METHOD FOR ENHANCED SAMPLING FROM A PROBABILITY DISTRIBUTION

    公开(公告)号:US20230342644A1

    公开(公告)日:2023-10-26

    申请号:US17729585

    申请日:2022-04-26

    IPC分类号: G06N7/00

    CPC分类号: G06N7/005

    摘要: A computer-implemented method including: receiving data including a probability distribution of a dataset or a multivariate probability distribution about a target, the probability distribution relating to a plurality of discrete random variables; providing a tensor codifying the probability distribution such that each configuration of the plurality of discrete random variables has its respective probability codified therein; encoding the tensor into a tensor network in the form of a matrix product state, where an external index of each tensor of the tensor network represents one discrete random variable of the plurality discrete random variables, and an internal index or internal indices of each tensor of the tensor network represents correlation between the tensor and the corresponding adjacent tensor of the tensor network; and computing at least one moment of the probability distribution by processing the tensor network for sampling of the probability distribution.

    FERMIONIC TENSOR MACHINE LEARNING FOR QUANTUM CHEMISTRY

    公开(公告)号:US20240177809A1

    公开(公告)日:2024-05-30

    申请号:US18087779

    申请日:2022-12-22

    IPC分类号: G16C10/00 G06N3/091 G06N10/20

    CPC分类号: G16C10/00 G06N3/091 G06N10/20

    摘要: A computer-implemented method includes processing a predetermined machine learning routine of a tensor network that defines layers of tensors in the routine, which is adapted for a regression problem of fermionic systems that are molecules or chemical reactions. Each tensor of the tensor network of the predetermined machine learning routine is converted into a parity preserving tensor. A sign swap tensor is introduced in the tensor network at each crossing of legs of different tensors in the tensor network. Thus, implementing anticommutation fermionic operator; inputting a first many-body problem modeling a first fermionic system in the processed predetermined machine learning routine, the first fermionic system being a molecule or a chemical reaction; and outputting from the processed predetermined machine learning routine at least one parameter for the first fermionic system after having inputted the first many-body problem. At least one parameter is inferred by the processed predetermined machine learning routine.

    DETERMINATION OF CONDITION OR CHARACTERISTIC OF A TARGET

    公开(公告)号:US20230341824A1

    公开(公告)日:2023-10-26

    申请号:US17729575

    申请日:2022-04-26

    IPC分类号: G05B13/02 G06N3/08

    CPC分类号: G05B13/027 G06N3/084

    摘要: A device or system configured to: receive a set of data associated with a monitored target, the set of data having N features, where N is a natural number greater than one; input the N features of the received set of data into a trained neural network for determining a condition or characteristic of the target with a plurality of sets of historical data associated with the target, each set of the plurality of sets of historical data having N features, the neural network at least having N inputs and one or more outputs, the neural network having one or more hidden layers, each hidden layer being a tensor network in the form of a matrix product operator, MPO, with a respective plurality of tensors and having a respective predetermined activation function per hidden layer or per tensor in the MPO; and input the N features into the neural network, determining a condition or characteristic of the target by processing the one or more outputs. Also, a device or system configured to train such neural network.