Tencent Technology (shenzhen) Company Limited

Ubtech Robotics Corp Ltd

Huawei Technologies Co., Limited

Advanced New Technologies Co., Ltd.

Tencent Technology Company Limited

Qi Zhao

Jun Liang

Rui Guo

Youjun Xiong

Wenhua Yu

Maocai Li

Zongyou Wang

Jianjun Zhang

Haitao Tu

Binhua Liu

Dawei Zhu

Libing Zhou

Jian Zhang

Bin Hua Liu

Jianxin Pang

Tao Yu

Qing Qin

Mao Cai Li

Kunlei Zhao

Zong You Wang

Hai Tao Tu

Da Wei Zhu

Youpeng Li

Jiawen Hu

Wenquan Shu

Lisheng Chen

Yangyu Pi

Yusi Miao

Xu Wang

Zhenzhang Yang

Hengshun Zhan

Mingwei Zou

Jingxuan Chen

Zihan Zhou

Zhiguo Chen

Ru Xiao

Wenwei Zou

Guanlin Huang

A virtual scene transformation method includes: displaying a first virtual scene picture, the first virtual scene picture comprising a first scene model in a virtual scene, and the first virtual scene picture being about the virtual scene observed by a virtual object; while the virtual scene is observed by the virtual object, displaying a scene transformation when the virtual scene meets a scene transformation condition, the scene transformation including a first stage in which the first scene model is gradually deleted, and a second stage in which a second scene model is gradually generated in the virtual scene, the second stage lagging behind the first stage; and displaying a second virtual scene picture when the scene transformation is completed, the second virtual scene picture comprising the second scene model.

Virtual scene transformation method and apparatus, device, and storage medium

Embodiments of the application provide a method and device for training a cash-return recognition model and a method and device for cash-return recognition, the training method comprises: acquiring first transaction information of a first transaction and a first cash-return label value of the first transaction; calculating a first cash-return predictive value for the first transaction, and a Q-value's label value corresponding to the first transaction information and the first cash-return predictive value; and training a Deep Q-Network (DQN) by adjusting parameters of the DQN such that an absolute value of a difference between a first Q-value's predictive value output by the trained DQN and the Q-value's label value is smaller than that between the first Q-value's predictive value output by the untrained DQN and the Q-value's label value, the first Q-value's predictive value obtained by inputting the first transaction information and the first cash-return predictive value to the DQN.

Method and device for cash advance recognition

A second blockchain system receives a first consensus message from a first blockchain system, the first blockchain system includes first nodes that provide services to at least a first account, and the second blockchain system includes second nodes that provide services to at least a second account. The first consensus message indicates a first plurality of the first nodes reaches a consensus for transferring a resource from the first account to the second account. The second blockchain system transfers the resource in the task to the second account. The transferring includes that a node in the second nodes adds the resource to the second account and generates a fourth block that records a completion of a transfer event. A second consensus message is transmitted from the second blockchain system to the first blockchain system in response to a second plurality of the second nodes completing the transfer event.

Resource transfer method and apparatus, storage medium, and computer device

Aspects of the disclosure provide methods and apparatuses for storing data. In some examples, an information processing apparatus that includes processing circuitry is provided. The processing circuitry is configured to receive data and determine a target blockchain based on an attribute associated with the data and blockchain correspondence information. The blockchain correspondence information indicates attributes associated with a plurality of blockchains. Further, the processing circuitry is configured to store a first block that is generated based on the received data in the target blockchain.

Service data storage method and apparatus, storage medium, and electronic device

The present disclosure discloses a client device having a digital signature. The client device includes processing circuitry configured to send a message to be stored in nodes after the nodes reach a consensus on the message. The message includes the digital signature of the client device. The processing circuitry obtains results from a subset of the nodes that receive the message. The results have respective digital signatures of the subset of the nodes. The nodes are in a first consensus mode for reaching the consensus on the message. After verifying the digital signatures, the processing circuitry determines whether one or more of the nodes has malfunctioned based on the results. Based on a determination that the one or more of the nodes has malfunctioned, the processing circuitry triggers the nodes to switch from the first consensus mode to a second consensus mode for reaching the consensus on the message.

Distributed system, message processing method, nodes, client, and storage medium

An apparatus including processing circuitry and a method are described. When receiving a cross-chain transaction request to transfer a resource from a first account to a second account, the processing circuitry is configured to generate a task corresponding to the first account. The task can indicate conditions for implementing events in transferring the resource. A first blockchain system provides services for the first account, and a second blockchain system different from the first blockchain system provides services for the second account. The processing circuitry transfers the resource to the second account based on the task when a first plurality of first nodes in the first blockchain system reaches a consensus on a generation event of the task and updates a task status of the task to being finished when a plurality of second nodes in the second blockchain system reaches a consensus on a transfer event of the resource.

A method for processing account information in a block chain is provided. A computer device receives identity information and a transfer request, the transfer request requesting to transfer a resource in an account to a target account, the target account being generated by a certificate center. The computer device obtains owner information of the account from the certificate center according to the transfer request. The computer device compares the identity information and the owner information. The computer device transmits an authentication request to the block chain in response to determining that the identity information and the owner information are consistent, the authentication request requesting the block chain to transfer the resource in the account to the target account.

