Abstract:

This paper describes how Likelihood Ratios (LRs) can be used to measure the strength of evidence in forensic science. It explains why forensic experts cannot answer ultimate questions such as: "Who did it?", but can instead provide measures of the strength of evidence. This is followed by a short state of the art overview of currently developed LR models including a description of problems that are not yet completely solved.

Key words: Lidekihood Ratio, evaluation of evidence, LR model