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...

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...

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....