Method and apparatus for processing account information in block chain, storage medium, and electronic apparatus

The present disclosure discloses an information storage method performed at a server. The method includes: receiving an information storage request sent by a terminal device, the information storage request carrying a first user identifier, an account address, and a to-be-stored ciphertext; performing identity authentication on a user according to a the first user identifier when receiving an information storage request sent by a terminal device, the information storage request carrying the first user identifier, an account address, and a to-be-stored ciphertext; generating a serving end serialization factor according to preset configuration information if after the identity authentication succeeds; obtaining a plurality of ciphertext fragments of the to-be-stored ciphertext according to the serving end serialization factor and the to-be-stored ciphertext; and storing the account address corresponding to the first user identifier, and respectively storing, corresponding to the account address, the plurality of ciphertext fragments into different ciphertext databases.

Information storage method, device, and computer-readable storage medium

The present disclosure discloses a distributed system and a message processing method. The distributed system includes a client and a plurality of nodes. The client includes processing circuitry that is configured to send a message including a digital signature of the client. The distributed system is in a first consensus mode for reaching a consensus on the message. The processing circuitry obtains results from a subset of the nodes that receive the message. The results have respective digital signatures of the subset of the nodes. After verifying the digital signatures of the subset of the nodes, the processing circuitry of the client determines, based on the results, whether one or more of the nodes in the distributed system is malfunctioned.

A method for processing an account in a blockchain is provided. A freezing instruction with respect to a target account is received by a computer device. A freezing lock is generated by the computer device based on the received freezing instruction, the freezing lock including a freezing lock public key. A first freezing request is generated by the computer device based on the freezing instruction and the freezing lock public key. The first freezing request is transmitted by the computer device to a device in the blockchain. The first freezing request is a request based on which the target account is frozen by using the freezing lock and resource transfer of the target account is denied.

Method and apparatus for processing account in blockchain, storage medium, and computer device

Aspects of the disclosure provide methods and apparatuses for storing service data. In some examples, an apparatus for storing service data includes processing circuitry. The processing circuitry receives service data of a user and determines, in a plurality of blockchains, a target blockchain according to a user attribute of the user. Based on the service data and an eigenvalue of a block header of a first block in the target blockchain, the processing circuitry generates a second block in the target blockchain. The first block is a previous block of the second block. The second block is used for recording the service data.

An electronic bill management method performed in an electronic bill management system is provided. A bill issuance request of a first user including original bill information is received. A first bill account corresponding to the first user is generated based on the original bill information, and account information of the first bill account is stored to an account table in the electronic bill management system. A second block is generated based on the bill issuance request, the first bill account, and a block header eigenvalue of a first block in a block chain in the electronic bill management system. The first block is a previous block of the second block in the block chain, and a bill issuance event of the first user is recorded based on the second block. An issuance success message is transmitted to the first user, the issuance success message including the first bill account.

Electronic bill management method, apparatus, and storage medium

The present disclosure provides a chassis comprising a frame, two hanging units symmetrically provided at both sides of the frame, and a front guiding wheel and a rear universal wheel provided below the frame, wherein each of the hanging units comprises a mounting rack fixedly connected to the frame, a hanging rack slidably connected to the mounting rack, and a driving wheel rotatably connected to the hanging rack, and the front guiding wheel is provided with a first driving motor, and the driving wheel of each hanging unit is driven by a second driving motor, and wherein a closed loop speed control system is formed between the first driving motor and both second driving motors, such that a rotational angle of the front guiding wheel is adjustable via the first driving motor when revolving speeds of both second driving motors are changed.

Chassis with wheels

This application discloses a node device operation method, a work status switching apparatus, a node device, and a medium, and relates to the field of network technologies. The method includes: receiving voting requests of a plurality of node devices, a quantity of the plurality of node devices being greater than half a quantity of node devices in a system; obtaining cycle length information and latest log indexes from the voting requests of the plurality of node devices if a current node device operates in a leader state; and switching a current work status from the leader state to a follower state or a candidate state if all the cycle length information in the voting requests of the plurality of node devices is greater than cycle length information of the current node device and all the latest log indexes in the voting requests of the plurality of node devices are not less than a latest log index of the current node device. This application enables that a first sub-cluster and a second sub-cluster can be combined into one system to work together, thereby improving the operational reliability of the system.

Node device operation method, work status switching apparatus, node device, and medium

This application relates to a shared data recovery method performed at a first node of a data sharing system. The first node obtains a first eigenvalue of a first node after receiving a recovery request carrying a first block height; broadcasts the first eigenvalue to at least one second node and recovery indication information to the at least one second node. After determining, based on the first eigenvalue and a plurality of second eigenvalues, that data in shared data stored by all nodes of the data sharing system is consistent, the first node recovers data within a range of the first block height in the shared data after receiving a preset quantity of a plurality of pieces of recovery indication information, thereby ensuring consistency and security of data included in a block, and reducing pressure on a node of the data sharing system to store the shared data.

Growing community of inventors

Shenzhen, China

Qi Zhao