Comparison of Support Vector Machine and Back Propagation Neural Network in Evaluating the Enterprise Financial Distress

Recently, applying the novel data mining techniques for evaluating enterprise financial distress has received much research alternation. Support Vector Machine (SVM) and back propagation neural (BPN) network has been applied successfully in many areas with excellent generalization results, such as rule extraction, classification and evaluation. In this paper, a model based on SVM with Gaussian RBF kernel is proposed here for enterprise financial distress evaluation. BPN network is considered one of the simplest and are most general methods used for supervised training of multilayered neural network. The comparative results show that through the difference between the performance measures is marginal; SVM gives higher precision and lower error rates.Comment: 13 pages, 1 figur

How does race operate among Asian Americans in the labor market? : Occupational segregation and different rewards by occupation among native-born Chinese American and Japanese American male workers

The effect of race in the U.S. labor market has long been controversial. One posits that racial effects have been diminished since the civil rights movement of the 1960s (Alba & Nee, 2003; Sakamoto, Wu, & Tzeng, 2000; Wilson, 1980). Even if some disparities in labor-market outcomes among race groups are found, advocates of this declining significance of race thesis do not attribute these disparities to racial discrimination. They, instead, understand the racial gaps as a result of class composition of racial minority groups, classes represented by larger proportions of the working-class population (Wilson, 1980, 1997) as well as unskilled-immigrant workers (Borjas, 1994)

New Type of Vector Gauge Theory from Noncommutative Geometry

Using the formalism of noncommutative geometric gauge theory based on the superconnection concept, we construct a new type of vector gauge theory possessing a shift-like symmetry and the usual gauge symmetry. The new shift-like symmetry is due to the matrix derivative of the noncommutative geometric gauge theory, and this gives rise to a mass term for the vector field without introducing the Higgs field. This construction becomes possible by using a constant one form even matrix for the matrix derivative, for which only constant zero form odd matrices have been used so far. The fermionic action in this formalism is also constructed and discussed.Comment: 12 pages, LaTeX file, to appear in Phys. Lett.