209results about How to "Reduce computing consumption" patented technology

The invention relates to a distributed semantic and sentence meaning characteristic fusion-based character relation extraction method, and belongs to the field of natural language processing. The method comprises the steps of firstly performing training in a small amount of marked corpora and a large amount of unmarked corpora by utilizing statistic word frequency features and a Bootstrapping algorithm to obtain a relational feature dictionary; secondly constructing a triple instance of a statement through an element distance optimization rule, and constructing a triple feature space by fusing distributed semantic information and semantic information; and finally performing true-false binary decision on a triple, and obtaining a character relation type by utilizing a confidence degree maximization rule. According to the method, automatic generation of the feature relation dictionary is realized; a conventional relational multi-class problem is converted into a triple true-false binary decision problem, so that a conventional machine learning classification algorithm is better adapted; and by utilizing the distributed semantic information, the accuracy of relational classification is improved.

The invention relates to a method for identifying multi-class facial expressions at a high precision based on Haar-like features, which belongs to the technical field of computer science and graphic image process. Firstly, the high-accuracy face detection is achieved by using the Haar-like features and a series-wound face detection classifier; further, the feature selection is carried out on the high-dimension Haar-like feature by using the Ada Boost. MH algorithm; and finally, the expression classifier training is carried out by using the Random Forest algorithm to complete the expression identification. Compared with the prior art, the method can reduce training and identifying time while increasing the multi-class expression identification rate, and can implement the parallelization conveniently to increase the identification rate and meet the requirement of real-time processing and mobile computing. The method can identify the static image and the dynamic image at a high precision, is not only applicable to the desktop computer but also to the mobile computing platforms, such as cellphone, tablet personal computer and the like.

The invention provides a rapid identity authentication method based on a C/S mode. The rapid identity authentication method based on the C/S mode comprises the steps that (1) a client and a server generate respective random numbers in sequence, carry out encryption on the random numbers, send the encrypted random numbers to each other, carry out another encryption on decrypted random number data of the opposite side, and send the encrypted random number data back to each other, and in the process, the server carries out legitimacy authentication on identity information of the client, and encryption processing is carried out after the client passes through the authentication; (2) the client and the server carry out decryption on the returned data to obtain the random numbers which are processed through encryption protection transmission, comparison is carried out between the random numbers and the random numbers generated by the client, comparison is carried out between the random numbers and the random numbers generated by the server, and the client and the server pass through bidirectional identity authentication when the random numbers and the random numbers generated by the client and the server are consistent. According to the rapid identity authentication method based on the C/S mode, the legitimacy authentication processing process of the client to certificates of the server in the process of authentication is omitted, the process is simple, the process of authentication is rapidly optimized, safety can be ensured, and the rapid identity authentication method based on the C/S mode is especially applicable to the identity authentication processing process of a mobile terminal when the mobile terminal which is limited in terminal operation resource and network transmission capacity is connected to an application system.

The invention relates to a method for automatically extracting character relations from a Chinese text or a text set, and belongs to the technical field of computer science and information extraction. In the method, by means of sentence meaning model characteristics, the relation attribute affiliation is determined; the character relations scattered in the text or the text set are automatically extracted by combining methods such as relation attribute disambiguation, character relation strength calculation and the like; and the character relations are organized by a character relation network, and the character relations comprising character relation attributes and the relation strength are displayed in a character relation graph manner. According to the method, sentence meaning model characteristics are introduced, so that the accuracy of the method for extracting entity relations is improved, and the method for extracting the character relations is enriched. Besides, as the number of texts about a central character in the text set is increased, the method can extract character relations of the central character more accurately and comprehensively, and the application range is wider.

