20results about How to "Avoid traversal" patented technology

The embodiment of the present invention provides a file index information processing method, device, electronic device and storage medium. The method includes: writing the target file data to be stored into the target storage resource under the storage management node; determining the target file index sub-table from the target file index resource associated with the target storage resource and writing the file index information of the target file data to be stored into the target file index sub-table; when reading the file data, searching for the preset file index sub-table adapted to the target file data to be queried from the preset file index resource associated with the preset storage resource under the storage management node; and performing the target file data to be queried reading operation in the preset storage resource associated with the preset file index resource to which the adapted preset file index sub-table belongs based on the file index information recorded in the searched adapted preset file index sub-table. This solution is adopted to solve the problem of slow retrieval and reading speed when storing massive image data in security business.

The present invention discloses a digital traffic control system and method based on big data, which relates to the field of intelligent traffic technology. By pre-collecting road information and personnel flow information in the city, using voltage sensors and wireless signal transceivers, the fault conditions of traffic lights in urban traffic are analyzed in real time. Further, when sending a traffic light fault signal, the position of the intersection that needs to be controlled is determined according to the number of the faulty traffic light, so as to screen out motor vehicles and non-motor vehicles or pedestrians that need traffic control from all city citizens; then, according to the driving conditions of motor vehicles and the positions of non-motor vehicles or pedestrians, the intersection where the faulty traffic light is located is intelligently controlled; and the problem of how to control traffic and ensure road safety when the traffic light at the intersection fails is solved.

Embodiments of the present disclosure disclose an adaptive memory conversion method and device for a distributed file system. A specific implementation of the method comprises: dividing a metadata set in a target directory to obtain a metadata subset group; setting a corresponding memory data structure form for each metadata subset; determining a target metadata subset; executing a corresponding access processing flow on the target metadata subset to obtain and output a final access result; obtaining access feature sets and system resource states of each metadata subset in the metadata subset group in real time to obtain a directory index set; determining memory data structure form conversion instructions corresponding to metadata subsets to be converted in the metadata subset group to obtain a conversion instruction set and a to-be-converted metadata subset group; and performing data reconstruction on the to-be-converted metadata subset group to obtain a converted metadata subset group. The implementation can improve memory utilization, reduce redundant memory occupation, and reduce unnecessary data access overhead.

This invention relates to the field of electronic nautical chart system technology and discloses an electronic nautical chart mapping and printing method based on the QT framework, which solves the problems of low data retrieval efficiency, display distortion, poor format adaptability and insufficient interactivity in the prior art. It includes the following steps: (1) Dynamic data filtering based on Rtree spatial indexing technology, quickly locating geographic elements of the target area through full-map printing or box-selection printing modes, and dynamically calculating the scale and coordinate parameters; (2) Intelligent drawing of nautical chart elements using SVG vector format, integrating latitude and longitude scales, north arrow, legend, scale, and nautical chart image drawing, and dynamically configuring production information, element visibility, and font style through QT controls; (3) Interactive preview supports adaptive scaling, multi-mode display settings, and cross-format output, and can generate high-precision vector PDF printables or pixel PDF schematic diagrams. This invention can be applied to the printing module of an electronic nautical chart system based on the QT framework.

This application provides a firmware boot method applicable to the field of computer firmware technology. It includes: in response to a firmware boot command, executing a first coroutine task in a coroutine task queue; upon detecting that the execution of the first coroutine task has been paused by calling a blocking interface, saving context data determined during the execution of the first coroutine task to a first stack space corresponding to the first coroutine task; determining a second coroutine task in a paused execution state from the coroutine task queue; resuming the execution of the second coroutine task based on the context data stored in a second stack space corresponding to the second coroutine task; and determining the firmware state as booted based on the execution results of multiple completed coroutine tasks. This method utilizes cooperative coroutines to concurrently execute multiple hardware initialization tasks within a single thread, and achieves non-intrusive yielding by intercepting blocking interfaces, significantly shortening firmware boot time.

The invention provides an avionics system fault diagnosis method and system based on graph anomaly detection, and the method comprises the steps: obtaining sensor time sequence data of an avionics system, and constructing a sensor network topological graph based on the sensor time sequence data; updating the embedded representation of the sensor nodes according to the sensor network topological graph; according to the method and the corresponding system, a global attention mechanism and a graph structure are used for fault diagnosis, and the fault type of the avionics system is judged by creating a topological graph, dynamically updating the embedded representation and combining anomaly detection. The whole set of data-driven method closely combines possible fault inference and positioning, so that the accuracy and the response speed of fault diagnosis are greatly improved, and a powerful guarantee is provided for stable operation of an avionics system.

