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204results about How to "Speed up query" patented technology

Time-interval-based feature identification and fast search method for hotspot path

The invention discloses a feature identification and fast search method for a hotspot path based on route big data, relates to a network path searching method and in particular relates to a method for performing hotspot path identification and search in a road network according to historical route big data. The invention provides a set of core features of a hotspot path and the feature identification method of the hotspot path. The method comprises a vector markup method for path heat and a ranking mechanism based on the path heat; an index mechanism is provided, so that the frequency of query on the route big data and the cost of input/output (I/O) of a disk in the process are reduced. Moreover, the method for rapidly querying the hotspot path based on the time interval comprises the following steps of: determining the starting point, destination and interested time interval and calculating the hotspot path, which meets the conditions, according to the historical route big data. The reasonable definition of the hotspot path is given, the hotspot path query at any time interval is provided, and the method is an important supplement to traditional path query methods and can well provide core technical support for various services based on positions.
Owner:GUANGZHOU HKUST FOK YING TUNG RES INST

RFID (Radio Frequency Identification Device) based seafood supply chain traceability system under exclusive shop direct sales model

The invention discloses an RFID (Radio Frequency Identification Device) based seafood supply chain traceability system under an exclusive shop direct sales model, comprising a client, a server and a backend database which are all in network connection; the client comprises RFID reader-writers, an RFID electronic label and a client computer, wherein the RFID reader-writer is in network connection with a plurality of RFID electronic label networks, and a plurality of RFID read-writers are in network connection with the client computer; the server comprises a culture subsystem, a processing subsystem, a delivery subsystem, an exclusive shop subsystem, a consumer and controlling authority subsystem and a management subsystem, wherein the management subsystem is respectively connected with the culture subsystem, the processing subsystem, the delivery subsystem, the exclusive shop subsystem and the consumer and controlling authority subsystem, and the culture subsystem, the processing subsystem, the delivery subsystem, the exclusive shop subsystem and the consumer and controlling authority subsystem are in network connection. The invention has the advantages of high speed, high efficiency, convenient management, capability of tracking relevant information of each link of a supply chain, and the like.
Owner:SOUTH CHINA UNIV OF TECH

Independent transparent security audit protection method facing real-time database

The invention discloses an independent transparent security audit protection method facing a real-time database. An interface which is supplied to an application system by the real-time database is used as an access point; a demand for protection and the operation limitation are converted into security protection functions; and corresponding interfaces are replaced by the security protection functions by using a HOOK and a remote thread injection technology, so that transparent gain security audit is realized. An authority of a user is managed according to a role mechanism based on a security area and quickly calibrated through an object operation two-dimensional authority table, so that an access control method suitable for the real-time database is found. A sequence number is led out according to an interface for fusing configuration information, so that configuration is realized securely and conveniently; an original log is quickly generated by using bit operation; the log generation and acquisition speed is increased by combining inter-thread message transmission; a buffering pond is introduced; the speed of reading and writing a log file is increased by using a divided webpage set management strategy; and the whole performance is improved by using separation arrangement.
Owner:华北计算机系统工程研究所

Method and system for acquiring passive optical network (PON) element information

The embodiment of the invention discloses a method and system for acquiring passive optical network (PON) element information. The method comprises the following steps that: OLT (Optical Line Terminal) equipment automatically discovers and acquires unregistered ONU (Optical Network Unit) information of the downlink communication connection of PON ports of the OLT equipment, and records the unregistered ONU information; an unregistered ONU acquisition module acquires information of all the PON ports of the OLT equipment according to the IP (Internet Protocol) address of the OLT equipment, acquires the unregistered ONU information of the downlink connection of all the PON ports of the OLT equipment and the uplink port information of the PON ports from the OLT equipment, and stores the IP address of the OLT equipment, the acquired PON port information, the unregistered ONU information under the PON ports and the corresponding uplink port information of the PON ports in a database; and installation and maintenance personnel inquires the installed ONU information, PON port information and uplink port information from the database through a mobile terminal, and compares the obtained information with information of a construction worksheet to determine whether or not the ONU is installed correctly and whether or not the states of corresponding PON ports and uplink ports are normal. According to the embodiment of the invention, the information inquiry speed and the installation testing speed of each PON network element can be increased.
Owner:CHINA TELECOM CORP LTD

