Abstract: An unsupervised model evaluation computer-implemented method, medium, and system are disclosed. In one computer-implemented method, S node vectors corresponding to S nodes from N node vectors obtained by using an unsupervised model are determined, where both N and S are positive integers. A neighboring node and a non-neighboring node of each of the S nodes is determined. Based on a node vector of a first S node and the neighboring node, a similarity between the first S node and the neighboring node as a positive sample predicted value is determined. Based on the node vector of the first S node and the non-neighboring node, a similarity between the first S node and the non-neighboring node as a negative sample predicted value is determined. The unsupervised model is evaluated based on the positive sample predicted value and the negative sample predicted value.

Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for enabling blockchain-based service of process. One method includes: receiving a request generated based on a blockchain-based application for delivering a notice associated with a legal action from a serving party to another party. The serving party is determined to be a registered user of the blockchain-based application. A time that the request is received is recorded on the blockchain. If the party to be served is determined to be a registered user of the blockchain-based application, identifying one or more manners of delivering the notice based on available communication methods included in the registration information of the serving party and registration information of the party to be served. The notice to the party to be served is determined based on at least one of the one or more manners.

Abstract: The disclosure relates to technology for power supply for a voltage controller oscillator (VCO). A peak detector circuit determines the amplitude of the output for the VCO, which is compared to a reference value in an automatic gain control loop. An input voltage for the VCO is determined based on a difference between the reference value and the output of the peak detector circuit. The peak detector circuit can be implemented using parasitic bipolar devices in an integrated circuit formed in a CMOS process.

Abstract: A chip interconnection structure, a chip and a chip interconnection method. The chip interconnection structure includes a first chip and at least one second chip, where a transfer surface of the first chip and a transfer surface of the second chip are disposed oppositely, at least one conductive component is further provided between the second chip and the first chip, each conductive component includes at least one conductive member, and the conductive member is connected between a pad of the second chip and a pad of the first chip. The chip interconnection structure can allow two or more than two chips to be interconnected and to communicate at a high speed.

Abstract: The present disclosure provides load control methods, mobile platforms, and computer-readable storage media. The load control method includes: receiving a control instruction including original identification information of a load from a control device corresponding to the mobile platform; determining, based on the original identification information, a target hardware port of the mobile platform connected to the load from a plurality of hardware ports of the mobile platform; modifying the original identification information to target identification information identifiable by the target hardware port; and sending the modified control instruction to the load through the target hardware port. The mobile platform includes: a body; a power system mounted in the body to supply power; a plurality of hardware ports each configured to connect to a load; a communication interface to communicate with a control device corresponding to the mobile platform; and one or more processors to perform the load control method.

Abstract: A computer-implemented method for blockchain data storage includes generating, by one or more processing devices, a snapshot of a current state tree associated with a fixed depth Merkle tree (FDMT) during creation of a block of a blockchain, wherein the current state tree stores state information corresponding to a newest block of the blockchain; and storing, by the one or more processing devices, the snapshot of the current state tree.

Abstract: A fingerprint sensing device including a light guide cover plate, a light source, an image sensor, and a light output element is provided. The light guide cover plate includes a flat plate portion and a light entering portion. The flat plate portion has a first surface and a second surface opposite to each other. The light entering portion is located at the second surface, and has an inclined light incident surface inclined with respect to the first surface and the second surface. The light source is configured to emit a light beam. The light beam is transmitted to the light entering portion and the flat plate portion in sequence via the inclined light incident surface. The light output element is disposed on the second surface, and guides the light beam in the flat plate portion to the image sensor.

Abstract: Embodiments of the present disclosure disclose identity verification methods, apparatuses, electronic devices, and storage media. In an embodiment, an identity verification method includes: receiving an identity verification request for verifying an identity of a user; determining that the user is an inactive user based on a user service variable value; determining at least one risk level of the user based on at least one user identification method; and determining a user identity verification method based on the at least one risk level and at least one identity verification threshold corresponding to the at least one user identification method, wherein the user identity verification method is one of a strong user identity verification method or a weak user identity verification method.

Abstract: Embodiments of the present specification provide product information query methods and systems. In an embodiment, a method comprising detecting, by a distance sensor, a moving object that enters a predetermined detection range, wherein the moving object comprises a product; sending, by the distance sensor, a notification that that notifies a computer of the one or more computers to enable a query of the product; photographing, by a photographing device, an image of the product; obtaining, by a computer, the image from the photographing device; extracting, by the computer and from the image, image features of the product; performing, by the computer, the query to obtain product information based on the image features; and displaying, by a display, the product information.

Abstract: Disclosed are a mask plate, a manufacturing method thereof, and a patterning method using the mask plate. The mask plate includes: a first opening, configured to form a first protective layer for covering a first region, the first region including a functional region and a first wiring region at a periphery of the functional region; a second opening, connected to the first opening and configured to form a second protective layer for covering a second region, the second region includes a second wiring region; and a first shielding strip portion, the first protective layer and the second protective layer are connected and belong to a same film layer, the first shielding strip portion is configured to form a first groove region, the first groove region corresponds to a bonding region, and the second wiring region is on one side of the bonding region away from the first wiring region.