The invention belongs to the technical field of unmanned driving, and discloses a target following and dynamic obstacle avoidance control method for a speed difference slip steering vehicle, and the method comprises the steps: building four neural networks through employing a depth determinacy strategy in reinforcement learning; constructing a cost range of the obstacle so as to determine a single-step reward function of the action; determining continuous action output through an actor-critic strategy, and updating network parameters continuously through gradient transmission; and training a network model for following and obstacle avoidance according to the current state. According to the method, the intelligence of vehicle following and obstacle avoidance is improved, and the method canbetter adapt to an unknown environment and well cope with other emergencies. the complexity of establishing a simulation environment in the reinforcement learning training process is reduced. By utilizing a neural network prediction model trained in advance, the position and posture of each step of the target vehicle and the obstacle can be obtained according to the initial position and posture ofthe target and the obstacle and the action value of each step, so that the simulation accuracy and efficiency are improved.

The invention relates to the field of secure multi-party computation, in particular to a verifiable distributed privacy data comparing and sorting method and a device. The method and the device have the beneficial effects that through the steps of sorting the privacy data of n client sides by using a distributed client side initialization, inquirer initialization and inquirer Pa use merge sorting algorithm and the like; aiming at the situation that the data is stored on a large quantity of distributed nodes, a ceterless mode is completely adopted in the whole inquiry process by utilizing a digital signature and a semi-homomorphic encryption system; all the client side data is encrypted by using a client side public key and is only decrypted by a client side private key to ensure data privacy; and through a verification mechanism, all client sides can not input false data and can also not affectedly behave the comparing and sorting results.

The invention discloses a lung segmenting device of a 3D (three-dimensional) U-Net network based on mixed coarse segmentation features. The lung segmenting device comprises a lung 3D binary image generating module, a lung segmenting module and an optimizing module, wherein the lung 3D binary image generating module is used for sequentially performing Gaussian filtering, binaryzation, marking of communication areas and screening, size matching and trimming on an original lung CT (computed tomography) slice so as to generate a lung 3D binary image; the lung segmenting module is used for calculating an original lung CT image and the lung 3D binary image by the trained 3D U-Net network, and outputting a segmenting probability map; the optimizing module is used for calculating the segmenting probability map by a conditional random field, and outputting the final lung segmenting result. The lung segmenting device has the advantage that while the higher segmenting accuracy is produced, the lower calculation consumption and memory consumption can be guaranteed.

The invention discloses a user identity recognition method based on moving trajectory similarity comparison. Firstly, a city is divided into a longitude and latitude network, the frequency of trajectories appearing in each grid is counted, and grids with the number of points exceeding a threshold value Vp is mapped to a set; the similarity of two paired trajectories is calculated; finally a candidate threshold value Vr is set, namely Top-N sequences with the number of appearing areas exceeding Vr form a candidate set, and a trajectory Top-N sequence which is most similar to the trajectory of ato-be-identified object is matched in a pre-stored trajectory Top-N sequence set. Compared with a traditional method of directly calculating frequency distribution vectors, the areas which frequentlyappear have stronger regularity, so that the calculated amount is significantly reduced without sacrificing the accuracy of recognition.

The invention provides a hierarchical network structure search method, a device and a readable storage medium. The method comprises the steps of S1, constructing a super network; S2, acquiring image data and taking the image data as training data of network parameters and structure parameters of the super network; S3, generating a feature map, calculating a cross entropy loss function of the network parameters, and updating the network parameters of the super network; S4, generating a feature map and a KL divergence loss function, calculating a cross entropy loss function of the structure parameters to obtain a semi-implicit variational discard loss function, training and updating the structure parameters of the super network and obtaining a discard probability; s5, updating the basic unitby using the discard probability, and updating the annealing parameter; s3 to S5 are repeated, and the network parameters and the structure parameters are updated; s6, obtaining a final network. Themethod greatly reduces the search time and reduces the calculation complexity while guaranteeing the higher performance, guarantees the search stability and practicality, can be used in the fields ofimage target detection and classification, and improves the image processing speed.

