44results about How to "Guaranteed search efficiency" patented technology

The invention discloses a user-oriented information search engine system and a method. The system comprises eight modules of a search term pushing module, a user initiating search module, a user concern updating module, a primary search module, a user interest deducing module, a user concern result word segmentation module, a search word refactoring module and a secondary search module. The method includes analyzing and pushing user selectable search words, performing user initiating search, updating user concerns, executing the primary search, deducing user interests, performing word segmentation for user concern results, refactoring the search words and executing the secondary search. Accordingly, the system has the advantages of being complete in inquiring range and high in inquiring accuracy. Besides, by means of the system, the select input and automatic sequencing of the search words can be achieved, the accuracy of following inquiring results can be improved through the interactive operation, and a flexible, convenient and intelligent interactive interface is provided for the user to execute information search.

The invention provides a small file storage method, query method and device. The small file storage method comprises the following steps: acquiring a small file to be stored, wherein the small file comprises a file, the file size of which is less than a preset threshold; storing the obtained small file into a current packaged file and generating metadata of the small file, wherein the metadata of the small file comprises an file identification of the packaged file of the small file, position information of the small file in the packaged file and a data length of the small file; calculating an attribute value of the small file according to a file name of the small file, wherein the attribute value comprises a file name hash value; and storing the calculated attribute value and the metadata into an index subsystem as index files of the small file. Through the small file storage method, query method and device, the file names stored in index files in the prior art are replaced by file name hash values, so that the practicability of the index files and the query efficiency of the small files are improved.

The invention discloses a two-stage particle swarm optimization algorithm including independent global search. The two-stage particle swarm optimization algorithm comprises the following steps: species initializing; adopting the chaotization method for initializing the positions X and the speeds V of particles; adopting the fitness function (fitness) to calculate the adaptive values of all current particles, and initializing the record optimal position (pbesti) of each particle and the global optimal position (gbest) of all the particles; carrying out the first stage iterative-global search; carrying out the second stage iterative-local search. The two-stage particle swarm optimization algorithm has the benefits that during each iteration of the first stage iterative-global search, one non-self particle is randomly selected from all the particles for learning, and the random selection guarantees that the species is prevented from tracking the specific particle and that the aggregate phenomenon is avoided; the second stage iterative-local search can quickly converge and can obtain solutions high in accuracy, the accuracy of the optimal solution is increased, and the prematurity defect is remarkably improved.

The invention discloses a method for realizing a real-time database for a miniature power grid intelligent terminal. The method comprises the following steps of: mapping data sheets, regions and records forming a real-time database to internal storages of the miniature power grid intelligent terminal in a file mapping mode, and forming a database entity; and storing the head address of a tablespace and the address of a record pointer in a corresponding B+ tree. The real-time database generated according to the method can operate in the miniature power grid intelligent terminal which is only provided with an embedded processor and few internal storages; the data access of the real-time database can be kept in a microsecond speed; and complex and dynamic variation data can be stored in the real-time database.

The invention relates to a font similarity and font substitution method. The method comprises the steps that firstly, according to a preset attribute value affecting the visual effect of fonts, Chinese character text block images are constructed respectively so as to generate a Chinese character text block image sample database, wherein each Chinese character text block image comprises n*n non-overlapped Chinese characters, and n is larger than or equal to 2; secondly, a textural feature value of a Chinese character text block image set is calculated; thirdly, lacking fonts are replaced by using the static replacement method or the dynamic replacement method.

The invention discloses a signal searching method and device for vehicle-mounted terminal, storage medium and vehicle-mounted terminal, and the method comprises the steps: searching a network signal at a first searching time according to a first preset time interval and not searching the network signal, searching the network signal at a second preset time interval and not searching the network signal at a second searching time according to a third preset time interval; And the third preset time interval is greater than ten times of the sum of the first preset time interval and the second preset time interval. According to the invention, the network signal is searched in the first search time and the second search time at intervals; and the preset time interval of the second search time isfar greater than the preset time interval of the first search time, so that the search efficiency can be remarkably ensured in the whole search process, and meanwhile, when the vehicle-mounted terminal enters the dormant state, the dormant current of the vehicle-mounted terminal is remarkably reduced, and the risk of whole vehicle feeding of the vehicle-mounted terminal is avoided.

