This document summarizes a presentation on mathematical modeling using self-organizing maps (SOM) and its application to stock price prediction. It introduces SOM as an unsupervised neural network that can reduce dimensions and display similarities in data. The presentation describes how SOM works through competitive learning and updates node weights. It then discusses how SOM can be used for modeling, prediction, regional data analysis, and more. As an example application, it summarizes a study that used a hybrid SOM-multilayer perceptron model to more accurately predict stock prices of Lucent Inc. over five years compared to SOM or backpropagation neural networks alone. The conclusion states that techniques like SOM can enhance modeling and that collaborating