37results about How to "Fast and accurate search" patented technology

The invention discloses a keyword or multi-keyword based searchable encryption method and system. The keyword based searchable encryption method comprises the following steps: generating a public key in an encryption process according to a random parameter and a system public coefficient, then encrypting a keyword in a file through the public key and a private key to obtain a keyword ciphertext, and searching the keyword ciphertext according to a keyword input by a user to obtain a ciphertext required by the user. The keyword based searchable encryption method has the advantages of low computing expense, simple algorithm, high speed and suitability for multiple user models. The multi-keyword based searchable encryption method comprises the following steps: storing all keywords of each file through a structural tree, generating the public key according to the random parameter and the system public coefficient, establishing relations between all the keywords in the file and ciphertexts of the keywords through a hidden part of the structural tree according to the public key, and encrypting to obtain all keyword ciphertexts in the file, wherein for a plurality of keywords input by the user, a cloud ciphertext required by the user can be searched only if the ciphertexts of all the keywords are searched. The multi-keyword based searchable encryption method has the advantage of higher safety.

The invention discloses a public opinion recommendation method and device, a computer apparatus and a storage medium. The method comprises the steps of crawling the external corpus from the text resources of the extranet address according to the keyword set obtained from the initial corpus segmentation, and obtaining the extranet full-text article vector corresponding to each text one by one; classifying the extranet full-text article vectors according to the pre-clustering clusters, and obtaining the updated clusters; obtaining the corpus data corresponding to the clusters in the updated clusters, and obtaining the public opinion heat value of each cluster in the updated clusters according to the corpus data and the preset public opinion heat model; receiving the retrieval keywords, and if the labels of the clusters existing in the updated clusters are the same as the retrieval keywords, displaying the public opinion content and the public opinion heat value of the corresponding clusters. The method realizes automatic labeling after judging the attribution of clusters according to the text correspondence in the external corpus, and can quickly and accurately retrieve the target public opinion content from the clusters according to the retrieval keywords.

Systems, methods and apparatus are provided through which, in one aspect, one or more sub-products of a product are searched in a database, presented to a search, sold and/or distributed.

The invention discloses an urban power network planning method based on a pseudo-crossover taboo hybrid genetic algorithm. The urban power network planning method includes the steps: (1) performing genetic encoding for all cities; (2) establishing a target function of each individual, and calculating a fitness function of each individual; (3) randomly selecting two individuals in a parent group by the aid of a pseudo-crossover operator, and performing air extension by two randomly generated crossover points; (4) combining a taboo search operator with the genetic algorithm to form the pseudo-crossover taboo hybrid genetic algorithm. The pre-crossover individual is rearranged according to arrangement information of another individual by the aid of the pseudo-crossover operator, the operator can avoid repetition of elements in the individuals, and an optimal power network planning scheme can be rapidly and accurately searched within a wider range by means of taboo search optimization and by jumping out of locally optimal solutions.

The invention relates to the technical field of image processing, especially relates to a picture generation method and module, and a picture searching method and system. The picture generation method comprises following steps of providing a picture setting interface, wherein the picture setting interface comprises a picture content setting region; displaying the feature contents input by a user and a background picture in the picture content setting region through adoption of a superposition mode; and generating a picture according to the display image in the picture content setting region. According to the picture generation method and module, and the picture searching method and system provided by the invention, the picture containing the feature contents input by the user can be generated conveniently and rapidly; the generated picture is used as the basis for searching pictures; and therefore, the pictures satisfying own needs can be searched accurately and rapidly.

The invention discloses an image storage system, which at least comprises an image capture device, an image capture control module, an upload module, an image storage module and a physical operation module, wherein the image capture device is used to establish image data; the image capture control module is electrically connected with the image capture device and is used to control the image capture device to obtain the image data; the upload module is electrically connected with the image capture control module and is connected to the Internet to transfer the image data; the image storage module is connected to the Internet to receive and store the image data; and the physical operation module is used to obtain physical information.

The invention relates to a manual ultrasonic visual nondestructive detection device and method based on camera shooting positioning. The device comprises a video camera, a data acquisition card, an industrial control computer, an ultrasonic flaw detector, a detector, stable light sources, a support and a workbench. The video camera and the stable light sources are both fixed on the support, the video camera is over against the workbench, the stable light sources are used for lighting the workbench, the detector is connected to the ultrasonic flaw detector, performs ultrasonic detection on a tested piece placed on the workbench, and provides the test data to the ultrasonic flaw detector, the data acquisition card collects the output data of the ultrasonic flaw detector and provides the datato the industrial control computer, the video camera provides the shot image data to the industrial control computer, and the industrial control computer processes the received image data and the output data of the ultrasonic flaw detector so as to obtain an ultrasonic C scanning detection image of the tested piece, thereby realizing ultrasonic visual nondestructive detection based on camera shooting positioning.

