Abstract: A two-stage machine learning model is used to for categorization of a dataset, such as transactions. A plurality of complementary base machine learning models are used to generate initial inference results and associated measures of inference confidence from the dataset, which are collected as a meta dataset. Each of the complementary models is associated with a different part of the dataset in which it has a higher accuracy in that part than the other models. The meta dataset is provided as input to a meta machine learning model, which is trained to produce a final inference result, and a confidence score model, which is trained to produce a confidence score associated with the final inference result.

Abstract: A computing device obtains an image depicting an image of a user's face. The computing device identifies one or more regions in the image depicting skin of the user and generates a skin mask. A skin tone of the user's face is predicted and the skin mask is populated according to the predicted skin tone. The computing device defines feature points corresponding to facial features on the user's face and extracts pre-defined facial patterns matching facial features depicted in the image. The extracted pre-defined facial patterns are inserted into the skin mask based on the feature points and a hair mask identifying one or more regions depicting hair of the user is generated. The computing device extracts a hair region depicted in the image of the user based on the hair mask and inserts the hair region on top of the skin mask to generate a face chart.

Abstract: This application provides an exception locating method includes: A first device receives a first exception signal which changes abruptly from a first communication signal when the first communication signal passes through a location of an exception on a first line. The first device receives exception alarm information which is sent by the second device after the second device receives a second exception signal, the second exception signal is a signal that changes abruptly from a second communication signal when the second communication signal passes through the location of the exception. The first device determines the location of the exception based on a first time interval, where the first time interval is an interval between time at which the first exception signal is received and time at which the exception alarm information is received.

Abstract: Disclosed is a method for testing and evaluating a short-circuit withstand capability of a press-pack power component.

Abstract: An opening and closing device for a curtain mounted on a guiding part, the guiding part is provided with the curtain; the opening and closing device is used for driving automatically the opening and closing of the curtain; the opening and closing device includes a mainframe and a connecting mechanism. The mainframe includes a shell, a driver, and a driving wheel; the driving wheel and the driver are mounted in the shell, the driver drives the driving wheel to rotate. The connecting mechanism includes a hanging piece and a bracket; a first end of the bracket is inserted into the shell, the hanging piece is movably connected with a second end of the bracket and hung on the guiding part; the hanging piece can be moved vertically relative to the bracket so that the driving wheel is attached closely to the outer wall of the guiding part.

Abstract: A computing device obtains an image depicting an image of a user's face. The computing device identifies facial features in the user's face in the image and extracts characteristics of the facial features in the user's face in the image. The computing device predicts a skin tone of the user's face depicted in the image and generates a face chart based on the facial feature characteristics. The computing device adjusts a color of a facial region in the face chart according to the predicted skin tone and obtains lighting characteristics of the image of the user's face. The computing device adjusts one or more colors in the face chart based on the lighting characteristics of the image of the user's face.

Abstract: A method is applied to an electronic device, and includes: obtaining content copied by a user on a first page, and determining a category to which the content belongs; obtaining a category of a second page; matching the category of the content against the category of the second page; and if a matching result is not empty, displaying at least one operation option on the second page, where the at least one operation option has a function of performing an operation for the content on the second page, so that the electronic device directly performs the function after the user selects the operation option.

Abstract: Embodiments of this application disclose a call method and an apparatus. In the call method, when a user does not actively select an audio device as a voice pickup device and a voice play device, after establishing a call connection to another electronic device, an electronic device selects, from available audio devices, an audio device that meets a user expectation as the voice pickup device and the voice play device. According to technical solutions provided in the embodiments of this application, user experience in a call process can be improved.

Abstract: Wireless communication includes a user equipment that transmits a message to a base station that includes a preamble and a payload corresponding to the preamble in a random access procedure. A parameter is determined based on the preamble, and a de-modulation reference signal (“DMRS”) sequence that is used for transmitting the payload is generated based on the parameter.

Abstract: A steering linkage assembly includes a support member; a connecting portion rotatably arranged on the support member and connected to an external steering member; a first steering linkage; a first ball head rod provided with one end connected to a ball head at a first end of the first steering linkage and the other end connected to the support member; a second steering linkage; and a steering rotating shaft mounted at a first end of the second steering linkage and rotatably connected to the support member. A rotating centerline of the steering rotating shaft is not parallel to that of the connecting portion. An included angle is formed between a connecting line of ball head centers of the first and second ball head rods and a connecting line of a rotating center of the steering rotating shaft and a ball head center of the third ball head rod.

Abstract: The memory device includes a memory block with an array of memory cells. The memory device also includes control circuitry that is in communication with the memory cells. The control circuitry is configured to program a group of the memory cells in a programming operation that does not include verify to obtain a natural threshold voltage (nVt) distribution, calculate an nVt width of the nVt distribution, compare the nVt width to a threshold, and identify the memory block as being vulnerable to cross-temperature read errors in response to the nVt width exceeding the threshold.

