326results about How to "Dynamic" patented technology

The invention provides a four-dimensional flight track dynamic prediction method based on ADS-B information updating. By communicating with networks among ADS-B receivers, a ADS-B data decoding module is adopted to obtain real-time velocity information, height information, longitude information and latitude information of a flight, and consistency check is conducted on a predicted flight track and the real-time velocity, height, longitude and latitude of the flight, so that the dynamic, online and real-time flight track prediction capability is achieved. The method can provide important technical support for developing the automation and intellectualization of air traffic control and achieving the flight-track-based operation.

The invention relates to a dynamic self-organizing hierarchical routing method. The method is applied to the tree topology structure of a wireless sensor network, the problems of path failure and data transmission incapability due to node mobility or failure are solved, and the topology structure of the network can be dynamically regulated. The network is established by adopting a multi-branch-tree-based topology structure, and each node maintains a routing table of one level, and records a sub-tree topology structure taking the node as a root. The routing table is effectively updated by inserting a sequence number during node access application, so that the problems of repeated node numbers in the routing table of upper-level nodes are solved. Only when data cannot be transmitted, the routing tables reorganize the topology structures, and timely maintain the topology structures in the network, so that energy overhead, computing overhead and data transmission real-time performance are combined, the reliable transmission of the data is ensured, the overhead is reduced, and the advantages of a routing protocol and a routed protocol are utilized.

The invention discloses a secure certification and transaction method with the combination of a digital certificate and a one-time password. The method comprises two steps of: a secure certification method and a secure transaction method. The secure certification and transaction method specifically comprises the steps of: first, performing bidirectional certification between a client and a server on the basis of the digital certificate; then, realizing secure certification through the combination of the digital certificate and the one-time password on the basis of the bidirectional certification; and finally, realizing secure transaction through the combination of the digital certificate and the one-time password on the basis of the bidirectional certification. By the method, the identities of users are confirmed by combining the digital certificate and the one-time password so as to realize the secure login and secure transaction of various application systems. By the method, the digital certificate and the one-time password are organically combined, so that the safety hidden trouble caused by separately using the digital certificate or the one-time password is avoided, respective security advantages of the digital certificate and the one-time password are fully exerted, various attacks can be resisted, high security is achieved, the demand of various high security application in the network can be met, and the method has higher practical value and broad application prospect in the field of network security technology.

The invention relates to an intelligent early warning and prediction method for a soil slope danger. The method comprises the following steps: 1) a rainfall monitoring station is set in an onsite mode, and a soil penetration meter and a displacement meter are buried; 2) a rainfall condition, soil permeability and displacement data of the slope are acquired in real time and transmitted to a remote client; 3) the data are formatted and processed; 4) the weight size of data such as the rainfall condition, the soil permeability and the slope displacement influencing a slope safety factor is calculated; 5) a safety factor for each time period of the slope is determined; 6) the rainfall condition at each time period, the slope soil permeability factor and a relation among deformation, displacement and the safety factor are calculated, and a soil slope destruction happening time is predicted; 7) hidden destructed slope critical destruction and instability time are acquired, and disaster happening time is predicted; and 8) in combination with results from the sixth step and the seventh step, early warning and prediction are carried out on a slope danger. Compared with the prior art, the method can be used for carrying out soil slope danger early warning and prediction more reasonably, more quantitatively and more practically.

An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes, is capable of ensuring sufficient ion permeability even after attachment to electrodes, and further includes an adhesive porous layer having dynamic physical properties sufficient to withstand heat pressing and a uniform porous structure. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer that is formed on at least one side of the porous substrate and contains a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the adhesive porous layer has a porosity of 30 to 60% and an average pore size of 1 to 100 nm.

A control apparatus for a dynamic power transmission apparatus is provided. The dynamic power transmission apparatus includes a differential mechanism, an electric generator, an electric motor, and a fluid coupling. The electric motor is disposed at a position apart from a transmission path along which a dynamic power of an engine is transmitted to a driving wheel. The fluid coupling is disposed between the electric motor and the transmission path. The control apparatus includes an electronic controller configured to restrict a charge of an electric storage apparatus with an electric power generated by the electric generator, depending on a state of the electric storage apparatus, and control the fluid coupling to differentially rotate and to drive the electric motor by the electric power such that a dynamic power loss is generated in the fluid coupling, when restricting the charge of the electric storage apparatus.

