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.

Abstract: A method for compressing a sequence of records, each record comprising a sequence of fields, comprises steps of buffering a record in a line of a matrix, reordering the lines of the matrix according to locality sensitive hash values of the buffered records such that records with similar contents in corresponding fields are placed in proximity, and consolidating fields in columns of the matrix into a block of codes. In this, consolidating yields codes of one of a first type comprising a sequence of individual fields and a second type comprising a sequence of fields with at least one repetition. The second type of code comprises a presence field indicating repeated fields and an iteration field indicating a number of respective repetitions. Decompression of the records from the block codes compressed above is also described.

Abstract: A method for digitally signing a document, a secure device, and a computer program product for implementing the method. The method employs a secure device which is protected against malicious software or malware and is adapted to establish a secure connection to a recipient via a host. The method includes: connecting to a terminal; accessing the contents of a document received by the secure device; instructing at the secure device to communicate the accessed contents to an output device other than the terminal such that the contents can be verified by a user; ascertaining at the secure device a command received to digitally sign the document; executing at the secure device the ascertained command; and instructing to send a digitally signed document to a recipient over a connection established via the host connected to a telecommunication network.

Abstract: A method for compressing a sequence of records, each record comprising a sequence of fields, comprises steps of buffering a record in a line of a matrix, reordering the lines of the matrix according to locality sensitive hash values of the buffered records such that records with similar contents in corresponding fields are placed in proximity, and consolidating fields in columns of the matrix into a block of codes. In this, consolidating yields codes of one of a first type comprising a sequence of individual fields and a second type comprising a sequence of fields with at least one repetition. The second type of code comprises a presence field indicating repeated fields and an iteration field indicating a number of respective repetitions. Decompression of the records from the block codes compressed above is also described.

Abstract: A method for digitally signing a document, a secure device, and a computer program product for implementing the method. The method employs a secure device which is protected against malicious software or malware and is adapted to establish a secure connection to a recipient via a host. The method includes: connecting to a terminal; accessing the contents of a document received by the secure device; instructing at the secure device to communicate the accessed contents to an output device other than the terminal such that the contents can be verified by a user; ascertaining at the secure device a command received to digitally sign the document; executing at the secure device the ascertained command; and instructing to send a digitally signed document to a recipient over a connection established via the host connected to a telecommunication network.

Abstract: Methods and apparatus are provided for alternative routing of a connection between a source node and a destination node in a PNNI hierarchical network. The alternative routing method comprises responding to a failed connection between said nodes due to a sole-access element of the network structure as seen by the source node, where a said sole-access element is an element which provides sole access to the destination node in said network structure, by: selecting at least one non-sole-access element of the route used by the failed connection in said network structure; identifying an alternative route for the connection in said network structure which does not utilize the at least one selected element; and using the alternative route for establishment of the connection between said nodes.