公开(公告)号：US11783227B2

公开(公告)日：2023-10-10

申请号：US16998616

申请日：2020-08-20

Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Xingjian Li ,  Haoyi Xiong ,  Jun Huan

IPC: G06N20/00 ,  G06N3/08 ,  G06F11/34 ,  G05B13/04 ,  G06F18/214

CPC classification number: G06N20/00 ,  G05B13/042 ,  G06F11/3452 ,  G06F18/214 ,  G06N3/08

Abstract: A method, apparatus, device and readable medium for transfer learning in machine learning are provided. The method includes: constructing a target model according to the number of classes to be achieved by a target task and a duly-trained source model; obtaining a value of a regularized loss function of the corresponding target model and a value of a cross-entropy loss function of the target model, based on sets of training data in a training dataset of the target task; according to the value of the regularized loss function and the value of the cross-entropy loss function corresponding to each set of training data, updating parameters in the target model by a gradient descent method to implement the training of the target model. The above technical solution avoids excessive constraints on parameters in the prior art, thereby refraining from damaging the training effect of the source model on the target task.

公开(公告)号：US20180189385A1

公开(公告)日：2018-07-05

申请号：US15858570

申请日：2017-12-29

Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Xingwu Sun ,  Xingjian Li

IPC: G06F17/30 ,  G06F17/27

Abstract: The present disclosure discloses a method and a device for locating an answer based on question and answer, in which the method includes: receiving a query sentence; parsing the query sentence, to generate a semantic parse tree corresponding to the query sentence; matching the semantic parse tree with a pre-established matching base, to obtain an alignment probability between each of candidate answers in the pre-established matching base and the semantic parse tree; and determining a final answer according to the alignment probability.

公开(公告)号：US10706090B2

公开(公告)日：2020-07-07

申请号：US15858570

申请日：2017-12-29

Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Xingwu Sun ,  Xingjian Li

IPC: G06F7/00 ,  G06F16/00 ,  G06F16/33 ,  G06F16/242 ,  G06F16/2457 ,  G06F40/30 ,  G06F40/205 ,  G06F40/289

Abstract: The present disclosure discloses a method and a device for locating an answer based on question and answer, in which the method includes: receiving a query sentence; parsing the query sentence, to generate a semantic parse tree corresponding to the query sentence; matching the semantic parse tree with a pre-established matching base, to obtain an alignment probability between each of candidate answers in the pre-established matching base and the semantic parse tree; and determining a final answer according to the alignment probability.