On the reliability of feature attribution methods for speech classification
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912387230072832 |
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| author | Shen, Gaofei Mohebbi, Hosein Bisazza, Arianna Alishahi, Afra Chrupała, Grzegorz |
| author_facet | Shen, Gaofei Mohebbi, Hosein Bisazza, Arianna Alishahi, Afra Chrupała, Grzegorz |
| contents | As the capabilities of large-scale pre-trained models evolve, understanding the determinants of their outputs becomes more important. Feature attribution aims to reveal which parts of the input elements contribute the most to model outputs. In speech processing, the unique characteristics of the input signal make the application of feature attribution methods challenging. We study how factors such as input type and aggregation and perturbation timespan impact the reliability of standard feature attribution methods, and how these factors interact with characteristics of each classification task. We find that standard approaches to feature attribution are generally unreliable when applied to the speech domain, with the exception of word-aligned perturbation methods when applied to word-based classification tasks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_16406 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On the reliability of feature attribution methods for speech classification Shen, Gaofei Mohebbi, Hosein Bisazza, Arianna Alishahi, Afra Chrupała, Grzegorz Computation and Language Audio and Speech Processing As the capabilities of large-scale pre-trained models evolve, understanding the determinants of their outputs becomes more important. Feature attribution aims to reveal which parts of the input elements contribute the most to model outputs. In speech processing, the unique characteristics of the input signal make the application of feature attribution methods challenging. We study how factors such as input type and aggregation and perturbation timespan impact the reliability of standard feature attribution methods, and how these factors interact with characteristics of each classification task. We find that standard approaches to feature attribution are generally unreliable when applied to the speech domain, with the exception of word-aligned perturbation methods when applied to word-based classification tasks. |
| title | On the reliability of feature attribution methods for speech classification |
| topic | Computation and Language Audio and Speech Processing |
| url | https://arxiv.org/abs/2505.16406 |