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相关概念视频

Attribution Theory00:56

Attribution Theory

12.9K
Behavior is a product of both the situation (e.g., cultural influences, social roles, and the presence of bystanders) and of the person (e.g., personality characteristics). Subfields of psychology tend to focus on one influence or behavior over others. Situationism is the view that our behavior and actions are determined by our immediate environment and surroundings. In contrast, dispositionism holds that our behavior is determined by internal factors (Heider, 1958).
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Fundamental Attribution Error01:14

Fundamental Attribution Error

12.8K
According to some social psychologists, people tend to overemphasize internal factors as explanations—or attributions—for the behavior of other people. They tend to assume that the behavior of another person is a trait of that person, and to underestimate the power of the situation on the behavior of others. They tend to fail to recognize when the behavior of another is due to situational variables, and thus to the person’s state. This erroneous assumption is...
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Calibration Curves: Correlation Coefficient01:10

Calibration Curves: Correlation Coefficient

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In a linear calibration curve, there is a value called the calibration coefficient, denoted by 'r,' which measures the strength and the direction of association between two variables. The correlation coefficient value ranges from −1 to +1. A value of +1 indicates a perfect positive linear correlation, −1 denotes a perfect negative correlation, and 0 implies no correlation between the two variables. A positive correlation value establishes that as one variable increases, the...
1.6K
Ratio Level of Measurement00:54

Ratio Level of Measurement

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The way a set of data is measured is called its level of measurement. Correct statistical procedures depend on a researcher being familiar with levels of measurement. For analysis, data are classified into four levels of measurement—nominal, ordinal, interval, and ratio.
A set of data measured using the ratio scale takes care of the ratio problem and provides complete information. Ratio scale data are like interval scale data, except they have a zero point and ratios can be calculated....
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Force Classification01:22

Force Classification

1.2K
Forces play a crucial role in the study of physics and engineering. They are essential in describing the motion, behavior, and equilibrium of objects in the physical world. Forces can be classified based on their origin, type, and direction of action.
Contact and non-contact forces are two of the most widely used categories of forces. As the name suggests, contact forces require physical contact between two objects to act upon each other. Examples of contact forces include frictional,...
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Confidence Coefficient01:24

Confidence Coefficient

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The confidence coefficient is also known as the confidence level or degree of confidence. It is the percent expression for the probability, 1-α, that the confidence interval contains the true population parameter assuming that the confidence interval is obtained after sufficient unbiased sampling; for example, if the CL = 90%, then in 90 out of 100 samples the interval estimate will enclose the true population parameter. Here α is the area under the curve, distributed equally under...
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相关实验视频

Updated: Jun 18, 2025

Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm
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Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm

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通过使用概率比率方法对源摄像头归因的性能评估.

Pasquale Ferrara1, Rudolf Haraksim1, Laurent Beslay1

  • 1Joint Research Centre, European Commission, 21027 Ispra, Italy.

Journal of imaging
|July 31, 2024
PubMed
概括
此摘要是机器生成的。

这项研究将摄像头归因从难以实现的相似性得分转变为数字取证的可解释的概率比率. 这使得在使用源摄像头归因的法律案件中可以做出更明智的决定.

关键词:
法医证据评估法医证据的评估.可能性比率的概率.业绩表现表现的表现表现是什么视频来源归因视频来源归因

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Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
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A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
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相关实验视频

Last Updated: Jun 18, 2025

Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm
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Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
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A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
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科学领域:

  • 数字法医学数字法医学
  • 图像分析 图像分析
  • 计算机视觉 计算机视觉

背景情况:

  • 目前的源摄像头归因方法依赖于缺乏概率解释的相似度得分.
  • 像ROC曲线这样的标准评估指标在法医调查中具有有限的可用性.
  • 这阻碍了事实检查人员的知情决策.

研究的目的:

  • 为了证明从相似度得分向源摄像头归因的概率比率的过渡.
  • 增强数字证据评估的概率解释和法医可用性.
  • 将发现纳入现有的法医案例工作中.

主要方法:

  • 概率比率是从照片响应不一致性 (PRNU) 源归因相似性得分计算出来的.
  • 实验比较了数字图像和视频的不同策略,考虑了它们的独特特征.
  • 结果按照验证法医概率方法的指导方针进行格式化.

主要成果:

  • 从相似性得分成功过渡到概率概率比率.
  • 证明了在数字证据的源相机归因中概率比率的实用性.
  • 提供了一个与法医验证标准兼容的框架.

结论:

  • 概率比率为源摄像头归因提供了一个更易于解释和概率合理的方法.
  • 这一转变显著提高了法医调查中数字证据的价值.
  • 拟议的方法支持在法律背景下做出更知情的决策.