74 results about "Group strategy" patented technology

The invention discloses an automatic-guided-vehicle dispatching control method based on the genetic algorithm, and relates to the technical field of automatic-guided-vehicle control methods. The automatic-guided-vehicle dispatching control method includes the following steps that 1) an automatic-three-dimensional-warehouse mathematical model is established; 2) on the basis that cargo-out-in-conveying tasks are carried out with the grouping strategy, the established model is solved with the basic genetic algorithm, the genetic operation of the basis genetic algorithm is modified, and the height of a path of an automatic guided vehicle is shortened. According to the automatic-guided-vehicle dispatching control method based on the genetic algorithm, the multi-AGV dynamic adjusting method based on the genetic algorithm is adopted, and when the out-in tasks with the large logistics quantity exist in an automatic three-dimensional warehouse, an optimized scheme that multiple AGVs are dispatched for the cargo-out-in-conveying tasks, plugging and idle running of the AGV are reduced, and the efficiency of a conveying system is improved.

The invention discloses an upgrade file download method, equipment and system. The method comprises the following steps: after acquiring configuration information transmitted by various terminals by a server, determining equipment groups that the various terminals belong to and the classification of master-slave devices in various equipment groups by the server according to an equipment group grouping strategy, a master-slave equipment classification strategy and each of the configuration information; for each terminal as primary equipment in each equipment group, downloading an upgrade file from the server; for each terminal as slave equipment in each equipment group, transmitting information of a terminal as the primary equipment in the equipment group to the terminal by the server; and downloading the upgrade file by each terminal as the slave equipment from the terminal as the primary equipment. According to the upgrade file download method provided by the invention, since the terminals are divided into a plurality of equipment groups and master-slave equipment distinguishing is performed on the terminals, only terminals as the primary equipment in various equipment groups transmit an upgrade request to the server, so that the number of upgrade requests received by the server is reduced, which is beneficial to reducing the processing burden of the server; and after that, the server only transmits upgrade file data to the terminals as the primary equipment in various equipment groups, so that the network load is reduced.

The invention relates to a convex optimization and multi-target particle swarm-based UWB positioning method and belongs to the field of wireless communication networks. When that non-line-of-sight errors exist in TDOA measurement values and cannot be directly identified is assumed, a grouping strategy is put forward for subjecting the TDOA measurement values to random grouping operation, that the number of measurement values in each group satisfies minimum requirements for TDOA positioning, and grouping measurement value data is used as input data for a multi-target particle swarm optimization algorithm. Semi-definite programming relaxation is adopted for converting non-convex and non-linear TDOA problems into convex optimization problems, and a convex optimization object function is used as a fitness function for a multi-target particle swarm algorithm. Fitness values can be calculated conveniently and rapidly, effects exerted on positioning precision by the non-line-of-sight errors can be dispersed, range finding errors caused by non-line-of-sight interference during UWB signal transmission processes can be reduced and even eliminated, and effects exerted on positioning performance by selection of reference base stations can be prevented.

The invention relates to a reversible data hiding method based on a pixel grouping strategy, comprising the steps of: a transmitting party dividing every three adjoining pixels of carrier image into one group, marking whether the group is an embedded pixel group by utilizing the absolute value of the difference value among the pixels, ensuring one group characteristic bit for the each embedded pixel group; compressing the marked group characteristic bit to generate redundancy space to carry additional secret information by utilizing the characteristic that the adjoining pixel groups frequentlytrend to be consistent, and simultaneously embedding the secret data and the data for resuming the image into the pixel groups capable of being embedded with the switch operation of the pixel gray value in the pixel group; and a receiving party judging whether the pixel group is loaded with the data bit according to the pixel grouping with the same key and the absolute value of the pixel difference value in the group, determining the secret bit loaded by judging the grouping characteristic of the pixel group loaded with the data bit and resuming an original image with uncompressed characteristic. The method has higher visual hiding performance and statistics hiding performance.

The invention belongs to the technical field of network safety, and particularly to an attack and defense evolutionary game analysis based network defense action decision method. The attack and defense evolutionary game analysis based network defense action decision method comprises the steps of introducing an excitation factor of a same game group strategy dependence relationship to build a network attack and defense evolutionary game model; performing balanced solution on the network attack and defense evolutionary game model to obtain different balance points in an attack and defense evolution process; and determining an optimal defense strategy based on the balance points; and performing stability analysis on the balance points to obtain a correspond game evolutionary trend. Accordingto the method, the excitation factor is introduced, the dynamic evolution process is copied to describe the network attack and defense process, and the network attack and defense evolutionary game model based on an improved evolutionary game theory is built; evolutionary balanced solution is carried out for the circumstances that the attacker and the defender have multiple selectable strategies, the obtained balance points are subjected to the stability analysis, the network attack and defense game model and the application scope are extended, the practicability and accuracy of the model are improved, and important guiding significance is provided for the network safety technology.