The invention provides a scenario-based dynamic scheduling method for the heterogeneous execution of a mimic web server. The method comprises the following steps of: calculating an overall differencevalue between an offline actuator and an offline actuator; The attack probability table PA= {p1, p2,..., pl} of each type of attacker is obtained by counting the type set L of attacker and the attackmode policy set Nl of attacker l in the target scenario. The attack probability table PA= {p1, p2,..., pl} of each type of attacker is obtained. When attacker l launches an attack against any executor, the profit values Al and Dl of the attacker and the defender under various attack modes are calculated. The Stackelberg game model is mapped to a pseudo-web server to construct an objective functionfor solving the optimal scheduling policy. The overall difference value and the revenue values Al and Dl of the offensive and defensive sides are brought into the objective function to obtain the defender's optimal mixed strategy x. By constructing the objective function, we can get the dynamic scheduling strategy of pseudo-web server under different attack environments, which can give full playto the diversity, randomness and dynamic advantages of pseudo-web server, and effectively improve the security and resource utilization of the system.

The invention relates to the field of shower heads, in particular to a shower head capable of rotating upward and downward, which has a rotating type water spraying function. The shower head comprises a shower head body and a water spraying component, wherein the water spraying component is provided with an inclined water hole; an impeller is arranged below the inclined water hole; the impeller is axially positioned between the shower head body and the water spraying component; an upper rotating cover which convexly extends above the shower head body is fixedly arranged at the upper end of the impeller, and a lower rotating cover which convexly extends below the water spraying component is fixedly arranged at the lower end of the impeller; the upper rotating cover and the lower rotating cover rotate along with the impeller coaxially; and an eccentric water outlet is arranged on the lower rotating cover. After the technical scheme of the invention is adopted, water flow impacts the impeller from the inclined water hole of the water spraying component, the impeller drives the upper rotating cover and the lower rotating cover to rotate coaxially, and then, the water is sprayed out of the eccentric water outlet of the lower rotating cover in a rotating way to form rotating spray. Because the upper rotating cover and the lower rotating cover are arranged at the surface of the shower head, the upper rotating cover and the lower rotating cover rotate synchronously along with the water flow when in use, thus the three-dimension effect is very strong, and the visual effect is very good.

The invention discloses a commodity recommendation system and a commodity recommendation method. The system comprises a purchase record source module, a control device module, a filter module, a commodity pair frequency calculation device module and a frequent set database module. Each module is connected according to a network connection mode. The purchase record source module records information when a user purchases a commodity through a purchase record table. The control device module is used for providing an interface of each module and controlling access of data, issue of interruption and setting of a threshold, and can operate other modules. The filter module receives a set threshold from the control device module and carries out direct filtration on data which does not reach the threshold. The commodity pair frequency calculation device module is used for executing a calculation process in the method. The frequent set database module stores a final frequent database, and updates a source database in the purchase record source module. According to the method and the system, a common frequency set excavation scheme is utilized, a time factor is added, and dynamic performance is extremely strong when recommending the commodity.

The invention relates to ultrasonic detection for partial discharge, and provides a device capable of monitoring changing states of the partial discharge level at any time so as to describe characteristics of partial discharge from a plurality of perspectives. In the technical scheme, a sensor node on the switchgear and a coordinator node form a monitoring network of a tree-type topologic structure through a relay router arranged outside the switchgear; wherein the sensor node comprises an ultrasonic senor, an analog front-end filtration and amplification circuit, an A / D (analog-digital) converter, a sensor node microcontroller MCU module and a sensor node wireless radio-frequency module connected sequentially; and the coordinator node comprises a coordinator wireless radio-frequency module, a coordinator microcontroller MCU module and a coordinator GPRS (general packet radio service) module connected sequentially, wherein the coordinator GPRS module communicates with a GPRS module ofa remote monitoring center. The device is mainly applied in ultrasonic detection of discharge.

