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Anomaly Detection with Tensor Networks

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arxiv 2006.02516 v2 pith:4FWQBP5N submitted 2020-06-03 cs.LG quant-phstat.ML

classification cs.LGquant-phstat.ML
keywords networkstensoranomalydatasetsdeepdetectionmodeltask
verification ladder T0 review T1 audit T2 compute T3 formal
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Originating from condensed matter physics, tensor networks are compact representations of high-dimensional tensors. In this paper, the prowess of tensor networks is demonstrated on the particular task of one-class anomaly detection. We exploit the memory and computational efficiency of tensor networks to learn a linear transformation over a space with dimension exponential in the number of original features. The linearity of our model enables us to ensure a tight fit around training instances by penalizing the model's global tendency to a predict normality via its Frobenius norm---a task that is infeasible for most deep learning models. Our method outperforms deep and classical algorithms on tabular datasets and produces competitive results on image datasets, despite not exploiting the locality of images.

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Cited by 7 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Geometric Prototype Learning in Quantum Hilbert Space with Matrix Product States

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    A quantum prototype learning scheme encodes class representatives as generative matrix product states and performs classification and clustering via geometric measures in Hilbert space, outperforming classical prototy...

  2. SMT-AD: a scalable quantum-inspired anomaly detection approach

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    SMT-AD applies superposition of bond-dimension-1 matrix product operators with multiresolution Fourier embedding to achieve competitive anomaly detection on standard datasets with linear parameter growth.

  3. SMT-AD: a scalable quantum-inspired anomaly detection approach

    cs.LG 2026-04 unverdicted novelty 5.0 of 10

    SMT-AD detects anomalies via superposed multiresolution bond-dimension-1 MPOs with Fourier embedding, claiming competitive baseline performance and linear parameter scaling.

  4. Anomaly Detection from a Tensor Train Perspective

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    Tensor Train compression algorithms detect anomalies by maintaining normal data structure and deleting anomalous structure, tested on digits, faces, and cyber-attack datasets.

  5. Efficient Finite Initialization with Partial Norms for Tensorized Neural Networks and Tensor Networks Algorithms

    cs.LG 2023-09 unverdicted novelty 5.0 of 10

    Introduces two algorithms for efficient finite initialization of tensor network layers via iterative partial norm computations, applied to MPS/TT and MPO/TT-M layers with scaling analysis and public code.

  6. SeeMPS: A Python-based Matrix Product State and Tensor Train Library

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    Tensor networks developed for quantum states are reviewed as tools for machine learning models, with assessment of their potential computational, explanatory, and privacy advantages alongside remaining challenges.

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