We study the relationship between the distribution of data, on the one hand, and classifier performance, on the other, for non-parametric classifiers. It is shown that predictable factors such as the available amount of training data (relative to the dimensionality of the feature space), the spatial variability of the effective average distance between data samples, and the type and amount of n...

In this paper we describe the difficulties inherent in making accurate, reproducible measurements of message-passing performance. We describe some of the mistakes often made in attempting such measurements and the consequences of such mistakes. We describe mpptest, a suite of performance measurement programs developed at Argonne National Laboratory, that attempts to avoid such mistakes and obta...

Measurement of estradiol is useful in assisted reproduction, evaluation of infertility, menopause, and male feminization. The analytic performance of 8 estradiol immunoassays was evaluated. The imprecision and accuracy of the Access, ADVIA Centaur, ARCHITECT i2000, AutoDELFIA, Elecsys 2010, IMMULITE 2000, and Vitros ECi estradiol assays (see text for proprietary information) were evaluated by u...

This paper provides extensive evidence on portfolio characteristics of mutual funds and studies the relation between fund performance and the fund manager's investment strategy. The results show that neither momentum characteristics nor the valuation of stocks can explain differences in fund performance. However, the paper finds a negative firm-size effect that partly explains previous findings...

The primary objective of this paper is to study the driving patterns of the Tennessee DUI drivers, in order to understand alcohol-related crashes and fatalities in Tennessee. Data were obtained from the Tennessee Department of Highway Safety. Driving records were analyzed for drivers who received a citation for a driving violation in 1999, since they received their driving licenses. Out of a to...

Real-time distributed groupware often performs poorly when network conditions are not optimal. One approach to improving performance is to first look at the characteristics of the information being exchanged by the system, such as payload size and frequency. However, the diversity of tasks, implementations, and groups makes it is difficult to generalize about groupware characteristics. This pap...

This paper provides an overview of the characteristics of a phenothiazine-mylar dosimeter which can be used as an effective solar UVA exposure assessment tool. This dosimeter is sensitive to UVA wavelengths (315-400 nm); its performance has been characterized in a series of tests such as (a) UVA exposure response (dose-response), (b) temperature stability of the response, (c) impact of long ter...

Previous research at Heriot-Watt University has led to a better understanding of the performance characteristics of siphonic rainwater systems, with particular reference to the priming of such systems. This has resulted in the development of a numerical model capable of accurately simulating the priming phase of single outlet siphonic rainwater systems. However, the majority of installed system...

In traditional System-on-Chip design it is possible to know in advance the actual communication requirements, the application needs and all the components (modules) needed to realize the desired architecture. They can be understood a priori, at synthesis-time by the analysis of the application specification. For this reason, once all the components of the system have been defined, they will rem...