating book metadata and full texts of digitized books. The investigation is focused around four tasks: 1) the Social Search for Best Books task aims at comparing traditional and user-generated book metadata for retrieval, 2) the Prove It task evaluates focused r...

In this chapter, the authors describe a co-design process and the implementation requirements of an interactive interior design service system. To gain design information for the system, they study two focus groups composed of designers, bloggers, and serious amateurs in the field of interior design – the estimated critical users of the forthcoming service system. The framework for the co-desig...

The development of the Web in the direction of user-generated content, information sharing, online collaboration and social media, have drastically increased the number of communication channels that can be used to interact with potential customers. In this demonstration we present the latest developments of our multi-channel communication solution, which enables touristic service providers, e....

Policy rules are often written in organizations by a team of people in different roles and technical backgrounds. While user-generated content and community-driven ontologies become common practices in the semantic environments, machine-processable user-generated policies have been underexplored, and tool support for such policy acquisition is practically non-existent. We defined the concept an...

The nature of the enterprise and the way people work is changing rapidly. The enabling power and competitive advantage of new social and participative technologies will benefit those that recognize the way work is changing. Web 2.0, the “second phase” of the Web, is the foundation of a new and improved Enterprise 2.0. Enterprise 2.0 provides, through a web of interconnected applications, servic...

We present and analyze several gaze-based graphical password schemes based on recall and cued-recall of grid points; eye-trackers are used to record user’s gazes, which can prevent shoulder-surfing and may be suitable for users with disabilities. Our 22-subject study observes that success rate and entry time for the grid-based schemes we consider are comparable to other gaze-based graphical pas...