The embodiment of the invention discloses an information interaction system and method suitable for federated learning. The system comprises at least two participants and a coordinator, each participant is provided with a graph network, and the graph network comprises a plurality of nodes; each participant represents all nodes in the graph network of the participant with a fixed-length vector to obtain a representation vector of each node, training of a graph neural network model is performed based on the representation vectors of the nodes, and gradient information is uploaded to the coordinator in the training process; the coordinator corrects the gradient information uploaded by each participant according to the gradient information uploaded by all participants, and issues the correctedgradient information to each participant; and each participant receives the corrected gradient information fed back by the coordinator, and updates the representation vector of the node based on thecorrected gradient information of the coordinator. Information interaction can be realized under the condition of guaranteeing the information security of each participant.

The invention discloses a mass equal request-oriented k-anonymous location privacy protection method, specifically comprising the steps of defining a user request message at a specific location; performing, by an anonymous server, anonymous processing on the user request message to generate a request message, and sending the request message to an LBS (Location-Based Service) server; returning, by the LBS server, a query result to the anonymous server; and after the anonymous server receives the query result returned by the server, performing traversing query on request messages in a current cluster, filtering respective needed real result according to the location of each user, returning the real result to each user, and finally emptying all messages of the current cluster. The method effectively reduces the computing consumption caused by repeated query while protecting the location privacy of mobile users, simultaneously reduces the communication overhead, and effectively improves the quality of service.

The invention relates to a trajectory link control method for a Delta robot based on a Bezier curve. The trajectory link control method is characterized in that the method establishes a curve arc length model, and the curve arc length model represents the corresponding relation between the arc length of the Bezier curve and a curve parameter, the Bezier curve is constructed according to a given trajectory parameter and the curve arc length model to obtain a Cartesian space coordinate, transforming the Cartesian space coordinate to a joint space angle of the Delta robot based on an inverse kinematic model of the Delta robot, and carrying out trajectory link on the Delta robot. Compared with the prior art, the trajectory link control method for the Delta robot based on the Bezier curve disclosed by the invention has the advantages of improving the smoothness of the end motion of the Delta robot, reducing the loss of a motor and the like.

The embodiment of the invention provides an abnormal transaction account group identification method and device. The method comprises the steps of respectively inputting the attribute information of each account into a machine learning model for predicting an account risk, and determining at least one account as a high-risk account; respectively executing a local community mining step for each high-risk account: taking the current high-risk account as an initiating node, respectively determining association values between other nodes and the initiating node in the graph data, and determining arisk account community corresponding to the high-risk account; and if a plurality of risk account communities are obtained and the risk account communities meet a preset non-similar requirement, determining each risk account community as an abnormal transaction account group of the target financial institution. According to the invention, the efficiency, reliability and accuracy of abnormal transaction account group identification can be effectively improved, and the operation safety and reliability of a financial institution obtaining an abnormal transaction account group through identification can be further improved.

The invention discloses a three-dimensional scene reconstruction method and device and a storage medium. The method comprises the steps of obtaining the hyperspectral image data, the depth data, the three-primary-color RGB image data and the inertial measurement unit IMU data which are synchronous in timestamp; determining a camera pose of each frame of RGB image according to the RGB image data and the IMU data; generating a point cloud picture of an object according to the depth data, the RGB image data and the camera pose; and reconstructing a three-dimensional model according to the point cloud picture, and combining the hyperspectral image data to generate a three-dimensional hyperspectral reconstruction model. According to the method provided by the embodiment of the invention, the time for generating the three-dimensional hyperspectral reconstruction model is shorter, and the real-time three-dimensional scene reconstruction can be realized.

The invention discloses a hub contour detection method based on improved Hough transform, which comprises the following steps: firstly, preprocessing the wheel hub image to extract the edge contour curve of the wheel hub; then dividing the contour boundary points into different subsets and removing the noise set; obtaining the intersection points of each section line and contour line by cutting the images at intervals of 30 degrees, and obtaining the equations of fitting straight lines in different directions by Hough transform; determining the coordinates of the center of the circle, obtaining the distance between the center of the circle and the intersection point, judging whether the circle is circular or not according to its variance, and finally obtaining the center and radius of thecircle. Compared with conventional Hough transform and a random Hough transform algorithm, the detection method of the invention has the advantages of short running time, fast running speed and higherdetection precision.

