Abstract: The present disclosure relates to a method for query expansion. The method comprises: a) receiving a current query having at least one search term; b) inputting the at least one search term of the current query to a set of one or more query expansion modules, wherein the query expansion modules are configured to predict expansion terms of input terms; c) receiving from the set of expansion modules candidate expansion terms of the search term; d) modifying the current query using at least part of the candidate expansion terms, resulting in a modified query having at least one modified search term, The method further comprises repeating steps b) to d) using the modified query as the current query, the repeating being performed until a predefined stopping criterion is fulfilled.

Abstract: An approach for determining a concatenated confidence value of a first class using an artificial-intelligence module (AI-module) for performing a classification based on the concatenated confidence value of the first class. The AI-module comprises a knowledge graph module, a machine learning module, and a weighting module. A processor determines a first confidence value of the first class as a first function of an input dataset using the machine learning module. A processor determines a second confidence value of the first class as a second function of the input dataset using the knowledge graph module. A processor determines the concatenated confidence value of the first class as a third function of the first confidence value of the first class, the second confidence value of the first class, and a value of a weighting parameter of the weighting module.

Abstract: The present disclosure relates to a method for query expansion. The method comprises: a) receiving a current query having at least one search term; b) inputting the at least one search term of the current query to a set of one or more query expansion modules, wherein the query expansion modules are configured to predict expansion terms of input terms; c) receiving from the set of expansion modules candidate expansion terms of the search term; d) modifying the current query using at least part of the candidate expansion terms, resulting in a modified query having at least one modified search term, The method further comprises repeating steps b) to d) using the modified query as the current query, the repeating being performed until a predefined stopping criterion is fulfilled.