Sampled Softmax with Random Fourier Features

    公开(公告)号:US20210019654A1

    公开(公告)日:2021-01-21

    申请号:US16931862

    申请日:2020-07-17

    Applicant: Google LLC

    Abstract: Systems and methods for low bias negative sampling of classes according to the sampled softmax method are described herein. The systems and methods can include training a machine-learned model for classifying inputs into one or more classes of a plurality of classes, each of the plurality of classes having an associated class embedding in a plurality of class embeddings. The systems and methods can include selecting, by the one or more computing devices, one or more negative classes from the plurality of classes based at least in part on a probability distribution approximating a softmax distribution, wherein the probability distribution is determined based at least in part on a Random Fourier Features map.

    Federated Learning with Only Positive Labels

    公开(公告)号:US20210326757A1

    公开(公告)日:2021-10-21

    申请号:US17227851

    申请日:2021-04-12

    Applicant: Google LLC

    Abstract: Generally, the present disclosure is directed to systems and methods that perform spreadout regularization to enable learning of a multi-class classification model in the federated setting, where each user has access to the positive data associated with only a limited number of classes (e.g., a single class). Examples of such settings include decentralized training of face recognition models or speaker identification models, where in addition to the user specific facial images and voice samples, the class embeddings for the users also constitute sensitive information that cannot be shared with other users.

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