Публикации с тэгом "Item response theory"

СТАТЬЯ Self Organizing Map (SOM)

Self-Organizing Map Overview A self-organizing map (SOM) or self-organizing feature map (SOFM) is a type of artificial neural network that is trained using unsupervised learning to produce a low-dimensional (typically two dimensional), discretized representation of the input space of the training samples, called a map. Self-organizing maps are different than other artificial neural networks in the sense that they use a neighborhood function to preserve the topological properties of the input spa...

СТАТЬЯ Association rules: apriori algorithm

Association Rules Overview From Wikipedia: In data mining, association rule mining is a popular and well researched method for discovering interesting relations between variables in large databases. Piatetsky-Shapiro describes analyzing and presenting strong rules discovered in databases using different measures of interestingness. Based on the concept of strong rules, Agrawal et al. introduced association rules for discovering regularities between products in large scale transaction data record...