102results about How to "Reduce the probability of false positives" patented technology

A method and system for generating a bloom filter by mapping into respective groups each of a plurality of initial keys according to a first hash function and mapping each group hashed key into a bloom filter using k respective hash functions.

The application relates to a network abnormal data detection method and system, computer equipment and a storage medium. The method comprises the following steps: receiving access request data sent bya client; searching for historical access request data corresponding to a user session identifier in the access request data; acquiring a header string of the access request data; performing word segmentation processing on the header string according to a preset step length to obtain a participle set; acquiring a participle weight matrix according to the historical access request data and the participle set; inputting the participle weight matrix into an abnormal data detection model to obtain data abnormal probability; and judging whether abnormal data exist in the header string or not according to the data abnormal probability. Through adoption of the method, the problems of missing and false reporting of network attacks in a website attack detection process can be avoided.

A printing defect detection method based on a flexible template registration comprising the following steps: adopting a rigid registration for initial positioning; using a training sample subjected to rigid initial registration as well as overall similarity measure and coordinate difference degree of all pixels of a standard image as an optimization goal to acquire a flexible registration image from the standard image to the training sample; obtaining a high-value image and a low-value image by studying a training sample set subjected to flexible registration; and finally determining whether the grayscale and/or the color of all images to be detected exceed(s) the value range of high and low template or not so as to obtain a defect image. The method can ensure the image detection accuracy while maintaining tolerance on destabilizing factors such as deformation, so that not only can be the misinformation probability of machine vision inspection reduced, but also the risk of leakage waste can be reduced, which is greatly conducive to improving the detection accuracy.

The automation testing system of analogizing infra-red telecontroller includes an infra-red telecontrol software sub-system and an infra-red telecontrol hardware sub-system. The infra-red telecontrol software sub-system comprises a script recording module, an interface allocating module and a script execution module. The infra-red telecontrol hardware sub-system comprises an interface instruction receiving unit with a chip for receiving interface control instruction and an infra-red instruction transmitting unit with a signal amplifier and an infra-red transmitter capable of modulating and transmitting infra-red signals. The automation testing method includes: recording script document, allocating interface, executing script document, analogizing digit signal into infra-red signal, outputting instruction wave shape and transmitting infra-red signals. Advantage: increased working efficiency of a person operating buttons and saved time and raised testing efficiency.

The invention relates to a device and a method for automatically testing remote control function, in which the device comprises a storage unit, a remote control emitting module, a remote control receiving module and a processing module. The method comprises the following steps: loading a remote control command code sequence constituted by one or more than one remote control command codes; storing the sequence into the storage unit; analyzing gradually and emitting each of the remote control command codes, and receiving the emitted remote control command codes; comparing the emitted and received remote control command codes, and judging whether the emission is correct. The technical proposal of the invention can test the remote control functions of a plurality of devices and has the commonality, thus reducing the testing cost. Furthermore, the method adopting automatic test can emit the remote control command code sequence repeatedly, thus achieving the remote control pressure strength test to a more deep level, reducing fatigue of person keystroke, and improving testing efficiency. The times and sequences of the remote control command code test can be established before testing, thus reducing wrong measurement rate.

The invention relates to the research for virus antibody and provides a preparation for PRRSV-N-IgY antibody and application thereof in detecting PRRSV. The preparation for antibody comprises the steps of preparing antigen by amplifying N genes on protein gene sequence PCR of PRRSV-N and extracting animal immunity and specific yolk immunity globulin. By using the recombined PRRSV-N protein of an antigen immunity layer, the specific PRRSV-N-IgY antibody is prepared. The prepared specific PRRSV-N-IgY antibody can be applied to detecting IFA of PRRSV. Compared with the antibody of animals such as rabbit, rat, and the like, IgY has stable physical property and can obviously decrease the occurrence rate of false positive without activating mammal complement, without combining with mammal Fc receptor or germ and without nonspecific reaction with RF (rheumatoid factors).

The invention relates to a multi-path slow frequency hopping signal anti-interference processing system which comprises a shunt demodulation unit, a unique code capturing unit, a power deciding unit, a data processing unit and a decoding unit. According to the characteristics of the slow frequency hopping system, the system captures all service hops, judges the power magnitudes of the service hops, detects whether interference exists in received signals or not according to the capture result and the power judging result of each hop, sets data of the service hops with interference to be zero, and decodes phase-adjusted base band demodulation signals through the LDPC decoding method so that it can be ensured that decoding can still be correctly conducted under the condition that interference exists and the anti-interference capacity of the system can be improved; the system accumulates correlation values of multiple service hops within a time slot in the service hop related capturing process and calculates phase errors of the time slot according to the accumulated correlation values, and therefore the time slot phase capturing probability is greatly increased.

