Nokia Technologies Oy

Khan Baykaner

David Bitauld

Troels Roennow

Hongwei Li

Krishna Dubba

Antti Niskanen

Kim Blomqvist

Leo Mikko Johannes Kärkkäinen

Joachim Wabnig

Troels Ronnow

Enrique Martin Lopez

Anton Isopoussu

Philip Gordon Derrick

Alberto Ramos

Jiri Vestfal

Emma Victoria Smith

Troels F Roennow

Disclosed is a distributed computer system and a method of operation thereof. The distributed computer system includes a plurality of worker nodes. The collective learning of the worker nodes is managed within the distributed computer system. The operation of distributed computer system is coordinated by employing a distributed ledger arrangement. The distributed computer system comprises a monitoring arrangement to provide learning parameters to the worker nodes by way of executing smart contract. Each of the worker nodes is operable to train a computing model based on the learning parameters and a set of training data. The monitoring arrangement provides a reward to at least one of the worker nodes for training the computing model. The reward is determined based on a number and frequency of intermediary computing models provided by a given worker node to a remainder of the worker nodes; and a quality of the intermediary computing models.

Distributed computer system and method of operation thereof

A technique, comprising: identifying, at a node forming part of a group of nodes operating a distributed ledger comprising a block chain, a decision to retrospectively change a first smart contract prescribing one or more changes in the ledger already recorded in one or more existing blocks of the blockchain; and, without changing any existing blocks of the blockchain, updating the ledger by adding to the current end of the blockchain a new block indicating a new state of the ledger determined by a re-execution of all operations, according to the first smart contract and one or more other smart contracts, recorded in one or more blocks of the blockchain after a block recording an operation of the first smart contract, while taking into account the change to the first smart contract.

Changing smart contracts recorded in block chains

An apparatus comprising a processor and memory including computer program code, the memory and computer program code configured to, with the processor, enable the apparatus at least to: identify a target object, from a plurality of objects, which is within a field of view of a first user based on a determined location and orientation of the first user relative to respective predefined locations of the plurality of objects; and generate a command signal configured to trigger a corresponding action associated with the target object.

Apparatus, method and system for identifying a target object from a plurality of objects

According to an example aspect, there is provided a method for obtaining profile information by a node of a distributed network. Need for providing profile information for a user by a node of a second local private network is detected. A profile request transaction is provided to a public distributed ledger for obtaining profile information associated with the user. Profile information associated with the user is received from a providing node capable of accessing a first private distributed ledger storing the profile information. At least some of the received user profile information is provided for at least one device connected to the second local private network.

Profile information sharing

A technique, comprising: identifying, at an existing node of a distributed ledger network for operation according to a voting-based consensus algorithm, a new candidate node for the distributed ledger network, wherein said identifying is done based on an existing unique identifier unrelated to the distributed ledger network.

Voting-consensus distributed ledger

According to an example aspect of the present invention, there is provided an apparatus comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus at least to obtain a document, segmented into a first number of segments (), obtain the first number of outputs of a cryptographic operation, such that for each output, a random value and a document segment are employed to generate an input to the cryptographic operation (), build a Merkle tree based on the outputs of the cryptographic operation (), and store a top hash of the Merkle tree in a block chain ().

Secure document management

According to an example aspect of the present invention, there is provided an apparatus comprising a memory configured to store an identifier of the apparatus, at least one processing core configured to obtain, from sensor information, a service identifier and a session identifier, compile a message addressed to a service provider associated with the service identifier, the message comprising the identifier of the apparatus and the session identifier, and cause transmission of the message toward the service provider.

Growing community of inventors

Upper Cambourne, United Kingdom

Khan Baykaner