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118results about How to "Improve tuning efficiency" patented technology

User session recommendation method based on deep neural network

The invention discloses a user session recommendation method based on a deep neural network. The method comprises steps as follows: collecting shopping website log data, reconstructing commodity webpages browsed by user sessions, and generating a training set D', a cross validation set V' and a test set T'; extending all the sessions so as to generate a training set D, a cross validation set V and a test set T; setting neutral network parameters and generating a deep neutral network model; training a neutral network and performing parameter adjustment with an automatic parameter adjusting framework based on the genetic algorithm; calculating the correct rate of the model on the test set T; calculating a path compression ratio. With the adoption of the method, the recommendation accuracy can be significantly improved, the problem about difficulty in neutral network parameter adjustment is solved, the algorithm for automatically adjusting network related configuration is provided on the basis of the genetic algorithm, and the network parameter adjustment efficiency is greatly improved. The method is applicable to online shopping websites to recommend commodities which users may buy to the users while the online shopping websites interact with the users.
Owner:ZHEJIANG UNIV

Self-calibration control device of warp knitting machine yarn guide bar

ActiveCN104345689ARealize static auto-calibrationRealize dynamic self-calibrationProgramme controlComputer controlControl systemImaging algorithm
The invention provides a self-calibration control device of a warp knitting machine yarn guide bar and belongs to the technical field of mechanical-electrical integration. The problem that needling is required to be frequently calibrated by human eyes in the warp knitting machine yarn guide bar which is electronically and transversely driven is solved. The needling camera time of the yarn guide bar is determined by a coder (2) which is arranged on the main shaft of a warp knitting machine and is interconnected with a terminal control unit (1); relative position images of a warp knitting machine yarn guide needle and a slot needle positioned in the same plane at the needling time are acquired through a high-definition camera (3); after being processed by an image algorithm processing module (4), a calibration instruction of the yarn guide bar is given by a wireless data transmission transmitting module (5), and a wireless data transmission receiving module (6) which can be conveniently plugged into a warp knitting main control system receives the instruction and transmits the instruction to the main control system to calibrate the warp knitting machine yarn guide bar. Automatic calibration control on the yarn guide bar in two states, i.e. a halt state and a start state, can be realized without labor participation, and the control precision and the intelligence degree of a warp knitting machine numerical control system can be obviously improved.
Owner:JIANGNAN UNIV

Novel multifunctional mobile phone middle frame polishing-grinding machine

The invention provides a novel multifunctional mobile phone middle frame polishing-grinding machine. A Y-axis movable platform is provided with a water spraying device and five sets of clamping devices, the water spraying device comprises a draining groove, a water spraying pipe and a draining pipe which are mounted on a Y-axis movable platform, a U-shaped arm is provided with six sets of polishing wheel sets, two third motors and a rotating shaft, and the six sets of polishing wheel sets are evenly mounted on the U-shaped arm through mounting seats; and the polishing wheel sets comprise polishing wheels and protective covers arranged on the polishing wheels, the rotating shaft is provided with driving gears, each mounting seat is provided with a driven gear, the driving gears are connected with the driven gears through belts, the polishing wheels are mounted on the two sides of the driven gears correspondingly, and the third motors can drive the six sets of polishing wheel sets to dosynchronous polishing movement. The novel multifunctional mobile phone middle frame polishing-grinding machine has the advantages that dry polishing and waxing and polishing can be conducted, meanwhile, wet polishing can also be conducted, polished products are good in consistency and high in machine adjusting efficiency, the quality is ensured, the procedure is easy to control, the structure is simple, and wax adding is even.
Owner:东莞市金太阳精密技术有限责任公司

