欺骗检测:使用机器学习分析911电话
Patrick M Markey1, Jennie Dapice1, Brooke Berry1
1Villanova University, Villanova, PA, USA.
Personality & social psychology bulletin
|November 7, 2024
概括
机器学习可以检测911通话中的欺骗行为,报告杀人或失踪人员. 随机森林模型实现了68.2%的准确性,识别了虚假指控的关键行为线索.
科学领域:
- 法医心理学 法医心理学
- 计算机犯罪学 计算机犯罪学
- 人工智能在执法部门中的应用
背景情况:
- 在紧急呼叫中,区分虚假指控与真实的报道对于资源分配和正义至关重要.
- 之前用于在911电话中检测欺骗的方法在准确性和可扩展性方面存在局限性.
- 机器学习为分析呼叫者交互中的复杂行为模式提供了一种新的方法.
研究的目的:
- 评估机器学习的有效性,特别是随机森林模型,在检测911电话中的欺骗.
- 识别特定的行为线索,区分虚假指控呼叫者 (FAC) 和真实报告呼叫者 (TRC).
- 评估模型在不同类型的关键事件报告 (谋杀案与失踪人员) 中的性能.
主要方法:
- 编制了210个911电话的数据集,包括相同数量的FAC和TRC.
- 独立的编程人员,对欺骗状态视而不见,分析了86个不同的行为线索的呼叫.
- 一个随机森林模型与k倍交叉验证和重复采样被用于分类.
主要成果:
- 随机森林模型在检测所有911电话中的欺骗方面取得了68.2%的整体准确性.
- 性能因报告类型而异:杀人报告准确率为71.2%,失踪报告准确率为61.4%.
- 关键的歧视性线索包括"责怪他人"",自我戏剧化"和"不确定和不安全".
结论:
- 机器学习提供了一种可行的工具,可以在紧急911呼叫中增强欺骗检测.
- 已识别的行为线索为培训呼叫接收者和调查人员提供了宝贵的见解.
- 进一步的研究可以改进模型,以提高关键事件欺骗检测的准确性.
相关概念视频
01:18False Memories
72
False memories represent a cognitive distortion in which individuals recall events that did not happen, or remember them in an altered form. This phenomenon highlights the brain's constructive nature in processing and recalling memories, emphasizing that memory is not a perfect representation of past events but rather a dynamic reconstruction influenced by various factors.
One primary source of false memories is misattribution, where individuals incorrectly associate external information...
One primary source of false memories is misattribution, where individuals incorrectly associate external information...
72
01:18Steps in Outbreak Investigation
107
In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
107
01:22Eyewitness Memory
94
Eyewitness memory refers to the recollection of events by someone who has directly witnessed them, often serving as critical evidence in legal settings. This type of memory is commonly used in criminal cases where a witness describes details like a suspect's appearance, clothing, or behavior during a crime. However, despite its perceived reliability, eyewitness memory is prone to significant errors.
One such error is memory distortion, which occurs because human memory does not function...
One such error is memory distortion, which occurs because human memory does not function...
94