Abstract: In an apparatus and method for computerized design of fuzzy rules from training data vectors, a membership function type is selected from a set of predetermined membership function types, and membership values for the training data vectors and center of gravity values for the membership functions are determined in alternation in an iterative method for all training data vectors and for each membership function. When an abort criterion is met, then the most recently determined membership functions, described by the center of gravity values, are employed as rules.

Abstract: The method involves displaying at least three different parameters of particle-related data in multiple two-parameter data fields on a screen for viewing by a user. A position variable cursor is applied to any two-parameter data field and a region of data events is created within the data field by the cursor. Data events in the created region are linked and corresponding data events, defined by all other parameter data fields displayed on the screen, are then located. This method includes visually differentiating the data events in the other data fields which correspond to the data events in the created region of the first data field. This differentiation permits the user to identify these same data events on all of the two-parameter data fields to thereby facilitate visual exploratory data analysis.