The invention relates to a switch cabinet local discharge transient-to-ground voltage detection system based on a wireless network, which is characterized in that: a signal collection unit is sequentially connected with a transient-to-ground voltage sensor, a filter circuit, an amplification circuit and an analog-to-digital conversion circuit in series, and an output end of the analog-to-digital conversion circuit is connected with a signal transmission unit; the signal transmission unit is provided with a general packet radio service (GPRS) transmitting device and a GPRS receiving device for receiving a signal transmitted by the GPRS transmitting device, a signal input end of the GPRS transmitting device is connected with the analog-to-digital conversion circuit of the signal collection unit, and an output end of the GPRS receiving device is connected with a data collection and analysis unit; the data collection and analysis unit adopts a computer or a high-speed digital signal processor (DSP) chip as a main processor; and a human-machine interface is used for displaying a detection result of the entire system. The switch cabinet local discharge transient-to-ground voltage detection system has high sensitivity of the sensors, can resist the interference, is safe, rapid and accurate to detect, is convenient for working personnel to operate and diagnose, and can realize the local discharge monitoring and location information collection of multiple parts inside a switch cabinet. Discharge fault can be discovered and eliminated in time.

The invention discloses an identity authentication method based on a dynamic trusted third party in an open network. By constructing an authentication system structure containing a trust decision-making database, the dynamic trusted third party and an entity joining the network service, the proposal leads an interactive entity not only to obtain necessary information related to identity authentication but also to obtain a trust feedback set of the trusted third party depended by the interactive entity when the interactive entity is carried out identity authentication; and according to the trust feedback set, the entity independently selects a trust decision-making function and calculates the reliability thereof. The proposal consists of four phases of identity authentication information collecting, identity authentication reliability calculating and judging, identity authentication information mutual judging and identity authentication information feed backing. The invention not only realizes dynamic control to the behavior of the trusted third party by the identity authentication entity in the open network, but also improves the reliability of identity authentication by carrying out reliability calculating and judging.

The invention discloses a method for a personalized recommendation of a Web text. The method comprises the following steps: performing feature extraction on a plurality of kinds of Web texts generated before a certain time t so as to obtain a feature matrix E of a Web text set, and then performing cluster so as to obtain n categories; besides, according to a time span hj from the time when a Web text oj in a Web text subset relevant to the behavior of a certain user ui before the time t to the time t, calculating out a preference influence degree dj to the user ui so as to obtain a pair of category number-influence degree cj of the Web text oj and generate a dynamic preference vector of the user ui; if the preference influence degree of the user and the category of the Web text to be recommended is found to be higher than or equal to a threshold value tan, recommending the Web text to be recommended to the user. According to the method disclosed by the invention, the dynamic influence changed with the time lapse of current preference from the historic behavior of the user is considered, and the method is more accurate in recommendation, has dynamic performance, and more conforms to the actual condition.

The invention discloses a networked multi-agent system distributed optimization control method based on reinforcement learning, which belongs to the technical field of system control methods. A Bellman equation with an integrator is provided for integral reinforcement learning (IRL). According to a non-strategy (Off-poly) method, different control strategy action control systems are applied, dataexploration is added, an optimal control strategy is obtained through iterative learning, a graph game is fused with Off-poly and IRL, and the consistency of networked multi-agents is ensured under the condition that a system model is completely unknown. The system comprises the following specific steps: (1) solving an optimization control problem based on IRL and Off-poly; (2) iteratively designing a distributed approximate optimal control strategy based on an approximate strategy; and (3) adopting simulation software and a multi-manipulator control system physical experiment platform, and correspondingly adjusting a theoretical method and a control technology according to simulation and physical experiment results.

The invention discloses a minor health website authentication system and a minor health website authentication method and belongs to the field of network techniques. The minor health site authentication system consists of an authentication server and an authentication router, and is characterized in that: the authentication router connects a client, the authentication server and a web server; the authentication server and the authentication router are set up in a network; the client accesses the web server through the authentication server and the authentication router; the authentication server performs health authentication on a website, authenticates websites as healthy, sub-healthy and bad websites, and adopts a webpage filtering mode by mutually combining and progressing three filtering modes of URL / IP filtering, keyword matching filtering and semantic preference-based intelligent filtering. Therefore, minors can directly access healthy websites on line and are forbidden to access bad websites. The minor health website authentication system and the minor health website authentication method have the characteristics of dynamism, real-time property and openness, realize effective isolation between users and bad network information, and can provide safe and green surfing environment for the minors and provide an effective solution for healthy surfing of the minors.