The invention provides an antenna test method and system and a wireless terminal, and relates to the field of antennae. The antenna test method and system and the wireless terminal can reduce the test error rate. The method is applied to the wireless terminal. The wireless terminal comprises an antenna and a test circuit, wherein the antenna is electrically connected with one end of the test circuit, and test equipment outside the wireless terminal is electrically connected with the other end of the test circuit. The method comprises the steps that the test circuit receives test signals sent by the test equipment and transmits the test signals to the antenna, and the test circuit receives reflected signals which are reflected by the antenna and correspond to the test signals and transmits the reflected signals to the test equipment so that the test equipment can determine parameters of the antenna according to the reflected signals. The antenna test method and system and the wireless terminal are applied to the antenna test technology.

The invention discloses a method for yolk antibody-based enzyme-linked immunoadsordent assay (ELISA) detection of turtle systemic sepsis spherical viruses. The method is characterized by comprising the following steps of 1, adding 0.1 nanograms per microliter of turtle systemic sepsis spherical virus antigens into a polystyrene 96-hole reaction plate according to a ratio of 100 microliters per hole, carrying out pre-coating, and carrying out blocking by a bovine serum albumin blocking liquid, 2, adding turtle systemic sepsis spherical virus yolk antibodies diluted according to a certain ratio into each one of holes, and adding horseradish peroxidase-marked goat anti-chicken IgG and an o-phenylenediamine substrate solution into each one of the holes for a color reaction, and 3, reading absorbance values at the wavelength 492 nanometers of all the holes by an ELISA device, and when the absorbance value of the detected hole is more than 2.1 times of an average absorbance value of a negative control hole, determining that the detected result is positive. The method has the advantages of high stability, high specificity, high sensitivity, small immunity interference, and low background signal-noise ratio.

The invention discloses semi-automatic interchange equipment for testing electrical performance and a method for testing electrical performance. The device comprises a chassis, a quick product changing mechanism, a quick top needle plate changing mechanism and a journey-monitored pressing block mechanism; the quick product changing mechanism and the quick top needle plate changing mechanism are installed on the chassis, the journey-monitored pressing block mechanism is installed at the bottom of the quick top needle plate changing mechanism and above the quick product changing mechanism. According to the equipment, multiple different-form pogo pin sockets can be tested by the same equipment, the interchange compatibility of the product is greatly improved, and the manual intervention and the misdetection rate are reduced; meanwhile the side of the journey-monitored pressing block mechanism is marked with scales, the journey can be monitored when the top needle plate and the pressing block are laminated, the testing accuracy is ensured, the testing efficiency is greatly improved, the visual measurement error caused due to manual visual measurement on the site is reduced and the labor cost is further saved.

The invention provides a preparation method and application of an electrode for detecting a transgenic CaMV35S promoter. The method includes the steps of: preparation of a reduced graphene oxide / gold nanocomposite RGO / Au; preparation of a silicon @ cadmium telluride nanocomposite Si@CdTe; preparation of a probe 1 (Probe 1) on an ITO electrode; modification of a target DNA (t-DNA) CaMV 35S promoter onto the probe 1 (Probe 1); and modification of a probe 2 (Probe2) onto the target DNA (t-DNA) CaMV 35S promoter. Through dual signal amplification at both ends of rGO / Au NPs and Si@CdTe, the sensitive detection of the transgenic CaMV35S promoter is realized; and in the concentration range of 0.05-100 pM, the concentration of CaMV35S and photocurrent present good linear relationship, and the detection limit can reach 0.017 pM.

The invention discloses a testing method for radio frequency of a mobile phone. The mobile phone is registered to a 3G network, and a radio frequency index of the 3G network is tested; if a test result is qualified, the 3G network is switched into a 2G network; and if the 3G network is switched into the 2G network successfully, the radio frequency index of the 2G network is tested, if a test result is qualified, the test ends and PASS is displayed. If the test results of the radio frequency indexes of the 3G network and the 2G network are failed, the radio frequency indexes are tested repeatedly for many times, until fail times reach a predetermined value, FALL is displayed. By testing for many times, the method effectively reduces mis-test probability, improves testing efficiency and ensures communication quality.

The invention relates to a method and device for measuring channel state information in an LTE (Long Term Evolution) system. The method comprises the following steps of: receiving and averaging channel responses G to obtain an average channel response matrix H; obtaining SINR (Signal-to-Interference Noise Ratio), channel measure Q and CQI (Channel Quality Indicator) corresponding to each PMI/RI (Precoding Matrix Indicator)/(Rank Indication) combination of precoding matrixes and ranks through calculating; obtaining the total efficiency of each PMI/RI combination according to the CQI; obtaining the total measure Qs according to the channel measures Q; and comparing and selecting the PMI/RI combination with maximum total efficiency, and outputting the PMI/RI combination with the maximum total measure when the maximum total efficiency corresponds to more than two PMI/RI combinations. According to the method and device disclosed by the invention, by carrying out error compensation calculation on the SINR, the SINR error is reduced, so that the SINR can reflect the channel state information more accurately, thus the mismeasurement probability is reduced and the working efficiency of the device is improved.