The invention discloses a multi-specification plate-oriented rectangular part layout method. The method includes the steps of: 1. inputting initial data of plates and rectangular workpieces; 2. carrying out the multi-specification plate layout through a multi-specification plate layout module according to the specifications and the number of the rectangular workpieces; 3. obtaining a plate combination sequence through a plate combination construction algorithm according to the total area of workpieces, the specifications and the number of the plates; performing broadened selection of plate combinations on the plate combination sequence to obtain a plate combination; and then calculating whether the plate combination can discharge all the workpieces through a grouping strategy-based single-plate layout algorithm in the multi-specification plate layout module, if the plate combination cannot discharge all the workpieces, tracing back to the broadened selection of plate combinations, and if the plate combination can discharge all the workpieces, outputting the plates subjected to the layout. The multi-specification plate-oriented rectangular part layout method provided by the invention breaks the limitation of unreasonable selection of only original rectangular parts and unreasonable layout of single plates in the prior art, and has a wider range of application.

The invention provides a parallel metadata acquisition system, which is improved on the basis of an existing parallel metadata acquisition frame by combining network technology, mobile Agent technology and an OAI (Open Archives Initiative) frame model to improve the metadata acquisition rate and realize high-efficiency federated search service. By adopting a grouping strategy, the parallel metadata acquisition system realizes parallel acquisition of metadata outside and in groups, thereby improving the acquisition rate on the whole. Additionally, the metadata are stored in balanced classification, so that the system can perform parallel search when responding to a search request, and the searching speed and accuracy are improved.

The invention discloses a multi-strategy parallel logistics resource scheduling method. The method comprises: obtaining order input information, obtaining a plurality of packages to be transported andavailable transport vehicles for distribution by utilizing an order grouping strategy and a vehicle selection strategy; matching strategies according to the vehicle packages; selecting a matched package for transportation of the transportation vehicle; the transport vehicle needs to meet the transport limiting conditions of the parcels; finally, loading strategies according to orders, selecting an order for loading into an available vehicle in the matched package. Through designing multiple algorithm strategies in a logistics scheduling system for parallel computing, the problems that in theprior art, various practical limiting conditions are not considered in the logistics transportation and distribution process, a single scheduling strategy is adopted, consequently, the logistics transportation and distribution system is prone to falling into local optimum, an approximately optimal solution cannot be found, and a scheduling algorithm cannot fall onto the ground are solved, the generated scheduling algorithm is more practical, resource waste is reduced, and the transportation efficiency is higher.

The invention discloses a method and system for screening and grouping echelon utilization batteries. The method comprises the following steps of acquiring discharge energy, energy efficiency, directcurrent internal resistance and open circuit voltage of a plurality of decommissioned power batteries; selecting a plurality of decommissioned power batteries as echelon utilization batteries according to a preset battery screening strategy; and screening and grouping the plurality of echelon utilization batteries according to a preset screening and grouping strategy. By using the discharge energy, the energy efficiency, the direct current internal resistance and the open circuit voltage of the echelon utilization batteries as parameters, the screening and grouping method suitable for the decommissioned power batteries in the energy storage application is established, and the decommissioned power batteries can be accurately classified, so that the echelon utilization is carried out on thebatteries, the utilization rate of the batteries is improved, and the resources are saved.

The invention relates to an automatic group optimization system for power battery boxes in EV battery swap stations and an operating method thereof. The system comprises a power battery information real-time processing module, a grouping strategy library configuration module, a battery group information database, and a power battery box group auto-optimization scheduling module, wherein the power battery information real-time processing module is used for acquiring information of a battery box swapped from an EV in real time and transmitting, analyzing and storing the acquired information, the grouping strategy library configuration module is used for providing the power battery box group auto-optimization scheduling module with a grouping strategy configuration entry, the battery group information database is used for receiving query of the power battery box group auto-optimization scheduling module and changes to the power battery group information, and the power battery box group auto-optimization scheduling module is used for receiving a swap command, acquiring a grouping strategy and a calculation priority, and changing existing group information that dissatisfies the grouping strategy according to the demand of the grouping strategy. The system has the advantages that the battery box grouping strategies are reasonably configured, the group information of battery boxes is dynamically adjusted, the problem that a whole battery group stops due to changes of individual performances is solved, and power batteries are more available.

The invention discloses an air traffic flow regulating and control method based on an improved local search strategy. The method comprises the steps of according to the large-scale characteristics of the air traffic flow and collaborative evolutionary ideas, firstly dividing the big problem into a plurality of small problems, finally completing evolution on the big problem by evolving each small problem, adopting a dynamic grouping strategy in the problem grouping process, enabling the problems with the strong relevance to be assigned to the same group, in the evolution problem of each sub problem, adopting a differential evolution method, introducing a concentration regulation mechanism, improving the diversity of a non-dominated solution, and in order to increase the search capability of the solution space, introducing the local search strategy. According to the large-scale characteristics of the problems, the traditional local search strategy is improved, and as the experimental evidence shows, the solution better than the traditional method can be found.