The invention discloses an automatic film label indexing method and an automatic indexing system. The automatic film label indexing method mainly comprises the steps that semantic film labels are generated and a semantic film metadata specification frame is formulated; an automatic film label indexing system is established, wherein the automatic film label indexing system generates and fills film transmission feature information semantic label vector codes into a semantic film label library according to the semantic film metadata specification frame. Accordingly, the shortcoming that manual indexing cost is very high, the indexing speed is low and the indexing is not suitable for online and real-time data information in the prior art is overcome, and the advantage 'personalized content-oriented active service' of network information resources is achieved, and the advantage of comprehensive, accurate and efficient indexing of a large quantity and a variety of film information having strong dynamic nature is achieved.

The invention provides a dynamic lightweight class trust evaluation method based on the Bayesian theory and the entropy theory, and belongs to the technical field of wireless sensor network security. The dynamic lightweight class trust evaluation method based on the Bayesian theory and the entropy theory includes the following steps: S1, an evaluation subject calculates the direct trust value of an evaluation object according to the Bayesian theory; S2, the evaluation subject updates the direct trust value of the evaluation object by means of attenuation factors and valid history memory periodically; S3, the evaluation subject calculates the confidence coefficient of the direct trust value of the evaluation object, and judges whether the confidence coefficient is larger than a certain threshold value to determine whether the indirect trust value of the evaluation object needs to be calculated or not; S4, the evaluation subject confirms the bang path of the recommendation trust values, confirms the weight of the recommendation trust values by means of the entropy theory, calculates the indirect trust value of the evaluation object, and calculates the comprehensive trust value of the evaluation object through the combination of the direct trust value and the indirect trust value of the evaluation object. The dynamic lightweight class trust evaluation method based on the Bayesian theory and the entropy theory is in accordance with the characteristics that sources such as capacity, calculation, and storage of network nodes are limited and has the advantages of being dynamic, adaptive, lightweight and the like.

The invention relates to an Android software user interface generating method and system and an Android application system. An interface is described by XML (extensible markup language) syntax independent of an Android original user interface system to generate an interface layout file; interface loading is performed according to the page layout file to generate an original interface; the original interface is copied to generate an interface instance; data resources are dynamically collected and bound to interface elements so as to update layout of the interface elements in real time; the interface instance is update according to the update interface elements; a user interacts with the interface instance to generate an interface event, and the interface instance is updated according to the interface event. The complete interface based on the XML and the script language is redesigned, and a dynamically-loadable, configurable and separable user interface system and a flexible user interface, namely a business behavior binding mechanism, are achieved. Businesses and interface logic are thoroughly separated, application behaviors, such as interfaces of an application and business flows, are updated and modified without re-releasing the application.

The invention discloses a resource polymerization method based on Agent; in computer and network technology wide application, resources scattered in a complex heterogeneous network become more and more, and the method can effectively gather the resources scattering in the distributed environment; the method comprises the following steps: configuring the resource polymerization method based on Agent in a distributed system; a task agent resolves and describes according to a user inputted task demand; a decision agent distributes the task to a corresponding service agent according to task description information; the service agent selects a resource agent in an Agent alliance to execute the task, a task execution result is returned to a user Agent, and displayed in a user interface. Communication between the service agent and the resource agent complies with an expansion contract net protocol, thus reducing communication load between Agents, and fast responding to the user task demand. The resource Agent can joint or withdraw from the Agent alliance, so dynamic characteristic is provided, thus enhancing resource polymerization method flexibility and scalability.

The invention discloses a force-induced response dynamic polymer. The polymer chain skeleton contains at least one force-sensitive group and at least one boron-free dynamic covalent bond, optionally contains at least one boron-containing dynamic covalent bond, and also optionally contains at least one supramolecular interaction; and under the action of mechanical force, the force-sensitive group in the dynamic polymer is subjected to chemical and / or physical change to realize force-induced response. According to the dynamic polymer, the force-sensitive group with a force-induced response characteristic, the boron-free dynamic covalent bonds with different dynamic properties, the optional boron-containing dynamic covalent bond and the supramolecular interaction are introduced, so that the force-induced response dynamic polymer material with a wide controllable range, a rich structure and various properties can be prepared. The force-induced response dynamic polymer can be widely appliedas a functional coating with a force-induced response function, a self-repairing material, an energy storage device material, an energy absorbing material, a photoelectric device material, a mechanical probe and the like.

