Quantitative Identification Criteria for Secondary Toolmarks on Bullets Shot from AK-74
The paper compares the effectiveness of identifying low-count land marking patterns using the method of consecutively matching striations (CMS method) and the probabilistic method. The study was conducted on 48 pairs of matching toolmarks and 66 pairs of non-matching toolmarks. The criterion for ass...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | Russian |
| Published: |
Ministry of Justice of the Russian Federation, Russian Federal Centre of Forensic Science
2019-10-01
|
| Series: | Теория и практика судебной экспертизы |
| Subjects: | |
| Online Access: | https://www.tipse.ru/jour/article/view/495 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850029347687104512 |
|---|---|
| author | V. A. Fedorenko |
| author_facet | V. A. Fedorenko |
| author_sort | V. A. Fedorenko |
| collection | DOAJ |
| description | The paper compares the effectiveness of identifying low-count land marking patterns using the method of consecutively matching striations (CMS method) and the probabilistic method. The study was conducted on 48 pairs of matching toolmarks and 66 pairs of non-matching toolmarks. The criterion for assigning a positive match that was determined using the CMS method yielded one false positive in the analysis of known non-matches. Approximately 50% of matching pairs of toolmarks identified by the expert were omitted in the analysis. The application of the probabilistic method showed that out of the same 16 pairs of matches identified by the expert, no pair will be missed if the probability value of 5 х 10-3 is taken as the identification criterion. No false positive statement will be made either. Thus it is shown that the probabilistic method of toolmark identification is more effective. It was demonstrated to be practically impossible to justify elimination when comparing low-count toolmark patterns. |
| format | Article |
| id | doaj-art-cc91d1ac44ea499dad4e5ea66df759e8 |
| institution | DOAJ |
| issn | 1819-2785 2587-7275 |
| language | Russian |
| publishDate | 2019-10-01 |
| publisher | Ministry of Justice of the Russian Federation, Russian Federal Centre of Forensic Science |
| record_format | Article |
| series | Теория и практика судебной экспертизы |
| spelling | doaj-art-cc91d1ac44ea499dad4e5ea66df759e82025-08-20T02:59:32ZrusMinistry of Justice of the Russian Federation, Russian Federal Centre of Forensic ScienceТеория и практика судебной экспертизы1819-27852587-72752019-10-01143546210.30764/1819-2785-2019-14-3-54-62475Quantitative Identification Criteria for Secondary Toolmarks on Bullets Shot from AK-74V. A. Fedorenko0Saratov State UniversityThe paper compares the effectiveness of identifying low-count land marking patterns using the method of consecutively matching striations (CMS method) and the probabilistic method. The study was conducted on 48 pairs of matching toolmarks and 66 pairs of non-matching toolmarks. The criterion for assigning a positive match that was determined using the CMS method yielded one false positive in the analysis of known non-matches. Approximately 50% of matching pairs of toolmarks identified by the expert were omitted in the analysis. The application of the probabilistic method showed that out of the same 16 pairs of matches identified by the expert, no pair will be missed if the probability value of 5 х 10-3 is taken as the identification criterion. No false positive statement will be made either. Thus it is shown that the probabilistic method of toolmark identification is more effective. It was demonstrated to be practically impossible to justify elimination when comparing low-count toolmark patterns.https://www.tipse.ru/jour/article/view/495land markingsconsecutively matching striationspoisson distributionfirearms identificationforensic ballisticsmatching toolmarks |
| spellingShingle | V. A. Fedorenko Quantitative Identification Criteria for Secondary Toolmarks on Bullets Shot from AK-74 Теория и практика судебной экспертизы land markings consecutively matching striations poisson distribution firearms identification forensic ballistics matching toolmarks |
| title | Quantitative Identification Criteria for Secondary Toolmarks on Bullets Shot from AK-74 |
| title_full | Quantitative Identification Criteria for Secondary Toolmarks on Bullets Shot from AK-74 |
| title_fullStr | Quantitative Identification Criteria for Secondary Toolmarks on Bullets Shot from AK-74 |
| title_full_unstemmed | Quantitative Identification Criteria for Secondary Toolmarks on Bullets Shot from AK-74 |
| title_short | Quantitative Identification Criteria for Secondary Toolmarks on Bullets Shot from AK-74 |
| title_sort | quantitative identification criteria for secondary toolmarks on bullets shot from ak 74 |
| topic | land markings consecutively matching striations poisson distribution firearms identification forensic ballistics matching toolmarks |
| url | https://www.tipse.ru/jour/article/view/495 |
| work_keys_str_mv | AT vafedorenko quantitativeidentificationcriteriaforsecondarytoolmarksonbulletsshotfromak74 |