HISTORY & METHOD
An original program with an evolving method.
Psy-EVAL came first. Its focus on structured psychiatric assessment established the foundation for later EVAL research, including Sleep-EVAL in the early 1990s.
ORIGINS
From psychiatric evaluation to connected phenotypes.
Maurice M. Ohayon developed the original Psy-EVAL program before the work expanded into a distinct Sleep-EVAL program. The two domains remain related through a common interest in structured interviews, population research and clinically interpretable inference.
On this site, Psy-EVAL stands as its own research identity. Sleep-EVAL has its own domain, while EVAL Research Institute brings the broader activities together.
Structured interview
Document symptoms, duration, context and impact with consistent questions.
Clinical hypotheses
Assess alternative and concurrent explanations within a knowledge base.
Inferential review
Re-evaluate evidence and uncertainty as new information appears.
Population analysis
Study patterns, comorbidity and change across people and time.
AD-INFER
Clinical reasoning with a traceable structure.
Ad-Infer is the EVAL knowledge-based inference architecture. Its clinical reasoning uses rules, causal relationships, fuzzy evaluation and belief updating to examine positive and differential hypotheses. Statistical methods can help identify patterns at population scale.
An integrated language-model component can support questioning, clarification and the interpretation of new information. Information it returns may support or challenge a hypothesis; Ad-Infer re-evaluates it through its own inferential process. The language model does not independently assign a diagnosis.
Read the related Sleep-EVAL descriptionRESEARCH CONTEXT
Interpretation requires care.
Descriptions of a research system are not a patient-facing diagnostic service. Study-specific methods, diagnostic classifications and validation results belong with their corresponding publications.