User generated content (UGC) is an important source of information to consumers, yet prior research has not fully explored how certain aspects of the content, specifically the tone, perception of quality and source credibility influence attitudes and intentions to buy. This study investigates how the tone of UGC influences perceived content quality, source credibility, attitudes and consumer in...

Knowledge-sharing online social networks are becoming increasingly pervasive and popular. However, consumption of user generated content in these networks has not been studied extensively despite its significant influence on many social network behaviors. In this work, we study data gathered from digg.com and ireport.com for studying the creation and consumption behavior. We build on our prior ...

Conventional spread spectrum communication methods essentially map a discrete symbol from an alphabet to a length-N real valued sequence, which represents a point in the N-dimensional signal constellation. The real valued sequence is in turn transmitted over a communications channel. However, communication schemes for the purpose of multimedia steganography (or data hiding) have to transmit the...

Users’ preference such as rating only provides uni-dimension information, but reasons behind users’ preference may be related to various aspects of an item, such as the types, certain attributes. By observing user-generated review always provides such rich information, we proposed an item representation based on review data. This approach supports semantic operation, which could potentially ena...

When JPEG images are used as cover objects for data hiding, many existing techniques require the images to be fully or partially decompressed before embedding. This makes practical application of these methods limited. In this paper, we investigate ways to hide data in the compressed domain directly and efficiently, such that both the original content and the embedded message can be recovered a...

We have explored design opportunities to enrich the tourism experience of people at the Georgia Aquarium by providing a context of photos and by motivating people to be active creators of content to share their experiences with others. We designed a system named RevisiTour to enable visitors to reorganize photos taken from tour sites and share the photos with others. A visitor’s path and timest...

Online communities’ viability and success are dependent on current members’ active participation and content contribution, as well as on the sustainable community registration of new members. Based on the member-life cycle perspective, this study attempted to discover mechanisms that might be employed to increase new members’ community participation. This study focused on user-generated content...

The notion of authorship is a core element in antipiracy campaigns accompanying an emerging copyright regime, worldwide. These campaigns are built on discourses that aim to 'problematize' the issues of 'legality' of content downloading practices, 'protection' for content creators and the alleged damage caused to creators' livelihood by piracy. Under these tensions, fandom both subverts such dis...

Previous research on quality estimation for machine translation has demonstrated the possibility of predicting the translation quality of well-formed data. We present a first study on estimating the translation quality of user-generated content. Our dataset contains English technical forum comments which were translated into French by three automatic systems. These translations were rated in te...

While online communities have become increasingly important over the years, the moderation of user-generated content is still performed mostly manually. Automating this task is an important step in reducing the financial cost associated with moderation, but the majority of automated approaches strictly based on message content are highly vulnerable to intentional obfuscation. In this paper, we ...