The invention discloses a high-spectral image sharpening method based on probability matrix decomposition, and belongs to the field of remote sensing image processing. The method is characterized in that the method comprises the steps: carrying out the preprocessing of two inputted images based on the hypothesis that a pixel spectrum vector of a high-resolution high-spectral image is just formed by the linear superposition of a few of vectors with the hidden spectrum features according to one low-resolution high-spectral image and one high-resolution high-spectral image and the frequency response matrix, decomposition matrix dimensions and algorithm iteration number, corresponding to the high-spectral images, of a multispectral camera, wherein the low-resolution high-spectral image and the high-resolution high-spectral image are taken at the same height in the same target region at the same time; listing mathematical equations of the two processed images and a to-be-solved high-resolution high-spectral image, and building a Bayesian model; calculating the posteriori probability distribution of the decomposition matrix, and obtaining a matrix with the hidden spectrum features in the decomposition matrix, and solving the mean value of linear superposition vectors corresponding to the two images after preprocessing, thereby obtaining the to-be-solved high-resolution high-spectral image. The method greatly reduces the time consumption of calculation while improving the sharpening precision, and is easy to adjust.

The invention discloses a gait recognition method, particularly the gait recognition method based on two-dimension wavelet packet decomposition and complete PCA (Principal Component Analysis), which belongs to the technical field of pattern recognition. The method comprises the following steps of: pretreatment (morphologic treatment, target extraction and image normalization), feature extraction (gait cycle, gait energy image and fusion of WPD plus (2D) 2 PCA selection feature) and classification of the test samples to a corresponding class according to the nearest neighbor classification principle. the method integrates periodic frames in one mean chart by utilizing the gait energy diagram so as to eliminate the influence of difference of periodic frame numbers on the feature extraction, thereby reducing the computational complexity; and besides, the method extracts and selects gait features by initially adopting the method of fusing WPD with (2D) 2 PCA so as to solve the problems of loosing of high-frequency components or excessive dimensionality due to the simple adoption of all data of the existing gait recognition method based on wavelet transformation, and has higher recognition rate as well as higher robustness of vision angle change.

The invention relates to a sum and product computing method for protecting data privacy security of an arbitrary user group. The computing method comprises the following steps of system initialization, user private key generation, secret key generation, sum encryption, product encryption, sum decryption, and product decryption. To be specific, according to the system initialization, a security parameter is specified; and a corresponding integer group and a system public key are generated by the security parameter. According to the user private key generation, participants in the user group compute private keys independently and respectively, so that the product of the private keys is equal to one after modulus operation. According to the secret key generation, a sum secret key and a product secret key for encryption data are generated for the participants based on combination of the system public key and the user private keys. According to the sum encryption, during the sum computing, the participants utilize the obtained secret keys to carry out encryption on the sum computing and send obtained sum ciphertexts to other participants in the user group. According to the product encryption, during product computing, the participants utilize the obtained secret keys to carry out encryption on the product computing and send obtained product ciphertexts to other participants in the user group. According to the sum decryption, the participants in the user group combine the received ciphertexts to obtain a final sum. And according to the product decryption, the participants in the user group combine received ciphertexts to obtain a final product.

The embodiment of the invention discloses a window management method and a terminal and relates to the technical field of a graphical user interface. The invention is designed to reduce calculation consumption of the terminal in the process of image display and optimize the image display method. The method of the embodiment of the invention comprises the following steps: delivering the image data of a first application program window to a local video memory for display by a direct memory access (DMA) way; building a second application program window; and displaying the image data of the first application program window and the image data of the second application program window via a window system. The embodiment of the invention also provides the terminal for realizing the method. The embodiment of the invention is applied to single or multiple window display.