We are excited to introduce the new Harmony Meta platform, which we have developed over the past year. Harmony Meta connects many of the existing study catalogues and registers.
If you want to search for longitudinal studies that measured a particular variable such as “psychosis in adolescence” and you don’t know the exact wording that was used by the researchers, you can now use the AI search on Harmony Meta.
Try it here: https://harmonydata.ac.uk/search
Other examples of things you can search for
All of these will turn up studies that measured these values or approximate synonyms. If the researchers asked a question such as “difficulty reading”, your search for “dyslexia” will find it.
We have 5.5 million variables indexed. As far as I can tell, this is every large longitudinal study run in the UK ever, including well known studies such as the Millennium Cohort Study, the 1970 British Cohort Study, and Born in Bradford.
Harmony Meta works with a vector index so all 5.5 million variables are converted to vectors using a large language model.
Investigators on this project were Bettina Moltrecht and Eoin McElroy. Rachel Holland Gomes worked on the UI, John Rogers on the front end, Thomas Wood (Fast Data Science) on the back end, with Jay Dugad working on community management.
Harmony Meta was funded by ESRC, the Economic and Social Research Council. We would like to acknowledge partners Population Research UK (PRUK), UCL Centre for Longitudinal Studies, DATAMIND UK, The Alan Turing Institute, National Centre for Research Methods, UK Research and Innovation, Wellcome Trust, National Centre for Social Research, and Social Finance.
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This is an article based on my presentation on “The Role of Artificial Intelligence in Expert Investigations and the Preparation of reports” which I gave at the Expert Witness Conference on 20 May 2026.
Many companies and organisations have large datasets that are stored in a very unstructured format. For example, you could work for a US based healthcare provider or insurer and have patient records stored in a free text format such as HL7 files or PDFs. A building regulator, land registry, or mortgage provider may have texts and accompanying diagrams from thousands of building inspections or land title deeds. A patent attorney’s office may have records of patent applications in PDF format.
On 20 May, I attended the Expert Witness Conference in Dublin, Ireland, organised by La Touche Training. It was an eye opening event with a mixture of lawyers and expert witnesses in different fields from Ireland and abroad. The event was chaired by Mr Justice Michael Peart, with a keynote address by the Honourable Mr Justice David Barniville, President of the High Court of Ireland.
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