Yan Leng
AI measurement

Models.
Measurements.
Human evidence.

We study how AI behaves, how reliably it measures human outcomes, and where human evidence is needed. Our work connects behavioral audits with measurement calibration, treatment-effect estimation, and the allocation of data collection.

Common referenceHuman
evidence

01 Audit

Examine model behavior, internal mechanisms, and the reliability of AI-based measurements.

02 Correction

Calibrate measurements and the estimates built from them.

03 Data allocation

Identify where additional human evidence is most useful.

Measurement errors
Evidence gaps
Targeted human data
Networks

Networks &
decision-making

We study how relationships shape behavior and how network information can improve decisions. Our projects recover hidden ties, examine influence and change, and develop methods for targeting, forecasting, and data collection.

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