The invention discloses a random playing method which comprises the following steps: grouping multimedia documents to be played according to a predetermined grouping strategy; and playing each group of multimedia documents in a random sequencing mode according to a shuffle algorithm. The invention also discloses a multimedia playing device. By utilizing the scheme of the invention, the calculated amount required for sequencing can be reduced greatly, the hardware requirements for the multimedia playing device can be lowered, and simultaneously the numerical precision of the hardware of the media playing device can satisfy the requirement of random sequencing.

The invention provides a participant capability based excitation method for a crowdsourcing task of a group, and the method mainly includes pre-estimation, grouping and payment calculation stages. In the pre-estimation stage, the task is initiated, rules, including a crowdsourcing time limit T, a task sample representing one workload and a payment calculating method, are published in a crowdsourcing platform, a participant estimates expected reachable workload according to the capability of oneself and back feeds the workload to the platform. In the grouping stage, the platform carries out grouping after receiving feedback from the participant, according to a principle that the pre-estimated workloads of members in the same group are equivalent, participants of the same amount are selected randomly from each interval to form different groups, and it is ensured that strengths of different groups are balanced approximately. In the payment calculating stage, bonus of groups and basic salaries are calculated. According to the invention, a capability balanced grouping strategy is used, a grouping mechanism is fairer, and groups of lower capability and the possibility that people of lower capability in the group are passive in work are avoided effectively.

The embodiment of the invention provides an interference signal coordination method and device. The method comprises the following steps of: acquiring first reference signal receiving power which is transmitted by a user terminal and used for measuring a serving cell by the user terminal and second reference signal receiving power which is acquired by measuring a target adjacent cell by the user terminal, obtaining a difference value; according to the first reference signal receiving power and the second reference signal receiving power, obtaining a difference value; according to the difference value, the second reference signal receiving power and a preset grouping strategy, determining an interference type of the user terminal to the target adjacent cell; and according to the interference type of the user terminal and a preset frequency band distribution strategy, adjusting the frequency band which can be used by the user terminal for the target adjacent cell, thereby achieving the interference grouping and frequency band adjustment of the user terminal, and completing the interference signal coordination.

The invention relates to a mobile stream media digital rights management system facing a multicast service, which adopts a multilayer encryption mechanism, a video watermark authentication mechanism, a logic grouping mechanism and the like based on compatible OMA DRM 2.0 standard. A multicast user logic grouping mechanism at a server end and a system processing flow of a client joining multicast service stream are the key content of the invention. The system has the advantages that: 1) the system is compatible with OMA DRM 2.0 and provides a solution of content protection for wide application of a mobile multicast stream media service in a third generation mobile communication system; 2) the system provides a multicast receiver logic grouping strategy, reduces bandwidth consumption for transmitting a plurality of secondarily-encrypted content keys and provides support for concurrent users; 3) the system adopts MD5 summary algorithm and the video watermark authentication technology to provide the data integrity and the accuracy verification in the multicast transmission process; and 4) the system embeds a removable watermark sequence into motion vectors of original video data, has low complexity of watermark related operations, and eliminates video quality reduction possibly caused by watermark embedding.

The invention discloses a three-dimensional-grid dual-watermark method based on a grouping strategy and neighborhood relationship positioning. In the invention, through firstly embedding a robust watermark and then embedding a fragile watermark, copyright protection and content authentication are performed on a three-dimensional model. For the robust watermark, the distribution characteristic of three-dimensional model vertexes is used to group the vertexes so as to embed watermark information. For the fragile watermark, the watermark is embedded by adjusting the geometrical relationship between model vertexes and a ring neighborhood. In the method, a dual-target optimization model is used to carry out dual-watermark coupling processing so as to solve the problem of mutual interference between the robust watermark and the fragile watermark. By using the method, the watermark is extracted without an original grid, and the robust watermark and the fragile watermark are not mutually interfered. And simultaneously, the robust watermark can resist common attacks and the attacks comprise geometric transformation, a noise, vertex reordering, simplification, and subdivision. The fragile watermark has a tamper positioning function.

The invention provides a method of implementing virtual switching on router equipment and the router equipment. The method comprises the following steps that at least one routed port is switched to a switch port, a media access control MAC address table and a message grouping strategy are configured, wherein the MAC address table is used for storing corresponding relation between an MAC address and a sending port and the message grouping strategy is used for grouping messages received by the router equipment according to a receiving port of the messages, furthermore, an exchange message carrying a target MAC address is obtained from the switch port, the obtained exchange message is added in an exchange message group according to the message grouping strategy, the sending port corresponding to the target MAC address is determined in the MAC address table according to the target MAC address, and lastly, the exchange message is sent through the sending port. Through a manner of software, the corresponding processing is carried out on the exchange message in the router equipment, so that the cost of a routing and switching all-in-one machine is effectively reduced, and expansibility and flexibility are further effectively improved.