| 1990 | An Approach to the Linguistic Summarization of Data. | Ronald R. Yager, Kenneth M. Ford, Alberto J. Caas |
| 1990 | Generalized Cardinal Numbers and Their Ordering. | Maciej Wygralak |
| 1990 | Time and Incompleteness in a Deductive Database. | M. Howard Williams, Quinzheng Kong |
| 1990 | Management of Uncertainty in the Attachment Problem in Natural Language Processing. | Paolo Terenziani, Leonardo Lesmo, Elisabetta Gerbino |
| 1990 | Application Aspects of Qualitative Conditional Independence. | Marcus Spies |
| 1990 | On Spohn's Theory of Epistemic Beliefs. | Prakash P. Shenoy |
| 1990 | Fuzzy Logic Approach to Modelling in Ecosystem Research. | A. Salski, C. Sperlbaum |
| 1990 | A Hybrid Belief System for Doubtful Agents. | Alessandro Saffiotti |
| 1990 | How to Reason With Uncertainty Knowledge. | Nico Roos |
| 1990 | Information Theory Based on Fuzzy (Possibilistic) Rules. | Arthur Ramer |
| 1990 | Fuzzy Multicriteria Techniques: An Application to Transport Planning. | Alan D. Pearman, Javier Montero, Juan Tejada |
| 1990 | Probabilistic Default Reasoning. | Gerhard Paass |
| 1990 | On Modelling Fuzzy Preference Relations. | Sergei Ovchinnikov |
| 1990 | On Representation of Source Reliability in Weight of Evidence. | Daniel E. O'Leary |
| 1990 | A Fuzzy Neuron Based Upon Maximum Entropy Ordered Weighted Averaging. | Michael O'Hagan |
| 1990 | Transitive Solutions of Relational Equations on Finite Sets and Linear Lattices. | Antonio Di Nola, Waldemar Kolodziejczyk, Salvatore Sessa |
| 1990 | Measuring Uncertainty Given Imprecise Attribute Values. | Joan M. Morrissey |
| 1990 | Updating Uncertain Information. | Serafn Moral, Luis M. de Campos |
| 1990 | A Study of Probabilities and Belief Functions under Conflicting Evidence: Comparisons and New Methods. | Mary McLeish |
| 1990 | An Abstract Mechanism for Handling Uncertainty. | Trevor P. Martin, James F. Baldwin |
| 1990 | The Combinatorial Neural Network: A Connectionist Model for Knowledge Based Systems. | Ricardo Jos Machado, Armando Freitas da Rocha |
| 1990 | STOSS - A Stochastic Simulation System for Bayesian Belief Networks. | Zhiyuan Luo, Alex Gammerman |
| 1990 | Models for Reasoning with Multiple Uncertainty in Expert Systems. | Jan C. A. van der Lubbe, Eric Backer, W. Krijgsman |
| 1990 | A Pragmatic Way Out of the Maze of Uncertainty Measures. | Giuseppe Longo, Andrea Sgarro |
| 1990 | Information and the Mind-Body Problem. | Giuseppe Longo |