-Bayes slightly outperformed C4.5 on average. We also show that in some cases, the performance of the C4.5 induction algorithm signi cantly improved if features were discretized in advance � in our experiments, the performance never signi cantly degraded, an interesting phenomenon considering the fact that C4

motivation in those around them. Most theories of motivation reflect these concerns by viewing motivation as a unitary phenomenon, one that varies from very little motivation to act to a great deal of it. Yet, even brief reflection suggests that motivation is hardly a unitary phenomenon. People have not only

reliability. It's intended for contexts in which geographic routing criteria are not applicable because a coordinate system is not available or the phenomenon of interest is not geographically correlated.

is to report a set of simple experiments that establish the existence of a robust and interesting phenomenon of memory. This phenomenon, called the gen-eration effect, is robust in that it manifests itself across a variety of testing proce-dures, encoding rules, and other situational changes. It is interesting

information, while Google Earth and other virtual globes are encouraging volunteers to develop interesting applications using their own data. I review this phenomenon, and examine associated issues: what drives people to do this, how accurate are the results, will they threaten individual privacy, and how can

of the phenomenon to discover the deeper ideological functions that emanate from the Tribe psychology. Post Script: The paper provides insights into some of the ramifications of personal financial planning arousing sufficient passion, interest and partisanship for members to define themselves to some extent as a

A body of data and theory has been developing within psychology which should be of interest to economists. Taken at face value the data are simply inconsistent with preference theory and have broad implications about research priorities within economics. The inconsistency is deeper than the mere

Random graph theory is used to examine the “small-world phenomenon”– any two strangers are connected through a short chain of mutual acquaintances. We will show that for certain families of random graphs with given expected degrees, the average distance is almost surely of order log n / log ˜ d

’s perceptions, thoughts, beliefs, and expectations, it was more than just the sum of such individual properties. It was a group level phenomenon. Recently, there seems to be a resurgence of interest in this notion as writers and researchers in such fields as business policy and strategy (e.g., Bonham,

Selfish routing is a classical mathematical model of how self-interested users might route traffic through a congested network. The outcome of selfish routing is generally inefficient, in that it fails to optimize natural objective functions. The price of anarchy is a quantitative measure