In order to explore the social organization of a medieval peasant community before the Hundred Years’ War, we propose the use of an adaptation of the well-known Kohonen Self Organizing Map to dissimilarity data. In this paper, the algorithm is used with a distance based on a kernel which allows the choice of a smoothing parameter to control the importance of local or global proximities.

“Peasant worker shortage” originated from coastal towns in Fujian in 2003. However, there are about 200,000,000 surplus labors, and about 5,000,000 new surplus labor. From an angle of economics, the author analyses the causes of this phenomenon, indicating that the problems mirrored by the shortage of farmer laborers will have negative influence upon the construction of a new type industrial st...