The invention relates to a color ring-decorating wheel hub and a manufacture method thereof. The color ring-decorating wheel hub is characterized by comprising a wheel hub which is painted with primer and is subjected to color paint drying. At least one groove is arranged on the outer surface of the wheel hub and exposes the metal color, and clear lacquer, the color of which is different from that of the wheel hub, is sprayed in the groove and is dried to be attached to the groove firmly. The method comprises the following steps of: grinding a wheel hub; carrying out surface cleaning: degreasing, washing, spraying and drying; electrostatic dusting: solidifying powder by drying; regrinding the wheel hub, carrying out the cleaning again; after the primer is sprayed to the wheel hub and is leveled by infrared flash, spraying black paint and drying and solidifying the coating; the whole wheel hub is characterized in that the red clear lacquer is sprayed to the groove and is dried and solidified. The black wheel hub still presents black after being painted with the red clear lacquer, and the groove represents corresponding red color after being painted with the red clear lacquer. The color ring-decorating wheel hub can be produced in bulk and has uniform surface treatment thickness, high smoothness, bright color and attractive appearance; the manufacture method has high efficiency and low cost; bright color rings can be seen when automobiles run, and the bright color rings can be matched with automobiles of different colors to improve the grade of the automobiles.

The invention discloses a split differential tail wing control mechanism of a flapping-wing micro air vehicle. The control mechanism is characterized in that a torsional steering engine is mounted on a machine body frame and connected to one end of a torsional steering engine rocking arm; a torsional connection rod is connected to the other end of the torsional steering engine rocking arm; a torsional shaft rocking arm is connected to the other end of the torsional connecting rod and connected with a torsional shaft; a front bearing and a rear bearing are mounted on the machine body frame; the torsional shaft is fixedly connected to a tail vane mounting surface; the tail vane mounting surface is connected with a left tail vane and a right tail vane through two tail vane hinges respectively; a left tail vane machine and a right tail vane machine are mounted on the tail vane mounting surface; a left tail vane rocking arm is arranged on the left tail vane; a right tail vane rocking arm is arranged on the right tail vane; the left tail vane machine is connected to one end of a left tail vane machine rocking arm; a left tail vane connecting rod is connected to the other end of the left tail vane machine rocking arm; the left tail vane rocking arm is connected to the other end of the left tail vane connecting rod; the right tail vane machine is connected to one end of a right tail vane machine rocking arm; a right tail vane connecting rod is connected to the other end of the right tail vane machine rocking arm; the right tail vane rocking arm is connected to the other end of the right tail vane connecting rod. The control mechanism has the advantages of high control efficiency, simple structure, good reliability and the like.

The invention discloses an energy-absorbing method based on a combined hybrid cross-linked dynamic polymer. The energy-absorbing method realizes energy absorption by using the combined hybrid cross-linked dynamic polymer containing at least two boron-containing dynamic covalent bonds and common covalent cross-linking formed by a common covalent bond. Through introduction of the boron-containing dynamic covalent bonds with different dynamic natures and combination of the boron-containing dynamic covalent bonds with the common covalent bond, polymeric materials of abundant structures and with awide controllable range and diversified properties can be prepared. Due to the difference between the different boron-containing dynamic covalent bonds in the dynamic polymer, the dynamic polymer canpresent hierarchical dynamic reversible effects, so the dynamic polymer shows good energy dissipation and energy absorption characteristics and has toughening, damping and impact-resisting effects onmaterials in specific structures. The dynamic polymer of the invention is applicable to the body protection of people in exercises and daily life, the body protection of the military police, explosionprevention, protection in airborne landing and aerial delivery, collision prevention of automobiles, anti-impact protection of electronic products and electric appliances, etc.

The invention relates to the technical field of municipal comprehensive emergency management, in particular to a digital, structured and intelligent retrieval and reconstruction method for emergency plans. An emergency plan is subjected to multidimensional multilayer structured division, and retrieval is performed by utilizing multidimensional multiple attribute designation and key words; and combined with an emergency site, a preliminary emergency plan is subjected to real-time data and trend, situation and risk analyzing to be reconfigured. The retrieval and reconstruction method for emergency plans solves problems of the matching accuracy and the like of emergency plans and actual emergency events, and can be widely applied to the determination of emergency plans of emergency events.

