Classification is a data mining technique which is utilized to predict the future by using available data and aims to discover hidden relationships between variables and classes. Since the cost component is crucial in most real life classification problems and most traditional classification methods work for the purpose of correct classification, developing cost-sensitive classifiers which mini...

In this article, we are presenting a model for optimizing the selection of cost drivers in activity-based costing such that the optimal set of cost drivers will minimize the sum of the absolute product unit price deviations and will keep the budget under the intended amount utilizing a quasi-Knapsack structure. Comparative analysis from two benchmark problems showed the effectiveness of the pro...

In this paper, we argue that study of the effect of financial development and shocks on aggregate growth volatility will not be informative because they affect growth volatility through its different components. Financial development affects only the business cycle component of volatility and therefore, the effect on total volatility is dependent on its share in total volatility. On the contrar...

For digraphs G and H, a homomorphism of G to H is a mapping f : V (G)→V (H) such that uv ∈ A(G) implies f(u)f(v) ∈ A(H). If, moreover, each vertex u ∈ V (G) is associated with costs ci(u), i ∈ V (H), then the cost of a homomorphism f is ∑ u∈V (G) cf(u)(u). For each fixed digraph H, the minimum cost homomorphism problem for H, denoted MinHOM(H), can be formulated as follows: Given an input digra...

Collecting large labeled data sets is a laborious and expensive task, whose scaling up requires division of the labeling workload between many teachers. When the number of classes is large, miscorrespondences between the labels given by the different teachers are likely to occur, which, in the extreme case, may reach total inconsistency. In this paper we describe how globally consistent labels ...

In this research, we scrutinize the affect of ownership structure on company performance. The relationship between ownership structure and performance has always been the area under discussion in the literature of corporate finance. The discussion on this area was started with the thesis of Berle and Means (1932). They argued that defuse ownership is inversely correlated with performance of a c...

Coal has been mined in the United States since colonial times and coal mining has always been a dangerous occupation. Despite the dangers involved in coal mining, coal is essential to the functioning of our society. Coal provides energy for products, businesses, and homes. Not only is coal mining a dangerous occupation, but, like many other industries, coal mining has also been referred to as a...

Aerosol effects on condensed water and precipitation in a tropical cloud system driven by deep convective clouds are investigated for two-dimensional simulations of 2-day duration. Although an assumed 10-fold increase in aerosol concentration results in a similar temporal evolution of mean precipitation and a small (9 %) difference in cumulative precipitation between the highand low-aerosol cas...

Data center providers seek to minimize their total cost of ownership (TCO), while power consumption has become a social concern. We present formulations to minimize server energy consumption and server cost under three different data center server setups (homogeneous, heterogeneous, and hybrid hetero-homogeneous clusters) with dynamic temporal workload. Our studies show that the homogeneous mod...

This paper considers the emerging application service provider (ASP) industry which represents the third wave in global IT outsourcing (Currie 2000a). This is fundamentally different from first wave, traditional service bureau outsourcing, and second wave, enterprise system outsourcing. ASPs offer a new business model in the form of application outsourcing (AO), enabling large and midsize custo...