134 results about "Matched field" patented technology

The invention discloses a network diagnosis method based on a software defined network (SDN). The method includes the steps that a switchboard sets the rule of debug option of a flow table item according to a flow table debug setting command sent by a controller; the switchboard matches the key field of the message heading with the matching field of the flow table item, and judges whether the flow table item matched with the message is set up with a debug option field or not; if yes, the switchboard executes relevant debugging operations according to the content of the debug option field, and the operations include, but not limited to, sending the matching message and the contextual information to the controller; and the controller proceeds network diagnosis according to the message and the contextual information. The invention further discloses a network diagnosis system and equipment based on the SDN. With the technical scheme provided by the invention, the cycle for positioning a network problem is accelerated, the quality of the network is improved, and the operating maintenance cost of the network is reduced.

Some embodiments of the invention provide a switching element that receives a packet and processes the packet by dynamically generating a flow entry with a set of wildcard fields. The switching element then caches the flow entry and processes any subsequent packets that have header values that match the flow entry's non-wildcard match fields. In generating the flow, the switching element initially wildcards some of all of match fields and generates a new flow entry by un-wildcarding each match field that was consulted or examined to generate the flow entry.

A pattern-based data matching system matches pattern-based data. The data matching system generates a regular expression pattern for input datasets and describes similarity measures between the generated patterns. The data matching system analyzes an input dataset in terms of symbol classes, generalizing input values into a general pattern to allow identification or extrapolation of overlap between input datasets, aiding in matching fields in databases that are being merged and in learning a pattern for an input dataset. For each sequence of data values, the present system computes a compact pattern describing the sequence. Embodiments of the data matching system comprise noise reduction and repetitive pattern discovery in the input dataset and calculation of recall and precision of the generated pattern.

The invention discloses a method for positioning a water sound pulse signal matching field based on a frequency domain least squares method. The method comprises the following steps of 10) measuring and calculating a sound field of a double-array element hydrophone by using a sound field propagation model, i.e. determining a search range of a sound source, within an observation range, performing grid point division on the observation range, obtaining grid areas, and for each grid area, by using the sound field propagation model and an ocean environment parameter serving as the input value of the sound field propagation model, measuring and calculating through the sound field propagation model to obtain channel pulse response, which is generated by excitation on each hydrophone, of the sound source in each grid area; and 20) according to the water sound pulse signal received by the double-array element hydrophone and the measured and calculated channel pulse response through the sound field propagation model, performing matching field positioning on a target. With the adoption of the positioning method, the water sound pulse signal can be still positioned under the condition that the prior information of a transmitting signal is not enough, and the problems caused in a traditional multi-sensor array processing way are overcome.

An embodiment of the invention discloses a flow table updating method executed by a forward device. A route indicated by an updated flow table is a second forward route. The second forward route comprises a forward device. The method includes that the forward device receives a new flow tale item transmitted by a controller. The new flow table item comprises a matching field, a label, new priority and new operation. The label identifies the flow table item carrying the label and indicates the second forward route, the new priority is used for indicating the priority of the new flow table item, and the new flow table item is used for indicating the forward device to execute new operation on messages of a business flow matched with the matching field.

The invention provides a field matching method and terminal equipment, and is applicable to the technical field of data processing. The method comprises the steps that if an aiming field name only comprises Chinese characters, according to a preset Chinese character encoding rule, analyzing and coding are carried out on Chinese phonetic alphabet data, character pattern structures and Chinese character component number and stroke number of each Chinese character in the aiming field name respectively, and a Chinese character comprehensive code string corresponding to the aiming field name is determined; based on the Chinese character comprehensive code string corresponding to the aiming field name, character similarity calculation is respectively carried out on Chinese character comprehensive code strings corresponding to all to-be-matched field names which only comprise the Chinese characters in to-be-matched field data, and field data corresponding to field names of which the field similarity is larger than a similar threshold value of a preset character in the to-be-matched field data is screened out. It is based on the fact that the Chinese character comprehensive code string ofthe field name is obtained through coding, and automatic matching screening is carried out on the to-be-matched field names and the aiming field name input by a user, therefore the matching and screening which are carried out on the to-be-matched field data are accurate and efficient.

The invention discloses a method and device for matching fields of a data table with data elements of a knowledge base, and the method comprises the steps of carrying out the word segmentation of thefields in the data table, and building the feature vectors of the fields; and searching a feature vector library of a knowledge base according to the feature vectors of the fields, carrying out similarity matching on the feature vector library and the feature vectors of the data elements in the feature vector library, and determining the matched data elements when the matching is passed. The embodiment of the invention can be applied to the preprocessing process when the data table is accessed, and the management efficiency and the accuracy are improved.