The invention relates to a method for quickly orienting a nanowire center again based on a geometric structure, belongs to the field of nano material simulation, and can be used for synchronization or post-processing analysis of open-source molecular dynamics simulation track files. The characteristic that the section of the nanowire is approximately circular is utilized, only atomic geometric coordinates are considered, the atomic mass weight factor does not need to be considered, the boundary atoms on the outermost layer are quickly found through the improved minimum circle covering method through Python programming, the center coordinates of the nanowire are redirected, and all atoms are prevented from being traversed. The method can be combined with open-source molecular dynamics simulation software, the operation process is flexible and adjustable, the expansibility is high, and the change rule of different property parameters along with the time trajectory can be researched.

This application proposes a collaborative acceleration method and apparatus for address translation in RISC-V nested virtualization. The method introduces a Global Translation Arbitration (GTA) module and a shared secondary address translation cache (SLC) between the Memory Management Unit (MMU) and the Input / Output Memory Management Unit (IOMMU) to uniformly schedule and share address translation requests. When an address translation request misses its local cache, the SLC enables cross-unit translation result reuse. If the SLC also misses, the GTA further schedules the page table traverser resource pool to perform nested address translation, and the resulting translation is then filled back into the SLC and local cache, achieving translation result reuse. This application effectively reduces the redundant translation overhead between the MMU and IOMMU, lowers address translation latency in nested virtualization scenarios, and improves system resource utilization and overall performance.

The present invention relates to a multi-agent distributed fast SLAM method based on vision, belonging to the field of image processing technology. Before matching feature points, the picture collected by the camera is first segmented so that the feature points are evenly distributed in each area, so that the selected feature points are more representative; secondly, a "point-line" feature is designed to generate a new word bag, and loop detection is performed using reinforcement learning, which solves the problem of insufficient performance of point features in low-texture and low-contrast environments; since the convex optimization algorithm cannot be directly applied to the posture matrix, the duality principle is used to transform the original problem into a strongly convex dual problem, and the Lagrange multiplier method is used for iterative solution, and the equivalence of the original problem and the dual problem is proved; afterwards, since the convergence speed of the algorithm is slow, a posture averaging algorithm based on a random matrix is ​​designed, and the convergence speed of the multi-agent posture is significantly accelerated.

This invention relates to the field of computer-aided design technology, specifically disclosing a system for automatic extraction and cost calculation of drawing dimensions based on DXF files. The system includes: a main interface interaction module, a file management module, a DXF parsing and dimension extraction module, a cost calculation module, a log and progress management module, and a version and permission management module. The system achieves a closed-loop process for DXF drawings, from batch import, integrated automatic extraction of geometric and process information, automatic cost calculation with compensation in multiple modes, batch fault-tolerant processing, to commercial authorization control. This invention constructs a fully automated closed-loop process from batch import of DXF drawings, integrated automatic extraction of geometric and process information, automatic cost calculation in multiple modes, and automatic export of results, completely replacing the traditional method of manually processing drawings one by one.

The present application provides a method, device, mobile terminal and storage medium for page return, the method for page return comprising: when accessing a first page, setting a return attribute mark for the first page; when accessing a second page, obtaining a return request for the first page, the return request for the first page including the return attribute mark of the first page, and at least one interval page between the first page and the second page; returning to the first page according to the return attribute mark of the first page by a navigation controller. The present application sets a return attribute mark for a page and performs page return according to the return attribute mark, thereby avoiding traversing all browsed pages, reducing system burden and improving system response time; at the same time, performing a page return operation according to the return attribute mark reduces the steps of comparing and matching the specified page with all pages in the prior art, thereby avoiding matching errors and improving the accuracy of page return.

The invention relates to the technical field of element library management, in particular to a graphic element library management method and system based on data processing. The method comprises the following steps: constructing an element updating directed graph according to log data of a graphic element library to obtain the element updating directed graph; performing element updating node tracing structure design and tracing hierarchical index table design on the element updating directed graph to obtain a node tracing hierarchical index table; performing concurrent retrieval attenuation gradient calculation on the node tracing hierarchical index table to obtain concurrent retrieval attenuation gradient data; performing cache hit rate decrease estimation according to the concurrent retrieval attenuation gradient data to obtain cache hit rate decrease estimation data; and designing a package design graphic element index management strategy according to the cache hit rate decrease estimation data to obtain the package design graphic element index management strategy. The element library management method is optimized, so that the element library management method is more perfect.

The invention relates to the technical field of computer vision and robots, and provides a pharmacy unmanned vehicle path planning and drug matching method based on JPS and RRT algorithms, and the method comprises the steps: constructing a pharmacy environment map, and determining the real-time position of an unmanned vehicle; performing unmanned vehicle path planning by adopting a JPS-RRT * algorithm to obtain a final driving path; the method comprises the following steps: acquiring a target drug image, constructing a drug feature template library, periodically acquiring drug images in a current visual field, pre-processing the drug images, and matching the pre-processed drug images with the drug feature template library by adopting an SAD template matching algorithm to obtain a drug classification result; and controlling the unmanned vehicle to move to the target position according to the final driving path, and executing a corresponding medicine grabbing or sorting task according to a medicine classification result.

