A computer-implemented neural network graph (1) system, comprising a plurality of neurons (2), each represented by a unique addressable node in a dynamic data structure and each containing a plurality of data, and a plurality of axons and dendrites (4) connecting two or more neurons (2) between them in order to represent a relation and transport one or more data contained in a neuron (2) to another neuron. Each axon (4) having at its end a synapse (3) for connecting it to a neuron (2) and at least one intermediate neuron (2) is connected through an intermediate axon (4) or dendrite and its synapse (3) directly to another axon (4) which connects two main neurons (2). The intermediate neuron (2) and intermediate axon (4) being configured for: selecting one or more specific data contained in the main neurons (2) and transmitted between them along their axon (4) or dendrites (4) in function of a preselected data of the intermediate neuron (2) in such a way to define a first combination of data; selecting one or more specific data, different from the first selection, contained in the main neurons (2) and transmitted between them along the axon (4) in function of a preselected data of the intermediate neuron (2) in such a way to define a second combination of data different from the first; creating a graphical representation comprising a graph (1) of said data in which a first abstraction level is defined by said first selection and a second abstraction level is defined by said second selection different from the first.

A computer-implemented neural network graph (1) system, comprising a plurality of neurons (2), each represented by a unique addressable node in a dynamic data structure and each containing a plurality of data, and a plurality of axons and dendrites (4) connecting two or more neurons (2) between them in order to represent a relation and transport one or more data contained in a neuron (2) to another neuron. Each axon (4) having at its end a synapse (3) for connecting it to a neuron (2) and at least one intermediate neuron (2) is connected through an intermediate axon (4) or dendrite and its synapse (3) directly to another axon (4) which connects two main neurons (2). The intermediate neuron (2) and intermediate axon (4) being configured for: selecting one or more specific data contained in the main neurons (2) and transmitted between them along their axon (4) or dendrites (4) in function of a preselected data of the intermediate neuron (2) in such a way to define a first combination of data; selecting one or more specific data, different from the first selection, contained in the main neurons (2) and transmitted between them along the axon (4) in function of a preselected data of the intermediate neuron (2) in such a way to define a second combination of data different from the first; creating a graphical representation comprising a graph (1) of said data in which a first abstraction level is defined by said first selection and a second abstraction level is defined by said second selection different from the first.

Methods, systems and apparatus, including computer programs encoded on computer storage medium, for training a neurosymbolic data imputation system on training data inputs in a domain to impute missing data in a data input from the data domain. In one aspect a method includes, for each training data input, adding random noise to missing fields of the training data input;

generating an embedding data input for the training data input using concept embeddings from the domain; processing the noisy data input and the embedding data input through a correlation network to obtain correlation data; applying attention to the noisy training data input and the correlation data to generate a combined data input; processing, by an autoencoder, the combined data input to obtain a decoded data output; computing a difference between the decoded data output and the training data input; and updating parameters of the data imputation system using the difference.

Systems and computer-implemented methods of performing image registration. One method includes receiving a first image and a second image acquired from a patient at different times and, in each of the first image and the second image, detecting an upper boundary of an imaged object in an image coordinate system and detecting a lower boundary of the imaged object in the image coordinate system. The method further includes, based on the upper boundary and the lower boundary of each of the first image and the second image, cropping and padding at least one of the first image and the second image to create an aligned first image and an aligned second image and executing a registration model on the aligned first image and the aligned second image to compute a deformation field between the aligned first image and the aligned second image.

A method for determining hard example sensor data inputs for training a task neural network is described. The task neural network is configured to receive a sensor data input and to generate a respective output for the sensor data input to perform a machine learning task. The method includes: receiving one or more sensor data inputs depicting a same scene of an environment, wherein the one or more sensor data inputs are taken during a predetermined time period; generating a plurality of predictions about a characteristic of an object of the scene; determining a level of inconsistency between the plurality of predictions; determining that the level of inconsistency exceeds a threshold level; and in response to the determining that the level of inconsistency exceeds a threshold level, determining that the one or more sensor data inputs comprise a hard example sensor data input.

Various methods and systems are provided for computed tomography imaging. In one embodiment, a method includes acquiring, with an x-ray detector and an x-ray source coupled to a gantry, a three-dimensional image volume of a subject while the subject moves through a bore of the gantry and the gantry rotates the x-ray detector and the x-ray source around the subject, inputting the three-dimensional image volume to a trained deep neural network to generate a corrected three-dimensional image volume with a reduction in aliasing artifacts present in the three-dimensional image volume, and outputting the corrected three-dimensional image volume. In this way, aliasing artifacts caused by sub-sampling may be removed from computed tomography images while preserving details, texture, and sharpness in the computed tomography images.

Various methods and systems are provided for computed tomography imaging. In one embodiment, a method includes acquiring, with an x-ray detector and an x-ray source coupled to a gantry, a three-dimensional image volume of a subject while the subject moves through a bore of the gantry and the gantry rotates the x-ray detector and the x-ray source around the subject, inputting the three-dimensional image volume to a trained deep neural network to generate a corrected three-dimensional image volume with a reduction in aliasing artifacts present in the three-dimensional image volume, and outputting the corrected three-dimensional image volume. In this way, aliasing artifacts caused by sub-sampling may be removed from computed tomography images while preserving details, texture, and sharpness in the computed tomography images.

Implementations disclosed describe methods and systems to perform the methods of optimizing a size of memory used for accumulation of neural node outputs and for supporting multiple computational paths in neural networks. In one example, a size of memory used to perform neural layer computations is reduced by performing nodal computations in multiple batches, followed by rescaling and accumulation of nodal outputs. In another example, execution of parallel branches of neural node computations include evaluating, prior to the actual execution, the amount of memory resources needed to execute a particular order of branches sequentially and select the order that minimizes this amount or keeps this amount below a target threshold.

Implementations disclosed describe methods and systems to perform the methods of optimizing a size of memory used for accumulation of neural node outputs and for supporting multiple computational paths in neural networks. In one example, a size of memory used to perform neural layer computations is reduced by performing nodal computations in multiple batches, followed by rescaling and accumulation of nodal outputs. In another example, execution of parallel branches of neural node computations include evaluating, prior to the actual execution, the amount of memory resources needed to execute a particular order of branches sequentially and select the order that minimizes this amount or keeps this amount below a target threshold.

A system for transportation includes a vehicle having a user interface, and a robotic process automation system wherein a set of data is captured for each user in a set of users as each user interacts with the user interface, and wherein an artificial intelligence system is trained using the set of data to interact with the vehicle to automatically undertake actions with the vehicle on behalf of the user.