disputed Bayesian Networks
A template Bayesian network for combining forensic evidence on an item with an uncertain relation to the disputed activities.
data
Format
A discrete Bayesian network for the evaluation of transfer evidence given activity level propositions considering a dispute about the relation of an item to one or more activities (Figure 3). The probabilities were given in the referenced paper. The vertices are:
- BGFibers: Background on fibers matching Y top on sweater (false, true);
- BGU: Background DNA U on sweater (false, true);
- CaseFind: Case findings on sweater (false, true);
- DNAfind: DNA findings on sweater (DNA X, DNA U, DNA X + U, No DNA);
- DNAU: DNA U present on sweater (false, true);
- DNAX: DNA X present on sweater (false, true);
- FiberFind: Fiber findings on sweater(false, true);
- FibersSweater: Fibers matching Y garment on sweater (false, true);
- ItemProposition: Sweater worn by offender during incident (false, true);
- Prop: Who strangled person Y? (H1, H2);
- TPRaltactX: Transfer of DNA X from X to sweater via X wearing sweater two weekd before incident (false, true);
- TPRUstrangledY: Transfer of DNA U from U to sweater via U strangling Y (false, true);
- TPRXstrangledY: Transfer of DNA X from X to sweater via X strangling Y (false, true);
- TPRYtoSweater: Transfer of fibers from Y top to sweater during incident (false, true);
- UstrangledY: Unknown person strangled person Y (false, true);
- Xaltact: X wore sweater two weeks before incident (false, true);
- XstrangledY: Mr. X strangled person Y (false, true);
Returns
An object of class bn.fit. Refer to the documentation of bnlearn for details.
References
Vink, M., de Koeijer, J. A., & Sjerps, M. J. (2024). A template Bayesian network for combining forensic evidence on an item with an uncertain relation to the disputed activities. Forensic Science International: Synergy, 9, 100546.