Optical calibrator for multi-barrel axis parallelism of artillery

The invention discloses an optical calibrator for the multi-barrel axis parallelism of artillery, and relates to the technical field of calibration for multi-barrel artillery. The optical calibrator comprises bullet-shaped axial lasers, a calibration assembly, a measurement assembly and a total reflection prism group, wherein the bullet-shaped axial lasers are respectively installed in chambers ofa reference barrel G0 and a measured barrel G1 of the artillery and emit laser beams which are overlapped with barrel axes of the artillery, the total reflection prism group and corresponding prismsin the calibration assembly and the measurement assembly to enable quadrangular optical paths to be coplanar, the bullet-shaped axial laser L2 emits a laser beam, the laser beam is reflected to a reticle of a focal plane of an angle measurement telescope w2 by a semi-transmitting and semi-reflective prism F to form a light spot, the non-parallelism deviation between the reference barrel and the measured barrel can be judged through comparing the overlap ratio of the light spot with a light spot, which is reflected to the angle measurement telescope w2 by an optical path, from the axial laser L1, the axis of the measured barrel is adjusted until the two light spots are overlapped, and thus the calibration for the parallelism of the two barrels is completed.
Owner:北京卓力新航科技有限责任公司 +1

Electric energy meter correction table and electric energy meter correction method

The invention discloses an electric energy meter correction table and an electric energy meter correction method. The electric energy meter correction table comprises a PC (personal computer), an electric energy meter power supply circuit, a control unit, a surface plate, two guiders, connecting terminal seats and electric energy meter clamping devices, wherein the connecting terminal seats and the electric energy meter clamping devices are mounted on the surface plate. The connecting terminal seats are disposed on the surface plate and below meter positions of electric energy meters to be measured. Each connecting terminal seat comprises a plurality of power source terminal vibrating needles connected with the electric energy meter power supply circuit and a plurality of communication terminal vibrating needles electrically connected with a communication connector of the PC. Each electric energy meter clamping device comprises a press block arranged above the meter positions and driven by an air cylinder. The guiders are arranged on the surface plate and on two sides of the meter positions. The electric energy meter correction table is disposed on a work station of an electric energy meter production line and between an initial assembling work station and a packaging work station of the production line. The electric energy meter correction table is high in correction efficiency, capable of directly setting and correcting electric energy meters on and along with the production line, production efficiency of electric energy meter correction is improved and production cost is reduced.
Owner:李刚强 +1

Method for computer aided design of microwave filter

InactiveCN102236727APrecise control of center frequencyPrecisely control bandwidthSpecial data processing applicationsComputer Aided DesignComputer science
The invention discloses a method for the computer aided design of a microwave filter. The method comprises the following steps of: 1) determining the size of a resonator according to the center frequency of the filter; 2) determining a group of standard delay amounts Gamma1, Gamma2, ..., GammaN according to the bandwidth and order N of the filter; 3) simulating a single-port network consisting ofan input port and a first-order resonator, and regulating the physical size of the first-order resonator to make the port delay characteristic of the network meets Gamma1; 4) adding a second-order resonator, and regulating the physical sizes of the first-order and second-order resonators to make the port delay of the network meets Gamma2; 5) by parity of reasoning, obtaining the physical sizes ofa half of resonators; and 6) mirroring the resonators with the regulated physical sizes to obtain the sizes of the other half of resonators to finish the design of the filter. In the method, the delay characteristic of the single-port filter is utilized, and the method has the advantages of small calculated amount and high efficiency as well as high center frequency and bandwidth setting accuracy, and is particularly suitable for the computer aided design (CAD) of the high-order microwave filter.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI

Semi-automatic chamfering machine

The invention provides a semi-automatic chamfering machine. The semi-automatic chamfering machine comprises a base frame, a bottom plate, locating plates, locking pliers, a work table, micrometers, a motor, a movable sliding plate and an air cylinder, wherein the bottom plate is arranged on the base frame; a sliding rail fixing plate is installed on the bottom plate, a second sliding rail is arranged on the sliding rail fixing plate, a plurality of second sliding blocks are arranged on the second sliding rail, the movable sliding plate is connected to the second sliding rail through the second sliding blocks, a first sliding rail is arranged on the movable sliding plate, a plurality of first sliding blocks are arranged on the first sliding rail, and the air cylinder is arranged on one side of the first sliding rail; the motor is arranged on the left side of the base frame and is connected to the movable sliding plate through a pull rod; the work table is arranged on the first sliding blocks, the front side of the work table is connected to a micrometer fixing frame, and the micrometer fixing frame is provided with the micrometers; and a PLC is arranged inside the base frame. Compared with the prior art, the semi-automatic chamfering machine has the beneficial effects that propulsive assistance of the air cylinder replaces manual thrust, and the micrometers limit a jig so that accuracy control can be realized.
Owner:湖南晶讯光电股份有限公司