The embodiment of the invention provides a data management method, device, server and system. The data management method is applied to a management server and comprises the following steps: receivinga data search instruction; selecting a storage device with the highest storage level from storage devices corresponding to the different storage levels which are not read unsuccessfully, and reading the data conforming to the search instruction; when reading fails, returning to execute the operation of selecting the storage device with the highest level from the storage devices corresponding to the different storage levels which do not fail to be read yet, and reading the data conforming to the search instruction, otherwise, taking the successfully read data as a search result of the search instruction; wherein the storage level is obtained by dividing according to the difference of the data search efficiency of each storage device and the difference of the size of the storage space; according to the sequence of the storage levels from low to high, the data search efficiency is improved step by step, and the size of the storage space is reduced step by step. According to the scheme, the effect of considering the search efficiency and integrity of the data can be achieved.

The invention provides a method and a device for searching images by using images, which are used for solving the technical problems of low image searching speed and low efficiency in the prior art. The method for searching images by using images comprises the following steps: carrying out dimension reduction processing on each image in an image library to obtain a feature vector of each image; calculating an average value of the feature vectors of all the images in the image library, and determining at least one reference image from the image library according to the average value; calculating and storing the similarity between each image in the image library and each reference image in the at least one reference image; after a image searching instruction is received, calculating the similarity between the to-be-searched image and each reference image; and searching Q images meeting a preset condition from the image library according to the similarity between the image to be searchedand each reference image and the similarity between each image in the image library and each reference image.

The invention relates to the field of large screen splicing display, in particular to a signal display method and system based on a GIS (geographic information system) map. The method is used for a spliced wall controlled by a control device, and the GIS electronic map is displayed on the control device. The method comprises a control device processing step particularly including: receiving marking signals of marking video points on the map; distributing a sole geographic identifier for each video point on the map according to the marking signals; associating a video signal corresponding to each video point with the corresponding geographic identifier; searching the video points in a target area if receiving the selection operation of clicking the video points on the map or receiving the selection operation of selecting the target area on the map; selecting associated video signals according to the searched video points or the geographic identifiers of the clicked video points; callingthe associated video signals and controlling the video signals called by spliced wall display.

The invention provides a history browsed webpage searching method. The history browsed webpage searching method comprises the following steps: acquiring page memory information input by a user; obtaining a webpage snapshot of a pre-stored webpage browsing record; matching the page memory information with the webpage snapshot according to a preset matching rule to obtain a matching result; and determining a target historical browsed webpage according to the matching result. According to the method, the user does not need to click the webpage items in the browsing history record one by one to search the target historical browsing webpage, so that the search efficiency and accuracy of the target historical browsing webpage can be remarkably improved.

The invention discloses an improved JPS path optimization method based on an Angle-Propagation Theta * algorithm. The method comprises the following steps: S1, modifying a forced neighbor and a neighbor pruning rule of the JPS algorithm; s2, a view triangle judgment method is adopted, and a generated path is optimized in a mode of selecting a succession search point; s3, an Angle-Propagation Theta * algorithm is adopted to carry out modification on the sight line reachability detection between the two nodes; and S4, reducing iterative computation and complexity by adopting a bidirectional optimization algorithm for continuously updating the secondary search points and the discrete function. A path-finding simulation comparison is carried out on an A * algorithm, a JPS algorithm, a JPS path optimization algorithm improved based on an Angle-Propagation Theta * algorithm and a double-calculation optimization algorithm on a grid map with four different types of sizes and the same obstacle proportion; experimental results show that the bidirectional optimization method provided by the invention can shorten the overall path length by 4-14% on the basis of maintaining the path search efficiency.

An embodiment of the present invention provides a video search method, The method comprises the following steps: a management node receives a video search request sent by a client, which includes characteristic information of a video to be searched and monitored, wherein, the characteristic information comprises at least one of the following items: a reference picture, a spatial range, a time range, and attribute information; the management node determines a target storage node storing the monitored video to be searched, and sends the video search request to each of the target storage nodes; Each of the target storage nodes receives the video search request, According to the locally stored surveillance video, the stored surveillance video index information, and the feature information, target monitoring video index information whose matching degree with the feature information is greater than a first preset threshold value is searched, and the target monitoring video index informationis sent to the management node. The embodiment of the invention can realize the searching of the monitoring video in the cloud storage system.

The invention discloses a power distribution network reconstruction method of a particle swarm algorithm considering the number of loops of an IEEE node system, and belongs to the field of power systems. The invention aims to solve the problem that: a power distribution network reconstruction method based on an optimization algorithm cannot give consideration to search efficiency and target optimization. The power distribution network reconstruction method based on the particle swarm algorithm comprises the following steps: step 1, initializing parameters; step 2, randomly generating an initial group; step 3, evaluating each particle, and calculating the power flow of the power system; step 4, updating the particles; step 5, updating pbest; step 6, updating gbest; and step 7, judging whether t reaches the maximum number of iterations T or not, if so, outputting the gbest, ending the program, otherwise, turning to the step 4. The method is mainly adopted to reconstruct the power distribution network.