Abstract: Voice-controlled devices that include one or more speakers for outputting audio. In some instances, the device includes at least one speaker within a cylindrical housing, with the speaker aimed or pointed away from a microphone coupled to the housing. For instance, if the microphone resides at or near the top of the cylindrical housing, then the speaker may point downwards along the longitudinal axis of the housing and away from the microphone. By pointing the speaker away from the microphone, the microphone will receive less sound from the speaker than if the speaker were pointed toward the microphone). Because the voice-controlled device may perform speech recognition on audio signals generated by the microphone, less sound from the speaker represented in the audio signal may result in more accurate speech recognition, and/or a lesser need to perform acoustic echo cancelation (AEC) on the generated audio signals.

Abstract: A chip-level software and hardware cooperative relay protection device is provided. The device includes: a control chip, wherein a first control unit, a second control unit, and multiple logic circuits are integrated on the control chip; and the logic circuits perform microsecond-level rapid calculation on electrical signals of a protected electrical device, obtain fault feature parameters of the protected electrical device are and transmit same to the first control unit, then perform millisecond-level real-time protection logic determination according to the fault feature parameters of the protected electrical device to obtain relay protection results of the protected electrical device, and protect the protected electrical device by controlling an external relay according to the relay protection results.

Abstract: A hole protection system and a method for coal seam slotting and fracturing combined drainage. The system includes a hydraulic slotting subsystem, a hydraulic fracturing subsystem and a flexible hole protection system. The hydraulic slotting subsystem includes an ultra-high pressure water jet generating module, a drill pipe drilling tool module, an orifice sealer, a gas slag separator and a drilling rig. The hydraulic fracturing system includes an emulsion pump station, a water tank, a hole sealing device, a fracturing string and a casing. The flexible hole protection system includes a front end fixing device, a water injection support pipe, a first flexible support and a water injection connecting section.

Abstract: The present disclosure provides a fluorescence image registration method, the method includes: acquiring a fluorescence image of a biochip; selecting a preset local region of the fluorescence image; acquiring a position of a minimum value of a sum of brightness values of pixels in a first direction and a second direction, and obtaining pixel-level registration points; dividing the pixel-level registration points into non-defective pixels and defective pixels; if the fluorescence image meets the preset standard, correcting positions of the defective pixels according to positions of the non-defective pixels; acquiring a position of a center of gravity of image points of fluorescent molecules according to a center of gravity method; fitting straight lines in the first direction and the second direction respectively according to the position of the center of gravity; and acquiring boundary points of the fluorescence image and calculating the positions of the boundary points.

Abstract: A composite solution for enhancing induced disease resistance of lentinan (LNT) to a plant, a preparation method of the composite solution, and a method for enhancing induced disease resistance of LNT to a plant are provided. The composite solution for enhancing induced disease resistance of LNT to a plant includes: an LNT-containing solution and an SPc-containing solution, where SPc is a dendritic macromolecule functionalized by an amino functional group, and has a structural formula shown in formula I, where n=1 to 100. An LNT/SPc complex is produced in the composite solution. SPc spontaneously combines with LNT through hydrogen bonding, such that an agglomerate structure formed by LNT in an aqueous solution is broken and reduced to a nano-scale particle size, and a spherical particle is produced, which can significantly reduce a contact angle of the LNT aqueous solution, and promote the distribution and diffusion of LNT.

Abstract: Disclosed are a glass ceramic composition, a preparation method and application thereof. The glass ceramic composition according to the present application includes: 58% to 72% of SiO2; 0% to 4% of Al2O3; 0% to 5% of Na2O; 3% to 8% of K2O; 8% to 17% of Li2O; 2.5% to 5% of P2O5, 0% to 2% of MgO, 0% to 2.5% of B2O3; 0% to 5% of ZnO; and 0% to 3% of ZrO2. It is possible to prepare such lithium metasilicate glass ceramic with a crystal phase of lithium metasilicate, a crystallinity of greater than 50%, a grain size of 30 nm to 60 nm and a hardness of 500 kgf/mm2 to 590 kgf/mm2. The composition does not require an introduction of a high proportion of zirconia content, and can be ground to a thickness of 0.2 mm without edge collapse.

Abstract: A high-resolution handheld OCT imaging system related to the optical imaging field solves the issues of handheld OCT systems with low resolution and the inability to measure the skin's stratum corneum thickness accurately. Through adopting the visible wavelength band of supercontinuum laser as the light source, mainly applying reflectors instead of lenses in the OCT system, and replacing fiber propagation with optical propagation in free space in the interference optical paths, to significantly reduce dispersion loss in the axial resolution and improve the axial resolution of OCT systems. The filter, attenuator, grating, camera, and other components are separated from the handheld module through modular design to reduce the handheld terminal's size and weight and realize the system construction. The invention improves the axial resolution, obtains the thickness information of whole-body skin's stratum corneum, and provides technical approaches for skin diagnosis and related medicine development.