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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

168,742 papers · 148 categories

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0111 · Oct 201819922001200920172026
4 results for “X-means”
Inductive Geometric Matrix Midrangescs.LG

A new geometric method for clustering SPD data improves upon Euclidean and Riemannian approaches.

problem Skewed interpretations of SPD data in Euclidean analysis and computational inefficiency of Riemannian methods.
method Proposes a geometric method based on the Thompson metric for unsupervised clustering of SPD data.
result Demonstrates improved clustering results using inductive midrange centroid computation.
SPD matricesThompson metricgeometric clusteringcentroid computationX-means
2020-06-02abs ↗pdf ↗
Anomalous Agreement: How to find the Ideal Number of Anomaly Classes in Correlated, Multivariate Time Series Datacs.LG

New index improves anomaly detection in correlated time series data.

problem Challenges in evaluating cluster quality for anomaly detection.
method Introduced Synchronized Anomaly Agreement Index (SAAI) to assess cluster quality.
result Maximizing SAAI improves anomaly detection accuracy by 0.23 compared to SSC and by 0.32 compared to X-Means.
anomaly detectionmultivariate time seriescluster qualitySynchronized Anomaly Agreement Index (SAAI)
2025-01-13abs ↗pdf ↗