An amplifier circuit having an amplifier chain comprising an input port and output port with a plurality of interconnected gain stages positioned in between. The output of one interconnected gain stage provides an input to the next stage within the amplifier chain. The output port coupled to the plurality of interconnected gain stages such that the amplifier circuit output is generated from any one or more of the interconnected gain stages.

The invention relates to a correlation method of distributed access points in a wireless Mesh network, which belongs to the technical field of the wireless Mesh network access. The method is characterized in that each access point of a wireless Mesh network adopts transmission of an uplink data message and a downlink data message to carry information needed to be collected by the access point, including the number of indirect users of the relevant access point and the average required bandwidth of the indirect users; during the access to the network, the user obtains a list of all accessible access points at first and then obtains various types of information needed for calculation in a relevancy algorithm from each access point in the list, including the number of direct users of the relevant access point, the number of indirect users of the relevant access point, the average required bandwidth of the direct users and the average required bandwidth of the indirect users; and then the user calls an optimal relevancy access point calculated in the relevancy algorithm and initiates relevancy to the access point. The mechanism disclosed in the invention can make the fulfillment rate of the average bandwidth of the relevant access point relatively balanced on the basis of ensuring a certain fulfillment rate of the required bandwidth of the user, thereby ensuring the load balance of the wireless Mesh network.

The invention discloses a dynamic polymer thermoplastic elastomer. A polymer molecule of the thermoplastic elastomer comprises a multi-segment structure with multiple end segments and a single middlesegment, wherein the end segments are mutually mixed and / or can independently form a crystalline phase and / or a phase incompatible with the middle segment so as to form end segment-based reversible split-phase physical crosslinking; and the middle segment is in a amorphous state, partial chain segments of the middle segment contain at least one side group and / or side hydrogen bond groups on side chains, and the side hydrogen bond groups can form inter-chain supermolecule hydrogen bond dynamic crosslinking. By virtue of the dynamic reversibility of hydrogen bonds, the dynamic polymer thermoplastic elastomer has good tenacity, energy dissipation, self-repairing property and the like and can be widely applied to the fields of self-repairing sealing components, sealants, flexible elastomers and the like.

The invention discloses dynamic riding watching equipment in a cinema, which is characterized in that in a dynamic cinema provided with a spherical screen and at least two floors, a hanging rail is arranged at the top of each floor along the front and back directions of the cinema, a traveling trolley capable of moving along the hanging rail is arranged on the hanging rail, a multivariant dynamic control platform is fixedly arranged at the bottom of the frame of the traveling trolley, and a seat is suspended at the bottom of the dynamic control platform through a seat hanging frame. The invention has compact structural design, convenient seating, abundant simulated action, strong moving sense and easy control and adjustment.

The invention discloses a distributed intelligent routing method for unmanned aerial vehicle network slices. The method comprises the following steps: modeling an unmanned aerial vehicle network intoa network model; setting constraint conditions for the network model, wherein the constraint conditions comprise time delay limitation, rate limitation and packet loss probability limitation; establishing a constrained network model into a multi-constraint optimization model during slicing oriented to low time delay; solving the multi-constraint optimization model through a reinforcement learningmodel to obtain a solving value, and in the solving process, independently storing the link condition of each communication node and a neighbor node and updating the link condition in real time by each communication node; and carrying out dynamic routing selection according to the solving value and the link condition. The method effectively solves the problems that in the prior art, a routing method cannot adapt to the characteristics that an unmanned aerial vehicle network has high time delay requirements and the network dynamically changes at any time. According to the invention, the technical blank is filled, and better conditions are created for the unmanned aerial vehicle network environment.

The invention provides a user behavior learning method based on a PST (Probabilistic Suffix Tree) in a wireless network. The method comprises the steps that a user behavior based on a business is divided into no business, a session business, an interaction business and a streaming media business according to different network QoS (Quality of Service) requirements of the business in the wireless network; a quaternary user behavior state sequence is generated; and an appropriate network resource can be selected for providing a high-quality service for a user according to a predicted business behavior by learning to construct the PST to train the user behavior sequence, and adopting the possible user behavior during a time period of a variable-length Markov model prediction. The method can improve the accuracy of user behavior prediction, is simple, and convenient to realize, and has a very good application prospect.