The invention relates to the technical field of power distribution networks, and discloses a power distribution network feeder line fault positioning method and device, terminal equipment and a storage medium, and the method comprises the steps: building a tree topology structure of a power distribution network feeder line region according to preset information collection nodes when it is judged that the power distribution network feeder line region has a fault; obtaining node current information of each node in the tree-shaped topological structure, and traversing the tree-shaped topological structure to obtain node current information of head nodes and tail nodes of all Y-shaped branches; wherein each Y-shaped branch comprises a head node, two branches and two tail nodes; judging the Y-shaped branch of which the fault current flows through the head node and the fault current does not flow through the two tail nodes as a fault Y-shaped branch; and searching nodes in the fault Y-shaped branch and determining the position of a fault point. According to the method, overlarge memory space caused by a complex network topology structure can be avoided, meanwhile, the judgment process is simplified, and the position of a fault point can be quickly searched.

The invention provides an editable fast channel-selection remote controller. Users can encode and store corresponding radio channels of appliances (television, radio and the like) controlled by controllers through combination of Chinese characters or English or numbers or the Chinese characters and the numbers and letters. When the controller is used, a preset code is input in the controller and the radio channel which is needed is chosen. The controller is suitable for the appliance of various brands in the prior art, and the appliances do not need to be modified. The controller has an associative memory function and can memorize and search all the radio channels according to different attributive classifications so that users can find a needed television channel rapidly and conveniently according to different needs. The channel-selection codes can be preset by suppliers, or set by users according to personal preference and demands, or set through both. The controller replaces an existing controller, and has the advantages that users can press familiar codes to conveniently and rapidly find the needed radio channels.

The invention provides a target retrieval method and device and a storage medium, and the method comprises the steps: obtaining original video data from monitoring equipment, and segmenting the original video data, and obtaining a plurality of original video segments; making fusion feature analysis on each original video segment to obtain a fusion feature vector corresponding to each original video segment; importing to-be-retrieved target video data, and segmenting on the to-be-retrieved target video data to obtain a plurality of to-be-retrieved target video segments; and performing fusion feature analysis on each to-be-retrieved target video segment to obtain a to-be-retrieved fusion feature vector corresponding to the to-be-retrieved target video segment. The appearance and facial features of the to-be-retrieved target are fully fused, so that the retrieval accuracy is greatly improved, the manpower is saved, the target is quickly and accurately retrieved in the video, and the requirements of the industry are better met.

The invention discloses a method for screening data search results of a data center, and particularly relates to the technical field of data screening, which comprises the following specific steps of: 1, constructing the data center, and dividing data stored in the data center according to subject names of retrieval objects, dividing data corresponding to different retrieval objects into different subdirectories, and then constructing a theme name database by using a plurality of theme names; 2, constructing a keyword database according to theme names of different subdirectories divided by the data center; and 3, inputting the theme name of the object to be retrieved through the user operation interface by a retriever. According to the method, the keyword database is constructed, and a plurality of keywords are provided for a retriever to select when the retriever carries out retrieval, so that the retriever can be helped to input accurate and effective keywords in a search engine, data contents matched with the keywords can be searched by utilizing the search engine, and the data content can also meet the requirement of retrieval.

The invention relates to a method and a device for recommending application programs and a terminal. The method for recommending the application programs comprises the following steps of receiving a search sentence, and obtaining a search keyword according to the search sentence; according to the search keyword, obtaining a first application program; calculating the similarity between the first application program and each application program in an application program library, and determining the second application program according to the similarity; displaying the second application programas a target application program. The method has the advantage that the application program corresponding to the search sentence inputted by a user can be quickly and accurately found from the application program library, so as to improve the experience effect of the user.

The embodiment of the invention discloses a voice retrieval method and a device, a readable storage medium and electronic equipment. The method comprises the following steps: converting voice information for retrieval into text information; and extracting nouns used for representing entity names from the text information to determine an entity name set, and performing entity matching according tothe entity names contained in the entity name set and the entity nouns contained in each piece of order information in the order set to determine the order information matched with the voice retrievalcommand. The method is realized through an entity matching method, and the order information can be quickly and accurately retrieved.