The invention relates to the field of data request processing, and discloses a reading method based on Hudi data, which comprises the following steps: receiving a request for accessing a target object to a Hudi storage system, and extracting an identifier of the target object from the reading request; querying a data cache region of the Hudi storage system by using the identifier to determine whether an update record merge file of the target object is stored in a read-time merge layer of the data cache region or not; if the update record merged file corresponding to the target object is stored, retrieving an initial data record of the target object from the MOR table according to the identifier; and sending the retrieved initial data record to a data cache region, and merging the initial data record and the update record merging file to generate a final data file of the target object in response to the reading request. By introducing the data cache region and the merging layer during reading, the situation that a large number of historical records need to be traversed during reading each time is avoided, and therefore the query efficiency is improved.

The present invention discloses a multi-agent traffic simulation data storage and update method, including: establishing corresponding vehicle agents for all vehicles; constructing a simulation space graph, each vehicle agent corresponds to a node in the simulation space graph; determining the connection correspondence between nodes, and completing the edge definition of the simulation space graph; combining the vehicle attribute information, vehicle following decision-making ability and vehicle lane-changing decision-making ability of each vehicle agent, using a depth-first algorithm to update the state of the vehicle agent corresponding to each node on the simulation space graph, and then updating the node corresponding to the connection edge of each node on the simulation space graph based on the vehicle agent position after the state update, to achieve data update of the simulation space graph until the simulation time ends. The present invention avoids the process of repeated reading during the state update process, thereby accelerating the storage and update of micro-simulation states from the perspective of data structure, and improving the operation efficiency of micro-simulation.

The present invention discloses an audio file retrieval method and system, comprising: obtaining a device identification code and a file system structure of a storage medium to be retrieved according to a device node corresponding to the storage medium to be retrieved, analyzing the complexity of a directory according to the file system structure, generating a check value of the directory structure according to the analysis, identifying a historical device according to the device identification code, and determining a retrieval path for an audio file according to a result of the identification; when the device is not a historical device, traversing and retrieving the audio file according to the file system structure, matching the check value when the device is a historical device, detecting directory modification according to the matching result, and determining a final audio path according to the detection result combined with historical audio file information, thereby improving the efficiency and accuracy of audio file retrieval.

The invention provides a large object rewriting method of a database, a storage medium and equipment. The large object rewriting method of the database comprises the steps that an event for rewriting data in a large object column in the database is obtained, and the large object column is used for storing large object data items of a large object data type; a rewriting sub-task queue and a rewriting process group are established, the rewriting sub-task queue is used for storing a plurality of rewriting sub-tasks divided based on rewriting events, and the rewriting process group comprises a plurality of rewriting processes running in parallel; and allocating the rewriting sub-tasks in the rewriting sub-task queue to each rewriting process of the rewriting process group, and processing the allocated rewriting sub-tasks by each rewriting process. The method has the advantages that the rewriting speed can be remarkably increased, and the locking time is shortened. Therefore, the load of the database system is reduced, the concurrency performance of the system is improved, and the requirements of daily services are better met.

A network resource management method, apparatus, medium, device, and product are disclosed. The method includes: receiving a first request, the first request requesting the allocation of an address block with a target mask length; determining whether an address block with the same target mask length exists in a free address block; if not, determining a first address block in the free address block, the first address block having a mask length less than and closest to the target mask length; and recursively splitting the first address block in half until a target address block with a mask length equal to the target mask length is obtained. Therefore, by adjusting the address block allocation processing logic, traversal of free address blocks is avoided, improving the response speed to the first request. Furthermore, as long as there is sufficient address block space, a suitable target address block can be generated, reducing allocation failures caused by address space fragmentation.

This application provides an anomaly risk identification method, apparatus, electronic device, medium, and program product, relating to the application of large-scale models in fintech scenarios, and applicable to the fields of big data technology, artificial intelligence technology, and fintech. The method includes: constructing a user profile based on historical transaction data of a target account; constructing an account transaction graph based on real-time transaction data of the target account; identifying a target transaction path corresponding to the target transaction based on the account transaction graph; and identifying anomaly risks of the target transaction based on the user profile and the target transaction path.

The invention discloses a distributed data table migration method and device, equipment and a medium. The method comprises the following steps: cutting source table data to obtain a plurality of sub-files; sampling the sub-files according to a sampling proportion to obtain sampling data; fragmenting the sampled data by adopting a fragmentation rule and a fragmentation key of the target data table to obtain a target fragmentation proportion of the sub-files; determining a target file proportion queue of the sub-files from the candidate file proportion queues according to a target fragment proportion based on the fragment proportion associated with the candidate file proportion queues, and storing the sub-files in the target file proportion queue; according to the candidate file proportion queue, the data capacity of the sub-files, a first migration queue and a second migration queue, selecting the sub-files from the candidate file proportion queue and moving the sub-files to the first migration queue; and storing the sub-files in the first migration queue in a target data table in parallel. According to the embodiment of the invention, the data migration efficiency is improved.