Hyper-parameter determination method and device, computer equipment and storage medium

The embodiment of the invention discloses a hyper-parameter determination method and device, computer equipment and a storage medium. According to the embodiment of the invention, the method comprisesthe steps: obtaining a hyper-parameter group of at least one to-be-trained model, wherein the to-be-trained model belongs to a target model type, the hyper-parameter group comprises hyper-parametersof at least one dimension, and the hyper-parameters of each dimension indicate model structure features of the to-be-trained model under each dimension; distributing the target hyper-parameter group to a target hyper-parameter evaluation node in the distributed cluster; through the target hyper-parameter evaluation node, adopting the target hyper-parameter set to perform model training on a targetto-be-trained model, wherein the target to-be-trained model is a to-be-trained model corresponding to the target hyper-parameter set; performing model evaluation on the trained model to obtain a hyper-parameter evaluation result of each hyper-parameter group; based on the hyper-parameter evaluation result, selecting an optimal hyper-parameter group of the target model type from the hyper-parameter groups. According to the scheme, the hyper-parameters can be efficiently determined by improving the hyper-parameter tuning efficiency.
Owner:TENCENT TECH (SHENZHEN) CO LTD

Global occlusion self-adaptive pedestrian training/recognition method, system and device and medium

The invention provides a global occlusion self-adaptive pedestrian training / recognition method, system and device and a medium. The pedestrian training method comprises the steps of receiving a training data set; extracting an attribute feature map of each picture; fusing all attribute feature maps of same pedestrians to obtain fused features of a plurality of pedestrians; extracting local features from the plurality of attribute feature maps and extracting global features from the fusion features of the plurality of pedestrians; extracting attention of the local features according to the local features and the global features so as to calculate features after attention enhancement of the local features used for representing the local features and features after shielding of the picture shielding information of the global features used for representing the global features; and performing loss calculation on the features after the attention of the local features is enhanced and the features after the picture shielding information of the global features is shielded. According to the invention, the model error caused by manual operation deviation is reduced; the problem that common model evaluation indexes cannot guide engineering threshold setting is solved.
Owner:WINNER TECH CO INC

Axial fine adjustment and tensioning shaft

The invention provides an axial fine adjustment and tensioning shaft, and belongs to the technical field of testing tools. The axial fine adjustment and tensioning shaft comprises a tensioning assembly, an axial fine adjustment assembly and a motor transmission shaft. The tensioning assembly comprises a tensioning hand wheel, a tensioning mandrel, a guide taper sleeve, a telescopic taper sleeve, a loosening cylinder, a tensioning mandrel front supporting seat and a tensioning mandrel rear supporting seat. The axial fine adjustment assembly comprises an axial fine adjustment hand wheel and a fine adjustment mandrel. The tensioning assembly is connected with the axial fine adjustment assembly. The fine adjustment assembly is connected with the motor transmission shaft. The tensioning mandrel and the fine adjustment mandrel are coaxially sleeved together and can synchronously generate axial displacement, the fine adjustment mandrel is connected with the axial fine adjustment hand wheel, the tensioning hand wheel is connected with the tensioning mandrel, and the loosening cylinder is connected with a spring pull ring arranged on the tensioning mandrel in a sleeving manner. The outer portion of the tensioning mandrel is sleeved with the guide taper sleeve, a loosening movable plate is arranged on the outer portion of the loosening barrel and is connected with the spring pull ring, and the telescopic taper sleeve is connected with the loosening cylinder. One end of the fine adjustment mandrel penetrates into and is connected with the motor transmission shaft.
Owner:GUANGDONG FXD INTELLIGENT EQUIP CO LTD

Camera parameter adjustment method and device thereof, electronic equipment and storage medium

