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Case Study: An Evaluation of Detection Dog Generalization to a Large Quantity of an Unknown Explosive in the Field
Animals ( IF 3 ) Pub Date : 2021-05-08 , DOI: 10.3390/ani11051341
Edgar O. Aviles-Rosa , Gordon McGuinness , Nathaniel J. Hall

Two explosive detection dogs were deployed to search a suspicious bag, and failed to detect 13 kg of explosive within. The aim of this research was to further evaluate this incident. First, dog teams (N = 7) searched four bags in a similar scenario. One bag contained the same 13 kg of explosive, two bags were blanks, and the other contained the training sample that the agency routinely used for training. All dogs detected the training sample, but most (5/7) did not alert to the 13 kg sample. Subsequently, dogs received two trials in a line up with a 30 g subsample of the explosive to evaluate whether they could generalize to a smaller quantity. Most dogs (6/7) alerted to the subsample at least once. Finally, dogs were trained with the 30 g subsample and later tested with the 13 kg sample. Only three dogs spontaneously generalized to the large sample after training with the small subsample. Dogs’ alert rate to the 13 kg sample was improved with training in subsequent trials with the 13 kg sample. This result indicates that explosive detection dogs may not generalize to a target odor at a significantly higher quantity relative to the one used in training, highlighting the importance of conducting such training.

中文翻译:

案例研究:对大量野外未知炸药的探测犬归纳性评估

部署了两个爆炸物侦查犬以搜寻可疑包,但未能在其中发现13千克爆炸物。这项研究的目的是进一步评估此事件。一,狗队(N= 7)在类似的情况下搜索了四个袋子。一个袋子里装着同样的13公斤炸药,两个袋子里是空包,另一个袋子里装有该机构通常用来训练的训练样品。所有的狗都检测到了训练样本,但是大多数(5/7)没有警惕13公斤样本。随后,犬接受了两次试验,每次试验都含有30克爆炸物子样品,以评估它们是否可以泛化成更少量。大多数狗(6/7)至少一次通知子样本。最后,用30 g的子样本训练狗,然后使用13 kg的样本进行测试。在训练小样本后,只有三只狗自发地推广到大样本。通过在随后的13公斤样本试验中进行训练,可以提高狗对13公斤样本的警觉率。
更新日期:2021-05-08
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