View full-text article in PMC Sensors (Basel). 2022 May 27;22(11):4084. doi: 10.3390/s22114084 Search in PMC Search in PubMed View in NLM Catalog Add to search Copyright and License information © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). PMC Copyright notice Algorithm 2 Mask application-Attribution. 1:Define: x as input, θ as classifier, σ as perturbation function, S as list of scores and N as feature occurrences across all masks M. 2: for m=1,…,M do 3: xmi=σ(x,mi) 4: y′=θ(xmi) 5: Append y′ to S 6: end for 7: S=ST×MN 8: S=S−min(S)max(S−min(S))