The invention provides a processing method and system based on a flow table. Flow table items containing matched fields and corresponding preset instruction sets are established, wherein the matched fields comprise data segments used for storing preset offset and preset length and masks, the matched fields and preset message data segments are correlated, and when messages are received, current message data segments corresponding to the preset length are acquired according to the position, corresponding to the preset offset, of the matched fields of the flow table items in the messages; the current message data segments are matched with the preset message data segments; when match succeeds, the correlated preset instruction sets are called to process the messages, a protocol independent match (PIM) mode is provided, in other words, the messages can be processed from the preset matched fields when the protocol type of new service is not known, and the problem that at present, new service can not be deployed easily because flow table items supported by matched service do not exist is avoided.

The invention discloses a flexible customized comparison method. According to the method, data comparison is conducted by defining master data and matched fields in the data in the data comparison process and combining a master data stream, a comparison rule of fields is set by customizing two forms which need to be compared and the fields which need to be compared, and a system marks data with differences according to the rule set by a user. According to the flexible customized comparison method, a comparison result can be calculated only by defining the comparison rule between the fields of the master form and the slave form, and the comparison efficiency of different data forms is greatly improved.

The invention provides an information query method and an information query device for associated data, and the method comprises the steps: responding to a data query instruction, obtaining a field inthe data query instruction, and querying a target position of a target data table corresponding to the field from a first index structure; wherein the index structure represents an index relationshipamong a plurality of first data tables associated with each other, and the target data table is one or more of the plurality of first data tables associated with each other; obtaining a matching field matched with the field from a data storage space according to the target position; and obtaining a first data record corresponding to the matching field.

The invention provides a HiNOC data flow processing system and a method. The method includes the following steps: (1) the HiNOC data flow processing system filters and classifies data flow according to matched rules and divides the data flow into several matched fields; (2) attributes of the matched fields are located; and (3) the located matched fields are stored in corresponding locating positions in a priority queue. The system achieves L2/L3/L4 data flow processing functions of a high-speed coaxial access network supported by an HINOC protocol in a hardware mode, effectively guarantees service quality of various services of an EOC network, achieves fairness of band width distribution, meets requirements of large-capacity data flow throughout, is high in data flow processing efficiency, can carry out corresponding processing on data packets according to different service flow priorities and achieves non-dependence of hardware design on network specific functions.

The invention relates to a content delivery method based on a software defined network and a name routing technology, and belongs to the technical field of communication. The method includes the following steps : a user request data packet is sent to a gateway device; the gateway device performs deep data packet detection on the user request data packet to obtain a content name in the data packet, maps the content name as a content ID, and fills to an optical field of a data packet IP header; an OF switch receives the data packet processed by the gateway device, and performs matching operation on the content ID in the data packet according to matching fields in an OpenFlow flow table item issued by an SDN controller; if matching is successful, the OF switch executes forwarding operation according to an instruction field in the flow table item; and a cache server performs content delivery for the data request of the user. Otherwise, the controller selects an optimal path based on a global network view and issues the OpenFlow flow table to the OF switch that the path passes. The content delivery method provided by the invention can reduce complexity of a router and data packet processing delay, and can be well fused with an existing IP network and OpenFlow protocol.

The invention discloses an SDN (Self-Defending Network)-based remote flow mirroring control method, an implementation method and related equipment, and relates to the field of communication. The control method is used for implementing a remote flow mirroring function for monitoring network traffic in an SDN. The control method comprises the steps of: determining a mirroring path between a mirroring source switch and a mirroring destination switch according to remote flow mirroring configuration information and network topology information; and sending a mirroring flow table to each switch in the mirroring path, so that each switch outputs a monitored target service flow in a mirroring manner from the mirroring source switch to the mirroring destination switch according to the mirroring flow table, wherein the mirroring flow table carries matching field information specified for the target service flow and forwarding action information corresponding to each switch.

A system and method for matching and assembling records is provided. One embodiment of the invention assembles records by applying a method for grouping records based on matching fields, assembling a new record as a composite of the matched records, and then repeating the grouping, matching and assembling steps in a cascade where the matching grouping and assembling steps are modified as a function of the cascade step and the assembled records created in earlier steps.

The invention relates to a multifunctional worktable for electric power overhaul, and belongs to the technical field of electric power overhaul supporting tools. The multifunctional worktable for the electric power overhaul consists of a worktable cabinet and a foldable worktable, wherein a foldable rack, a tool fixedly placing table surface and an overhauler kit storing table surface are installed inside the worktable cabinet. The worktable cabinet can be unfolded and used as a worktable, and the foldable worktable is folded and can be put into the worktable cabinet, so that the multifunctional worktable for the electric power overhaul is convenient to store and transport; tools and spare parts used by an overhauler can be spread and placed on the worktable, so that the operation of the overhauler is facilitated, and after the overhaul, the tools and the spare parts together with the worktable cabinet can be put into worktable cabinet, loaded onto a vehicle and transported; the worktable cabinet is simple in structure and convenient to operate and use; the problems that in the prior art, the overhauler is inconvenient to operate, the field environment dirties and damages the tools and the spare parts, and after the overhaul, the tools and the spare parts are troublesome to check and gather up and easy to lose because no matched worktable for the field electric power overhaul exists are completely solved; and a blank that during the conventional electric power routing inspection, no matched field worktable exists is filled.

