AI RESEARCH
NEST: Nested Event Stream Transformer for Sequences of Multisets
arXiv CS.LG
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ArXi:2602.00520v3 Announce Type: replace Event stream data often exhibit hierarchical structure in which multiple events co-occur, resulting in a sequence of multisets (i.e., bags of events). In electronic health records (EHRs), for example, medical events are grouped into a sequence of clinical encounters with well-defined temporal structure, but the order and timing of events within each encounter may be unknown or unreliable.