2006 年 14 巻 1 号 p. 5-9
Instead of personal identification by looking his picture or by hearing the person's voice, we want to do it by computer. We have to find the same type of variable for each person in MT system. Each person must have enough database for his identification. How to read handwritten letter is also an identification problem. As there are many person and many letters, it is needed to find a much simple method than calculating a pattern distance. The method stated in this chapter uses standard distance of unit space member to check whether this belongs to this unit by that standard deviation. It looks like the control chart introduced by W.Shewhart. However the method stated here is quite different from the control chart method. Because there are many members.