Abstract: Broadly speaking, embodiments of the present techniques provide a method for training a machine learning, ML, model to update global and local versions of a model. We propose a novel hierarchical Bayesian approach to Federated Learning (FL), where our models reasonably describe the generative process of clients' local data via hierarchical Bayesian modeling: constituting random variables of local models for clients that are governed by a higher-level global variate. Interestingly, the variational inference in our Bayesian model leads to an optimisation problem whose block-coordinate descent solution becomes a distributed algorithm that is separable over clients and allows them not to reveal their own private data at all, thus fully compatible with FL.

Abstract: Broadly speaking, embodiments of the present techniques provide a method for reducing errors in the outputs of machine learning, ML, models on a potential output of the models to resolve any inconsistencies before outputting a final result from the models. The final result respects a set of rules or constraints, which may include logical constraints. Advantageously, this reduces the risk of a model outputting a result which violates some rules associated with the overall task of the model, which could be dangerous or provide a poor user experience.

Abstract: An electronic apparatus and a method for controlling the electronic apparatus are disclosed. The method includes: obtaining a neural network model trained to detect an object corresponding to at least one class; obtaining a user command for detecting a first object corresponding to a first class; and based on the first object not corresponding to the at least one class, obtaining a new neural network model based on the neural network model and information of the first object.

Abstract: Broadly speaking, the present techniques generally relate to a computer-implemented method and apparatus for training a machine learning, ML, model which is locally installed on a device, where the ML model may be used in automatic speech recognition, object recognition or similar applications. Advantageously, the present techniques are suitable for implementation on resource-constrained devices that capture audio signals, such as smartphones and Internet of Things devices.

Abstract: Provided is a computer-implemented method for training a machine learning (ML) model using labelled and unlabelled data, the method comprising obtaining a set or training data comprising a set of labelled data items and a set of unlabelled data items, training a loss module of the ML model using labels in the set of labelled data items, to generate a trained loss module capable of estimating a likelihood of a label for a data item, and training a task module of the ML model using the loss module, the set of labelled data items, and the set of unlabelled data items, to generate a trained task module capable of making a prediction of a label for input data.

Abstract: The subject-matter of the present disclosure relates to a computer-implemented method of training a machine learning, ML, meta learner classifier model to perform few-shot image or speech classification, the method comprising: training the machine learning, ML, meta learner classifier model by: iteratively obtaining a support set and a query set of a current episode; adapting the model using the support set; measuring a performance of the adapted model using the query set; and updating the classifier based on the performance; wherein adapting the model using the support set comprises: deriving a Laplace approximated posterior using a linear classifier based on Gaussian mixture fitting; and deriving a predictive distribution using the approximated posterior; wherein measuring the performance of the adapted model using the query set comprises: determining a loss associated with the predictive distribution using the query set; and wherein updating the classifier based on the performance comprises minimising the

Abstract: Broadly speaking, the present techniques relate to methods and systems for executing a probabilistic program based on an uncertain knowledge base (KB). The methods and systems construct a trigger graph from the uncertain KB, each node of the trigger graph being associated with a rule of the uncertain KB.

Abstract: An electronic apparatus and a method for controlling the electronic apparatus are disclosed. The method includes: obtaining a neural network model trained to detect an object corresponding to at least one class; obtaining a user command for detecting a first object corresponding to a first class; and based on the first object not corresponding to the at least one class, obtaining a new neural network model based on the neural network model and information of the first object.