| 2025 | MDAI | Probabilistic-Fuzzy Inference with Piecewise Linear Quantile Regression. | Nhung Cao, Michal Holcapek, Radek Valsek, Nicols Madrid |
| 2025 | MDAI | An Investigation of Alternative Methods for the Inference of Probabilistic-Fuzzy Systems. | Nhung Cao, Radek Valsek, Michal Holcapek, Nicols Madrid, David Nedela |
| 2024 | IPMU | Analysis of the φ-Index of Inclusion Restricted to a Set of Indexes. | Nicols Madrid, Elosa Ramrez-Poussa |
| 2023 | EUSFLAT | A Logic to Reason About f-Indices of Inclusion over Ł | Tommaso Flaminio, Llus Godo, Nicols Madrid, Manuel Ojeda-Aciego |
| 2021 | EUSFLAT | Approaching the Square of Oppositions in Terms of the | Nicols Madrid, Manuel Ojeda-Aciego |
| 2020 | ECAI | New Measures of Inclusion Between Fuzzy Sets in Terms of the φ-Index of Inclusion. | Nicols Madrid, Manuel Ojeda-Aciego |
| 2017 | IFSA | Non-linear scale-space based on fuzzy sharpening. | Carlos Lopez-Molina, Nicols Madrid |
| 2015 | EUSFLAT | ƒ-inclusion indexes between fuzzy sets. | Nicols Madrid, Manuel Ojeda-Aciego, Irina Perfilieva |
| 2015 | SMC | Verification of Top-K Algorithm for a Family of Non-monotonic Ranking Functions. | Nicols Madrid, Pavel Rusnok |
| 2013 | EUSFLAT | Convex combination of grouping functions for image thresholding. Selection of weighting vectors. | Aranzazu Jurio, Miguel Pagola, Daniel Paternain, Nicols Madrid, Humberto Bustince |
| 2013 | FQAS | On Top-k Retrieval for a Family of Non-monotonic Ranking Functions. | Nicols Madrid, Umberto Straccia |
| 2010 | IPMU | Measuring Instability in Normal Residuated Logic Programs: Discarding Information. | Nicols Madrid, Manuel Ojeda-Aciego |