The invention discloses an underwater sound matched field localization method based on compressed sensing. Firstly, the search range of a sound source is determined, the sound field function at grid points is calculated according to an underwater sound signal received by an array and a sound field propagation model, and matching field localization is performed on a target; sparse reconstruction is performed on the received signal according to the compressed sensing theory; the signal is reconstructed with a smooth 10 norm method; the reconstructed signal is optimized and solved, and the reconstructed signal which most approximates an original signal is obtained. With the adoption of the method, the most essential characteristic of the sound source signal can be extracted, the noise removal effect is realized, and the localization accuracy is improved.

The invention relates to an OpenFlow multidimensional data matching and searching method based on FPGA. The matching and searching method comprises dividing a match field into a two-dimensional arraystructure wherein a domain key is used as a row address, a rule index is used as a column address, realizing an efficient match field classification search method and a system through a parallel and pipelined process mode. According to the method, a dynamic and efficient data updating, extension of multi-domain long field, a mask matching and searching are supported while an efficient search is realized, and a future re-expansion of the match domain can be met. According to the OpenFlow multidimensional data matching and searching method based on FPGA, the function that a software updates andprocesses a rule is also unloaded while the efficient rule searching is met, a problem that the processing efficiency of the software is low and a deficiency that a TCAM (Telecommunications Access Method) device cannot be efficiently updated are overcomed based on an implementation of the FPGA hardware.

The invention discloses a method for realizing clothes style identification and recommendation based on clothes contour and shape tracking. The method comprises the following steps: 1) through an pictures recognition color separation dictionary, carrying out color marking processing on clothes pictures to obtain processed clothes filled pictures; 2) through the pictures recognition color separation dictionary, carrying out recognition processing on the clothes pictures processed in the step 1) to realize corresponding marking of the clothes types; 3) carrying out contour tracing on the clothes pictures processed in the step 2) to obtain contour feature values of the clothes; and 4) according to contour match, carrying out clothes recommendation on the clothes pictures processed in the step 3) and the clothes type marks obtained in the step 2) based on association rules. For the defects in the smart costume matching field, the method can realize costume matching recommendation from the perspective of clothes type and clothes version joint analysis, thereby realizing intelligent recommendation without manual intervention.

The invention discloses a realization method and system for a software defined networking based on application layer forwarding and relates to the field of software defined networking (SDN). The method comprises following steps: a flow chart for SDN is designed on the basis of application layer information forwarding and protocol packet header of a second layer to a fourth layer matching; the flow chart in the SDN frame is expanded to the application layer; matching fields of the flow chart for the SDN comprises one or more matching unit and each matching unit is defined by a quintuple wherein the quintuple comprises five fields: "position", "length", "data characteristic", "data information", and "mask scope"; after the flow charge is designed, through the flow chart data forwarding for the SDN, the forwarding based on the traditional second to fourth layer and the application layer are simultaneously supported. By use of the method and system, forwarding based on the traditional second to fourth layer and forwarding based on the application layer are simultaneously supported.

The invention discloses an operation platform and a maintaining method for a database. The operation platform comprises an authorization module used for carrying authorization setting for different business modules in the operation platform respectively and generating corresponding authorization information sheets; an inquiry module used for receiving an inquiry command and searching corresponding stored operation business information based on business module names and/or business module labels in the inquiry command; a modification module used for receiving a modification command, carrying out field matching for modified contents in the modification command and the searched operational business information and modifying corresponding information of matched fields based on the modified contents; an email module used for generating a corresponding modification log based on the modified contents, generating a prompting email about data change based on the modification log and sending the prompting email. The operation platform and the maintaining method for the database can improve flexibility, expandability and mobility of the maintenance of the database.

A Computer Information Database System includes a software update and patch audit subsystem that manages computer profile data using system grouping and audit specification criteria. The subsystem thus selects a particular group of computers using the grouping criteria, and further selects from within the group the computers that pass or fail the applicable audit requirements. A given computer passes the requirements if the computer has installed thereon the specified software updates and patches that are applicable to the computer operating system platform. Otherwise, the computer fails. The audit subsystem may instead select particular computers using the audit specification criteria and then using the grouping criteria further select the subset of these computers that belong to a particular group. Further, the audit specification criteria may be set differently for the respective groups. Also, the grouping criteria and/or the security audit criteria may change without adversely impacting the operations of the subsystem. The audit system uses database tables and views that include value-to-match fields for either or both of the grouping and the audit specification criteria, and also software update or patch specific information and/or operating system specific information. One table includes group and operating system information for the respective computers, another table includes entries for the respective updates and patches that are installed on the respective computers, and another table includes entries that together specify the security audit specifications for the respective groups. Using the tables, the system produces views that relate, for example, to failing computers, what updates or patches the respective failing computers are missing, which or how many computers are failing within a particular group.