指纹纹型出现概率的统计分析

Statistical analysis on the Occurrence Probability of Fingerprint Types

目的:通过对二万余人的指纹五类纹型手工统计、4,000余万人的指纹纹型计算机统计,分析指纹的五类纹型出现概率。方法:选取2007年、2013年、2014年全国被比中人员二万余人,分别以地区、省份、一定数量人数为单元统计五类纹型出现概率;选取广东、青海、河南、江苏、黑龙江五省利用AFIS进行指纹的纹型统计,经权重后计算出指纹纹型出现概率。结果:指纹的五类纹型出现概率具有稳定的规律。结论:为指纹鉴定结论的概率化表述提供依据。

Objective： To analyze the occurrence probability of five-type fingerprints through the manual statistic on the five-type fingerprints of 20 thousand people and the computer statistic on fingerprint types of 40 million people. Methods： Counting the occurrence probability of five-type fingerprints according to the regions, provinces and populations of 20 thousand people from nationwide in 2007, 2013 and 2014. By the AFIS statistic of fingerprint types from Guangdong, Qinghai, Henan, Jiangsu and Heilongjiang Provinces, after weighting, to count the occurrence probability of fingerprint types. Results： There is a stable regulation for the occurrence probability of five-type fingerprints.Conclusion： Provide evidence for the statistic analysis of fingerprint identification conclusion.