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HaloGen (Hierarchical Bayesian Activity Level Orchestrator: Next Generation) is a statistical software package that calculates Likelihood Ratios (LRs) to aid in the interpretation of complex, low-level DNA evidence using a Bayesian hierarchical model.
HaloGen (Hierarchical Bayesian Activity Level Orchestrator: Next Generation) is a statistical software package that calculates Likelihood Ratios (LRs) to aid in the interpretation of complex, low-level DNA evidence using a Bayesian hierarchical model.
A list of resources (latest version)
A list of resources (latest version)
Tutorial, showing examples and some theory can be downloaded here (Use this to get started): Halogen_v3.0.0_tutorial.pdf
Tutorial, showing examples and some theory can be downloaded here (Use this to get started): Halogen_v3.0.0_tutorial.pdf
Data for all ReAct I and ReAct II cases, in the form of .rds files (cache assets), can be viewed and downloaded from here
Archived versions of Halogen along with complete list of assets are available in the release list on left side of the page
Archived versions of Halogen along with complete list of assets are available in the release list on left side of the page
Methods used to generate the data described for ReAct II cases are described
Methods used to generate the data described for ReAct II cases are described
The experimental designs described in detail
To generate the data, use the ShinyRFU2 program
Presentation of results and analysis: Instructions how to fill in the excel spreadsheet for ReAct II data
The ReAct II spreadsheet used to collect information from experiments
Experimental design and role clarity for ReAct II data collection
Publications supporting the foundation validation of HaloGen (supplements also contain a great deal of information and can be downloaded from links in the papers)
Publications supporting the foundation validation of HaloGen (supplements also contain a great deal of information and can be downloaded from links in the papers)
Gill P, Bleka Ø
Likelihood Ratios Given Activity-Level Propositions for DNA Transfer Evidence: Theoretical Foundations of the HaloGen Framework (Part I)
Forensic Science International: Genetics, 2026; 86 https://doi.org/10.1016/j.fsigen.2026.103570Gill P, Bleka Ø
Likelihood Ratios Given Activity-Level Propositions for DNA Transfer Evidence: Practical Implementation and Simulation Studies Using the HaloGen Engine (Part II)
Forensic Science International: Genetics, 2026; 86 https://doi.org/10.1016/j.fsigen.2026.103571
The following publications are undergoing peer review, but are available as preprints
The following publications are undergoing peer review, but are available as preprints
Johannessen, Gill, P., Børsum, C., & Fonneløp, A. E. (2026).
DNA transfer to stockings during active and social contact: experimental data to evaluate findings given activity-level propositions
http://ssrn.com/abstract=7466460
Gill, P., Johannessen, H., Bleka, Ø., Børsum, C., & Fonneløp, A. E. (2026).
Activity-level evaluation of DNA transfer to stockings: comparison of HaloGen with simplified contributor-based approaches. bioRxiv. doi:10.1101/2026.09.10.749444 https://www.biorxiv.org/content/10.64898/2026.09.04.749444v1
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