The invention provides a front screen and touch screen testing tool, comprising a bottom frame module, a support plate module, a turnover module, a needle die module and a test mainboard. The upper end of the bottom frame module is equipped with the turnover module, which is connected with a carrier. A movable pin and support seats are fixedly mounted on the turnover module. A thrust bearing is arranged between the support seats. One end of the carrier is connected with the movable pin, and the other end is connected with the thrust bearing. The upper end of the carrier is fixedly equipped with the support plate module. The needle die module is disposed at one side of the support plate module. The support plate module and the needle die module cooperate with each other. The test mainboard is disposed at the bottom of the carrier and is connected with the needle die module. With a simple structure, the front screen and touch screen testing tool of the invention is capable of simultaneously testing a front screen and a touch screen, thereby realizing the function of combining two test workstations, improving the test efficiency and reducing manpower cost and test cost. In addition, the operation is convenient, the test error rate is reduced, the product quality is guaranteed, and requirements from customers are satisfied.

The invention provides a multi-task cervical cancer cell automatic identification method and device, and relates to the technical field of cell image identification, and the method comprises: traininga multi-task network model, wherein the multi-task network model comprises a classification branch and a detection branch; enabling the detection branch to be realized based on a deep learning targetdetection model YOLOv3 and be capable of be used for detecting cancer cells in the cervical cell image; enabling the classification branch to be used for judging whether abnormal cells exist in the cervical cell image or not; judging whether abnormal cells exist in the cervix uteri cell image or not by adopting classification branches, judging that the cervix uteri cell image is positive if the abnormal cells exist, and otherwise, judging that the cervix uteri cell image is negative; detecting the cell type in the cervical cell image by adopting a detection branch, and generating corresponding prediction information, wherein the detected cell types at least comprise cancer cells; and when the classification branch judges that the cervical cell image is positive, outputting a detection result of the detection branch. The multi-task cervical cancer cell automatic identification method improves the accuracy of cervical cancer cell automatic identification.

The invention provides a vehicle track monitoring method and device, and the method comprises the steps: obtaining a planned path of a vehicle, segmenting the planned path into a plurality of path segments according to feature points on the planned path, and obtaining a positioning point of the vehicle at the current moment, wherein the feature points comprise one or combination of an intersection, a road inflection point and a preset road length; and determining whether the vehicle deviates from the planned path according to the deviation value of the vehicle positioning relative to the path section. By applying the embodiment of the invention, the probability of false alarm is reduced.

The invention relates to a yeast recombination system for detecting endocrine disrupting chemicals and a method thereof, and the system is constructed by the following method: connecting a crassostreagigas estrogen receptor gene CgER to a vector pGADT7 to construct a recombinant expression plasmid; connecting a xenopus vitellogenin gene ERE to a vector pGBKT7 to construct a recombinant bait plasmid; and co-transforming the recombinant expression plasmid and the bait plasmid into a Y187 yeast cell, and screening and culturing a positive clone strain. The crassostrea gigas living in a benthic fixation manner is high in biotoxicity accumulation capacity, and potential hazards of marine pollutants to organisms can be revealed, so that the crassostrea gigas is regarded as an ideal marine environment monitoring organism. The Y187 strain is used as a yeast host and contains a reporter gene Lac Z, so that the construction of reporter plasmids is simplified, and the probability of false positive of recombinant yeast is greatly reduced. According to the yeast recombination system, the specificity of identifying or detecting chemicals with endocrine disruption activity is greatly improved.

The invention discloses a novel indirect ELISA detection method for Haemophilus parasuis antibody, relates to the field of antibody detection, and especially relates to an indirect ELISA detection method for Haemophilus parasuis antibody with the use of recombinant truncated proteins P2 and a kit thereof. According to the method, by truncating recombinant Haemophilus parasuis outer membrane proteins P2 and using the proteins as a coating antigen, the accurate detection of the Haemophilus parasuis antibody can be achieved by optimizing an ELISA reaction condition, a detection mode and a critical value determining mode, the method has good specificity and sensitivity, the problem of an over-high background in the process of antibody detection is effectively solved, and the cost of detectionis greatly reduced.

The invention discloses an automatic repetition measurement machine and method for main boards. The automatic repetition measurement machine and method are used for solving the technical problem thatan existing measurement machine for the main boards cannot achieve automatic repetition measurement for the main boards. The repetition measurement machine for the main boards comprises a conveying rail, a mechanical arm mechanism, a main board storage position, a measurement mechanism and a three-time-detection unaccepted product output mechanism; the conveying rail inputs the to-be-measured mainboards to the automatic repetition measurement machine for the main boards and outputs the qualified main boards from the automatic repetition measurement machine for the main boards; the mechanicalarm mechanism conveys the main boards among the conveying rail, the main board storage position, the measurement mechanism and the three-time-detection unaccepted product output mechanism; the main board storage position temporarily stores the to-be-measured main boards, the qualified main boards and the two-time-detection unaccepted main boards; the measurement mechanism measures the to-be-measured main boards, the one-time-detection unaccepted main boards and the two-time-detection unaccepted main boards; the three-time-detection unaccepted product output mechanism outputs the three-time-detection unaccepted main boards. The automatic repetition measurement machine and method for the main boards can achieve automatic repetition measurement on the main boards, the probability of mistakenmeasurement for the main boards is lowered, and the efficiency of measuring the main boards is improved.