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Kohaliku Outlier Tegur (LOF)

Kohaliku Outlier Tegur (LOF) on tiheduspõhine, järelevalveta anomaaliate tuvastamise algoritm, mille võtsid 2000. aastal kasutusele Breunig, Kriegel, Ng ja Sander. See omistab igale andmepunktile pideva outlier-skoori, mis kvantifitseerib, kui isoleeritud see punkt on oma kohaliku naabruskonna suhtes, võimaldades tuvastada anomaaliaid, mida globaalsed meetodid ei suuda, kuna need segunevad mujal ruumis tihedatesse klastritesse.

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Allikad

  1. Breunig, M. M., Kriegel, H.-P., Ng, R. T., & Sander, J. (2000). LOF: Identifying density-based local outliers. Proceedings of the 2000 ACM SIGMOD International Conference on Management of Data, 93–104. DOI: 10.1145/335191.335388
  2. Aggarwal, C. C. (2017). Outlier Analysis (2nd ed., Ch. 4). Springer. ISBN: 978-3-319-47577-6
  3. Hastie, T., Tibshirani, R., & Friedman, J. (2009). The Elements of Statistical Learning (2nd ed., Ch. 14). Springer. ISBN: 978-0-387-84857-0

Kuidas sellele lehele viidata

ScholarGate. (2026, June 3). Local Outlier Factor (LOF): Density-Based Anomaly Detection. ScholarGate. https://scholargate.app/et/machine-learning/local-outlier-factor

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Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.

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Sellele viitavad

ScholarGateLocal Outlier Factor (Local Outlier Factor (LOF): Density-Based Anomaly Detection). Loetud 2026-06-15 aadressilt https://scholargate.app/et/machine-learning/local-outlier-factor · Andmestik: https://doi.org/10.5281/zenodo.20539026