Abstract: A computer-implemented method for blockchain data storage includes sending a marker message from a first blockchain node in a first shard of a blockchain network to a second blockchain node in a phosphor of the blockchain network; receiving a marker block from the second blockchain node, wherein the marker block is associated with the phosphor and includes the marker message; creating a first block associated with the first shard that includes a block associated with the phosphor that immediately precedes the marker block; creating a second block associated with the first shard that includes the marker block; generating, during creation of the second block associated with the first shard, a snapshot of state information corresponding to a newest block associated with the first shard; and storing the snapshot of the state information.

Abstract: A data processing computer-implemented method, medium, and system are disclosed. In one computer-implemented method, a target coordination server is selected from multiple coordination servers based on performance information of server clusters, where the multiple coordination servers respectively belong to multiple server clusters. A data processing request is sent to the target coordination server, so that a server cluster that the target coordination server belongs to can prioritize handling of the data processing request.

Abstract: A voltage converter for medical devices includes a switch capacitor converter core including a plurality of power transistor switches configured to receive an input voltage and output an output voltage; a switch driver connected with the switch capacitor converter core and configured to turn on corresponding power transistor switches in the switch capacitor converter core so as to supply power to a load receiving the output voltage; a switch signal router connected with the switch driver and configured to selectively transmit signals required by the switch driver; a gain selection decoder connected with the switch signal router; a gain controller connected with the gain selection decoder, the gain selection decoder being configured to decode gain selection instructions transmitted from the gain controller; an input adjusting device connected with the gain controller and configured to receive the input voltage and a reference voltage, to indicate relationship between the input voltage and the reference voltage

Abstract: A stretchable display panel and a display method thereof, and a display device are provided. The stretchable display panel includes pixel units arranged in an array, compensating pixels located at a gap between the plurality of pixel units, a stretch detecting member corresponding to the compensating pixels and a control unit respectively and electrically connected with the stretch detecting member and the compensating pixels. The stretch detecting member includes a material that is capable of generating an electrical detecting signal when being stretched, so that the stretch detecting member is capable of generating a detecting signal when being stretched; the control unit is configured to determine stretch information of the stretchable display panel according to the detecting signal generated when the stretch detecting member is stretched, and supply a compensating voltage to the compensating pixel according to the stretch information.

Abstract: A transaction indicator monitoring computer-implemented method, medium, and system are disclosed. One computer-implemented method includes obtaining sampling sequences of a transaction indicator of transaction data under multiple sets of transaction dimension values, each set of transaction dimension values corresponding to one sampling sequence, a first sampling sequence including values of the transaction indicator at a predetermined quantity of sampling points under a first set of transaction dimension values, and a value of the transaction indicator at a target sampling point is a first actual value. An estimated value of the transaction indicator at the target sampling point in the first sampling sequence is calculated based on the first sampling sequence and compared with the first actual value, to determine whether the transaction indicator at the target sampling point under the first set of transaction dimension values corresponding to the first sampling sequence is abnormal.

Abstract: Embodiments of counter-stress structures and methods for forming the same are disclosed. The present disclosure describes a semiconductor wafer including a substrate having a dielectric layer formed thereon and a device region in the dielectric layer. The device region includes at least one semiconductor device. The semiconductor wafer further includes a sacrificial region adjacent to the device region, wherein the sacrificial region includes at least one counter-stress structure configured to counteract wafer stress formed in the device region.

Abstract: A method for calibrating a light smart watch includes: providing an FPC soft board under a dial, a size of the FPC soft board matching a size of the dial, the FPC soft board is divided into a plurality of partitions, each partition is insulated from other partitions, and each of watch hands and each partition form a capacitor in turn when the watch hands run; detecting a capacitance change amount of each partition, determining positions of partitions where the watch hands are currently located, and determining a current time indicated by the watch hands, according to the positions of partitions where the watch hands are currently located; comparing the current time indicated by the watch hands with a current time of a mobile terminal to determine a time error; and adjusting the watch hands, according to the time error to run in sync with the time of the mobile terminal.

Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for storing blockchain data. One of the methods includes receiving a plurality of blocks from a blockchain node in the blockchain network; for each of the plurality of blocks: determining a first number of blockchain nodes that store a dataset divided from an error correction coding (ECC) encoded version of the block and a second number of blockchain nodes that store a dataset comprised of redundant bits divided from the ECC encoded version of the block; calculating a priority value of the block based on the first number and the second number; and encoding at least a portion of the plurality of blocks using ECC to generate a plurality of encoded blocks based on the priority value.

Abstract: The present specification provides identity verification and account information updating methods and apparatuses. One method comprises: in response to receiving a request for updating an account, obtaining personal information and information of a network environment associated with an operator of the account; performing risk identification of the personal information to obtain a first risk identification result; performing risk identification of the information of the network environment to obtain a second risk identification result, wherein the second risk identification result identifies security risks associated with the network environment the operator operates in; selecting an identity verification method based on the first risk identification result and the second risk identification result; and performing identity verification of the operator based on the identity verification method.