Random graph theory has become a major modeling tool to study complex systems. In this paper we apply random graph theory to analyze bipartite consumer-product graphs that represent sales transactions to better understand consumer purchase behavior in e-commerce settings. Based on two real-world...

Beginning in 2005, the SEC mandated firms to include a “risk factor” section in their Form 10-K to discuss “the most significant factors that make the company speculative or risky.” This suggests that regulators believe that investors benefit from disclosures about firm risk and...

Knowledge management is essential to modern organizations. Due to the information overload problem, mangers are facing critical challenges in utilizing the data in the organizations. Although several automated tools have been applied, previous applications often deem knowledge items independent...

Artificial Intelligence Lab, Department of MIS, University of Arizona

Recommender systems are being increasingly adopted in various e-commerce applications. A wide range of recommendation approaches have been developed to analyze past consumer-product interactions, consumer attributes, and product attributes to predict customer preferences and future transactions....

In information facilities such as libraries, finding documents that are relevant to a user query isdifficult because of the indeterminism involved in the process by which documents are indexed,and the latitude users have in choosing terms to express a query on a particular topic....

In this paper, we report results of an investigation where thirty subjects were observedperforming subject-based search in an online catalog system. The observationshave revealed a range of misconceptions users have when performing subject-basedsearch. We have developed a taxonomy that...

Enabled by Web 2.0 technologies, online social media in the forms of discussion forums, message boards, and blogs has become a prevalent channe lof communication for consumers and businesses. Online social media allows consumers to share their product opinions and experience at an unprecedented...

Electronic health record (EHR) system holds great promise in transforming healthcare. Existing empirical literature typically focused on its adoption, and found mixed evidence on whether EHR improves care. The federal initiative for meaningful use (MU) of EHR aims to maximize the potential of...