Abstract: A document classification method includes: obtaining a document; extracting document keywords and a document abstract from the document; determining, according to the document keywords and the document abstract, a first classification label of the document; receiving a second classification label of the document, the second classification label being determined according to the document keywords, the document abstract, and the first classification label; obtaining a classification efficiency value of the documents, the classification efficiency value indicating a confidence level of the second classification label; and determining the second classification label as a final classification label of the document if the classification efficiency value is greater than or equal to a first threshold. The document classification method described above may improve the speed of document classification by computer, thereby improving the efficiency of document classification.

Abstract: Device and method for removing artifacts in physiological measurements. The method can comprise the steps of obtaining a physiological signal of a user; obtaining corresponding motion data representative of motion of the user; determining whether the physiological signal is distorted; and if the physiological signal is determined to be distorted, identifying a noise reference and filtering the physiological signal with the noise reference.

Abstract: Device and method for removing artifacts in physiological measurements. The method can comprise the steps of obtaining a physiological signal of a user; obtaining corresponding motion data representative of motion of the user; determining whether the physiological signal is distorted; and if the physiological signal is determined to be distorted, identifying a noise reference and filtering the physiological signal with the noise reference.