The invention discloses a camera parameter adjustment method and a device thereof, electronic equipment and a storage medium, and relates to the technical field of computer vision, and the method comprises the steps: detecting a first image collected by a reference camera, and obtaining a first detection result; detecting a second image collected by the camera to be subjected to parameter adjustment, obtaining a second detection result, and shooting the first image and the second image in the same preset scene; and according to the first detection result and the second detection result, adjusting a first parameter of the camera to be subjected to parameter adjustment when collecting the second image to obtain a second parameter of the camera to be subjected to parameter adjustment in the preset scene. According to the method and the device, the electronic equipment and the storage medium disclosed by the invention, automatic parameter adjustment is performed on the camera to be subjected to parameter adjustment based on the result of visual detection on the image collected by the reference camera, so that the visual detection result corresponding to the image collected by the camera to be subjected to parameter adjustment can reach the best without manual participation, Therefore, the parameter adjustment efficiency of the camera is improved.
Owner:BEIJING HORIZON ROBOTICS TECH RES & DEV CO LTD

Error correction method and system for arc corner machining equipment

The invention discloses an error correction method and system for arc corner machining equipment. The arc corner equipment comprises a milling cutter, and the error correction method of the arc cornermachining equipment comprises the steps: setting initial operation parameters according to a preset machining program, wherein the initial operation parameters comprise clamping parameters, size inspection standards, the cutting direction of the cutting cutter and the correction direction; acquiring predetermined detection data in product processing, wherein the predetermined detection data comprises the actual milling diameter of the milling cutter; analyzing the detection data, and calculating correction parameters according to a predetermined correction model; distributing the correction parameters to corresponding processing equipment; correcting the machining parameters of the corresponding machining equipment according to the correction parameters; according to the machining direction and the correction direction of the machining equipment and the correction parameters, judging the abnormality of the machining equipment, so the time and labor required for machine adjustment of the machining equipment are reduced, and the machine adjustment efficiency is improved.
Owner:HONGFUJIN PRECISION ELECTRONICS ZHENGZHOU

Head-up display adjustment and calibration method and special apparatus for applying the method

The invention discloses a head-up display adjustment and calibration method, and a special apparatus for applying the method. The head-up display adjustment and calibration method comprises: the step 1: fixing a datum lens before a head-up display device which does not change a CRT kinescope, wherein the datum lens is a telescope with a reticle or a borescope and a test frame aligns to the datum lens when the head-up display device is energized and displays the test frame; the step 2: deenergizing the head-up display device, and dismounting and changing the CRT kinescope in the head-up display device; and the step 3: energizing the head-up display which changes the CRT kinescope, and adjusting the position of the CRT kinescope until that the datum lens aligns to the test frame. The head-up display adjustment and calibration method takes the telescope or the borescope as the external reference to dismount and change the CRT kinescope in the head-up display device, that is, before dismounting, the test frame displayed on the glass through the old CRT kinescope is taken as the datum; and after a new CRT kinescope is exchanged and the reticle of the datum lens is the datum target position so that the difficulty in precise adjustment and calibration of the character precision of the head-up display is reduced.
Owner:LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC

Data processing method and device, computer equipment and storage medium

The invention relates to a data processing method and device, computer equipment and a storage medium and relates to the technical field of computers, according to the embodiment of the invention, thesample data can be automatically acquired from the database; the parameter adjustment step and the model training step are executed, and the trained model can be used for executing the data processing step, so that on one hand, the automation of the data processing process is realized, the labor cost is reduced, the data processing efficiency is improved, personal errors are avoided, and the dataprocessing accuracy is improved; another aspect, exploring through an initial value, an exploring direction, a step length and the like of the hyper-parameter; determining and obtaining a target candidate value in an explored target range, and taking the target candidate value as an initial value to continue exploring; the method is advantaged in that the hyper-parameter exploration range is expanded, the process of searching the optimal hyper-parameter exploration direction is accelerated, a condition that the optimal hyper-parameter cannot be found because of improper exploration boundary setting is avoided, parameter adjustment accuracy and efficiency are improved, and integral data processing accuracy and efficiency are improved.
Owner:BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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