Consumers’ purchase decisions are increasingly influenced by user-generated online reviews. Accordingly, there has been growing concern about the potential for posting deceptive opinion spam— fictitious reviews that have been deliberately written to sound authentic, to deceive the reader. In this paper, we explore generalized approaches for identifying online deceptive opinion spam based on a n...

In recent years, the growing popularity and active use of social media services on the web have resulted in massive amounts of user-generated data. With these data available, there is also an increasing interest in analyzing it and to extract information from it. Since social media analysis is concerned with investigating current events around the world, there is a strong emphasis on identifyin...

User generated content is a valuable resource voluntarily provided by a growing number of users. As online and classical businesses increasingly harness this resource the need for strategic handling of the users arises. In this paper, we seek for a model that allows applying prior research insights on user behaviour to user generated content. Therefore, we develop a strategic segmentation of us...

In this article I test a new graphical, interactive interface that captures both " best estimate " point‐estimates and probability distributions from non‐experts. As in the previous literature, respondents are overconfident. My innovation is to show that in contrast to the standard method of directly asking respondents to state their confidence, using my method, which induces the respondents to...

This paper aims to introduce a useful approach on the combined use of template based publishing tools (i.e. for blogs and wikis) and content personalization services. The approach considers that the original developers of web content have limited awareness on accessibility issues, and they are facilitated and guided by the editing interface. The publishing mechanism is responsible for storing w...

Using Web-based content management systems such as Blog, an end user can easily publish User Generated Content (UGC). Although publishing of UGCs is easy, controlling access to them is a difficult problem for end users. Currently, most of Blog sites offer no access control mechanism, and even when it is available to users, it is not sufficient to control users who do not have an account at the ...

This paper considers the creation and consumption of content on user generated content (UGC) platforms, e.g., reviews, articles, chat, videos, etc. On these platforms, users’ expectations regarding the participation of others on the site become germane to their own involvement levels. Accordingly, we develop a dynamic rational expectations equilibrium model of joint consumption and generation o...

The power of the Web revolution came with making everyone a publisher, rather than just a consumer of information. However, as the prevailing interfaces to the Web require a high degree of literacy and full-fledged computer access, much of the world’s population lacks the skills or resources needed to create online content. In this work, we aim to lower the barrier to sharing local information ...

Silent users often constitute a significant proportion of an online user-generated content system. In the context of social media such as Twitter, users can opt to be silent all or most of the time. They are often called the invisible participants or lurkers. As lurkers contribute little to the online content, existing analysis often overlooks their presence and voices. However, we argue that u...

As the amount of user-generated content (UGC) on websites such as YouTube have experienced explosive growth, the demand for searching for relevant content has expanded at a similar pace. Unfortunately the minimally-required production effort and decentralization of content make these searches problematic. In addition, most UGC search efforts rely on notoriously noisy usersupplied tags and comme...