This paper deals with two aspects of the application of ARTMAP neural networks for classification of satellite images obtained by remote sensing of the Earth. The first part contains an analysis of the influence of data representation and cluster determination method on classification accuracy. Three types of representation/determination are analyzed. Best results are obtained for Gaussian ARTM...

Background—Preoperative factors associated with increased mortality and worse outcome after tricuspid valve replacement in patients with severe tricuspid regurgitation are poorly understood. Methods and Results—We retrospectively analyzed 189 patients (37% men; age, 67.5 11.3 years) who underwent tricuspid valve replacement for severe tricuspid regurgitation. Operative mortality rate was 10%, a...

The solution of most commercial rule-based expert systems consists of two components –the conclusion(s) reached and a calculated measure of belief in the conclusion(s), expressed as a single number. In non-deterministic domains, this number is often the most critical factor in analyzing the solution. However, as this paper reviews, a robust calculus for this number has yet to be documented, ind...

OBJECTIVE The correlation between high body mass index and outcomes after esophagectomy has not been systematically addressed. Some studies have shown that patients with a high body mass index had better overall survival and disease-free survival compared with those with a normal/low body mass index, whereas others have shown that the body mass index was not of prognostic value. METHODS Ninet...

BACKGROUND Knowledge of specific risk factors for incisional Surgical Site Infection (SSI) is essential to create a specific SSI risk stratification index for colorectal surgery patients. OBJECTIVE Identify factors increasing the risk of incisional SSI that lead to the development of a more efficient tool for predicting and comparing surgical site infection rates among surgeons and institutio...

There are situations which the tomographic exam is done on the affected hip or situations where the contralateral hip presents abnormalities that make it impossible to compare. In this study we aimed to evaluate a tomographic index that does not require comparison between the both hips. Twenty two patients with unilateral acetabular fracture dislocation with fracture of posterior wall were stud...

Stock price prediction is an important and challenging problem in stock market analysis. Existing prediction methods either exploit autocorrelation of stock price and its correlation with the supply and demand of stock, or explore predictive indictors exogenous to stock market. In this paper, using transaction record of stocks with identifier of traders, we introduce an index to characterize ma...