382 research outputs found
Federated Over-Air Subspace Tracking from Incomplete and Corrupted Data
Subspace tracking (ST) with missing data (ST-miss) or outliers (Robust ST) or
both (Robust ST-miss) has been extensively studied in the last many years. This
work provides a new simple algorithm and guarantee for both ST with missing
data (ST-miss) and RST-miss. Unlike past work on this topic, the algorithm is
much simpler (uses fewer parameters) and the guarantee does not make the
artificial assumption of piecewise constant subspace change, although it still
handles that setting. Secondly, we extend our approach and its analysis to
provably solving these problems when the raw data is federated and when the
over-air data communication modality is used for information exchange between
the peer nodes and the center.Comment: New model, algorithm for centralized case; added algorithms to deal
with sparse outliers; modified organization significantl
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