Abstract: A system provides definitions of network states, and identifies a cause for the anomaly upon detection. A traffic measuring portion (characteristic quantity generating portion) counts the number of packets/time slot classified by traffic type with respect to network traffic, generating a characteristic quantity; a memory portion stores information about the characteristic quantity; a portion calculates correlation coefficients between each pair of characteristic quantities classified by traffic type; a portion generates a histogram from correlation coefficients; a portion for determining the severity of an anomaly based on the histogram; a portion evaluates the similarity of an anomaly of interest to a reference anomaly using the occurrence probabilities of correlation coefficients; and a portion assigns a color to each pixel according to its occurrence probability value, generating an n×n picture.

Abstract: A system provides definitions of network states, and identifies a cause for the anomaly upon detection. A traffic measuring portion (characteristic quantity generating portion) counts the number of packets/time slot classified by traffic type with respect to network traffic, generating a characteristic quantity; a memory portion stores information about the characteristic quantity; a portion calculates correlation coefficients between each pair of characteristic quantities classified by traffic type; a portion generates a histogram from correlation coefficients; a portion for determining the severity of an anomaly based on the histogram; a portion evaluates the similarity of an anomaly of interest to a reference anomaly using the occurrence probabilities of correlation coefficients; and a portion assigns a color to each pixel according to its occurrence probability value, generating an n×n picture.

Abstract: A method for manufacturing an embossed pattern in a base material comprises the steps of forming an embossed portion in the base material; cutting the embossed portion by using a cutter and a controller for three-dimensionally controlling the relative position between the cutter and the base material; and forming a predetermined embossed pattern in the base material. A method for manufacturing embossed patterns comprises the steps of holding processing data per each of the embossed patterns; and processing the embossed patterns by continuously connecting the processing data to each other sequentially. A method for manufacturing embossed patterns comprises the steps of dividing processing data of the patterns into left and right sections with respect to each of the patterns to process the patterns left and right; providing the same number of upper and lower processing lines with respect to the patterns; and continuously processing portions between the patterns.