User generated content is being recognized as part of the value proposition of e-commerce organizations. To make available fresh content on topics with existing contributions and first-time content on topics with little or no existing content, one needs to understand why individuals contribute early or late. Drawing upon the cognitive model of helping, this study develops and tests three hypoth...

There are a growing number of popular web sites where users submit and review instructions for completing tasks as varied as building a table and baking a pie. In addition to providing their subjective evaluation, reviewers often provide actionable refinements. These refinements clarify, correct, improve, or provide alternatives to the original instructions. However, identifying and reading all...

The Latent Dirichlet Allocation topic model of Blei, Ng, & Jordan (2003) is well-established as an effective approach to recovering meaningful topics of conversation from a set of documents. However, a useful analysis of user-generated content is concerned not only with the recovery of topics from a static data set, but with the evolution of topics over time. We employ a compound topic model (C...

Analyzing commonalities and variabilities among products of a product line is an essential activity for product line asset development. A feature-oriented approach to commonality and variability analysis (called feature modeling) has been used extensively for product line engineering. Feature modeling mainly focuses on identifying commonalities and variabilities among products of a product line...

Online social networks provide a unique opportunity to access and analyze the reactions of people as real-world events unfold. The quality of any analysis task, however, depends on the appropriateness and quality of the collected data. Hence, given the spontaneous nature of user-generated content, as well as the high speed and large volume of data, it is important to carefully define a data-col...

Currently there is no ITS application tailored to the need of mobile users. This paper provides a pioneering work in mobile ITS which intents to address the competency framework of a mobile ITS. The competency framework includes the mobile device identification, users device preference adaptation, content adaptation, and user model adaptation.

The information available today on web is tremendous and comes with greater challenges. Content extraction identifies the main content and removes the clutter from web pages. The main problem in extracting the content from the web page is the newer architecture of web pages and the diversity in the structure of web pages. Optimized content extraction from HTML documents using collective approac...

Collective matrix factorization (CMF) is a popular technique to improve the overall factorization quality of multiple matrices presuming they share the same latent factor. However, it suffers from performance degeneration when this assumption fails, an effect called negative transfer (n.t.). Although the effect is widely admitted, its theoretical nature remains a mystery to date. This paper pre...

Intel Corporation set itself a goal to reduce its global-warming greenhouse gas footprint by 20% by 2012 from 2007 levels. Through the use of sustainable IT, the Intel IT organization is recognized as a significant contributor to the company’s sustainability strategy by transforming its IT operations and overall Intel operations. This article describes how Intel has achieved IT sustainability b...

We investigate the dynamics of blog reading behavior of employees in an enterprise blogosphere. A dynamic model is developed and calibrated using longitudinal data from a Fortune 1000 IT services firm. We identify a variety-seeking behavior of blog readers where they frequently switch from reading on one set of topics to another dynamically. Our results indicate that this switching behavior is ...