STRmix Workshop, Cergy Pontoise (near Paris), France, 3-6 September 2019

Wednesday, 7 August 2019

Spaces are limited, so please download the registration form by clicking here, [PDF, 91 KB] and then email it to before 15 August 2019 to register your interest (1 form per participant).  This training is in the latest major version release of STRmix™, and is open for attendance by scientific experts that act for prosecution or defense legal teams. Attendance will be confirmed once minimum attendee numbers are met.

Location: French Gendarmerie Nationale Forensic Institute, Cergy Pontoise, France

Workshop price: 1,000€ per participant

Overview:  This workshop will provide participants with extensive and full STRmix™ user training, covering likelihood ratios and sampling uncertainty, introduction to STRmix™, and a detailed description of the molecular models and mathematics on which STRmix™ is based.  Also included are ample “hands on” sessions to allow participants to use and familiarise themselves with STRmix™ under the guidance of the instructors.

 Participants will also receive:

  • the STRmix™ User’s manual, with a companion text which describes in detail the mathematics and biology behind STRmix™, the database search and model maker functions
  • the STRmix™ Implementation and Validation guide
  • a 2-month evaluation version of STRmix™.


Draft schedule (subject to minor changes):


Day 1

Day 2

Day 3

Day 4

0900 – 0930


Day 1 review

Day 2 review

Day 3 review

2. Continuous models. Why move?

14. Variability in the LR (sampling error and the HPD)


19b.EXERCISE Moot court

0930 - 1000

9. EXERCISE. The MCMC game & Robot

3. Introduction to LRs 

15. Relatives and unified LR 

1000 - 1030

20. Database searching

& EXERCISE. Database search functions

1030 - 1100

4. Introduction to STRmix™

1100 - 1130

5. EXERCISE. Single source and mixture examples

10. Number of contributors


21. EXERCISE. Casework examples

1130 - 1200

1200 - 1300





1300 - 1330

6. The biological model

11. EXERCISE. Number of contributors

17. EXERCISE. NIST mix continued

22. Replicates & Multi Kits

1330 - 1400

12. Population Genetic Models

(NRC II report & recommendations 4.1 and 4.2)

1400 - 1430

7. Verbalizing LRs and hypothesis setting and EXERCISE

 18. Developmental Validation

23. Workflows discussion

1430 - 1500

24. Implementation discussion

1500 - 1530

 13. STRmix™ output and diagnostics



19a. EXERCISE Moot Court

1530 - 1600

8. STRmix™ profile building and locus weights

25. Wrap up

1600 - 1630









STRmix™ Trial version installation: This will be a remote installation of STRmix approximately a week before the start of the workshop.  A laptop is required during the workshop and the specifications are as follows:


Minimum specifications

Recommended specifications

Intel core 2 (Quad core) processor

Intel core i5, i7 processor  or better



300MB free HDD space

300MB free HDD space

Minimum of 2 cores

Minimum of 4 cores

Windows 7 or above

Windows 7 Professional 64 bit

 Note:  Please ensure that your PC has USB access.

Software specifications:

  • Windows 7 service pack 1, Windows 8.1 or Windows 10
  • MS Excel and Adobe Acrobat Reader.
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