Time series database system based on column storage

ActiveCN110362572AImproved feature depth integrationHigh-speed index functionSpecial data processing applicationsDatabase indexingOn columnQuery optimization
The invention discloses a time sequence database system based on column storage. The time sequence database system comprises: an SQL (Structured Query Language) parser, wherein the SQL parser is usedfor converting SQL into an abstract syntax tree through parsing; a logic plan generator which is used for generating a logic query plan by utilizing the abstract syntax tree, wherein the logic query plan is expressed by a relation algebra; a query optimizer which is used for optimizing the query plan by utilizing the state information of the database and outputting the rewritten query plan; an executor which is used for executing the query plan in a block iteration mode and is responsible for interacting with the storage layer to obtain data queried by a user; and a storage engine which is used for storing data in a row and column manner. According to the invention, data in the database is stored in a column mode; based on combination of column storage and rocksdb, high-speed insertion data characteristics and an indexing function of a traditional database are achieved, in the aspect of an executor, part of operators are improved to be deeply combined with characteristics of a storageengine, and meanwhile, new characteristics of a modern processor are used for accelerating query.
Owner:ZHEJIANG BANGSUN TECH CO LTD +1

A CMR model for uniformly retrieving cross-media information

The invention discloses a CMR model for uniformly retrieving cross-media information, and aims to provide a cross-media retrieval model with accurate and rapid information. The method is realized through the following technical scheme: a multi-modal media information semantic feature unified expression and association module queries heterogeneous information input by the input and cross-media datamodule; the multi-modal semantic features are mapped into the same feature space and a multi-modal semantic association rule is constructed based on the multi-modal semantic feature extraction resultand the mapping from the bottom-layer features to the high-layer semantic features, thereby realizing the association between the bottom-layer features and the high-layer semantic features of the cross-media information and the association of the high-layer semantics of different modal information; the cross-media data index construction module is used for establishing a multi-dimensional retrieval index for the multi-modal data characteristics; the cross-media retrieval model construction module realizes unified retrieval of multi-modal information based on ontology, semantic network and knowledge graph technologies; and conflict detection and self-organization of retrieval results are realized through a multi-modal retrieval result association verification and organization module.
Owner:10TH RES INST OF CETC

Palm print database search method based on quantum algorithms

The invention provides a palm print database search method based on quantum algorithms. Four different quantum algorithms are respectively used in the three most important stages of palm print recognition. The search method comprises the following steps that 1, a palm print image is filtered by a quantum adaptive median filtering algorithm, and a fact can be observed from a filtering effect contrast chart that a better filtering effect can be obtained by the quantum adaptive median filtering algorithm utilized in the invention than a classic algorithm; 2, the characters of the palm print image are extracted by quantum Fourier conversion based on quantum parallelism, all palm print characters can be extracted by only one quantum Fourier conversion operation, and an analysis result shows that the extraction speed of the palm print characters is raised by the algorithm under the condition of well reserving palm print details; and 3, the palm print image is matched by a quantum set operation and a Grover algorithm. In comparison with the classic algorithm which requires N times of operation, the matching algorithm provided by the invention has the advantage that the position of the target palm print image can be found by only 1 / 2 N times of operation, and the probability of finding the position of the target image in the palm print database by the algorithm is close to 1.
Owner:HENAN POLYTECHNIC UNIV

Album-based information recommendation method and device and computing equipment

InactiveCN108038161AAvoid the problem of not clicking to view recommended informationIncrease the likelihood of viewing the appropriate informationStill image data retrievalAdvertisementsInformation repositoryInformation type
The invention discloses an album-based information recommendation method and device, computing equipment and a computer storage medium. The method includes the steps of acquiring pictures and/or videos in an album of a user; conducting image feature analysis on the pictures and/or frame pictures extracted from the videos, and determining a user label of the user according to an image feature analysis result; conducting semantic analysis on the user label, and obtaining at least one information type which meets the demand of the user according to a semantic analysis result; querying an information library of the corresponding type according to the information types to obtain to-be-recommended information matched with the user label; recommending the to-be-recommended information to the user. In this way, the information which the user is interested in can be found, the problem is solved that the user does not click or view recommendation information since the relevance degree between the recommendation information and the interest and hobbies of the user is low, and the probability that the user views the corresponding information is increased.
Owner:BEIJING QIHOO TECH CO LTD

Grid voltage monitoring and prediction system and method based on geographic information system

The invention provides a grid voltage monitoring and prediction system and method based on a geographic information system and belongs to the field of grid voltage monitoring technologies. The system comprises a basic information setting module, a map service module and a voltage monitoring and prediction module. The method includes the steps that monitoring data are preprocessed according to historical voltage data of a monitored object and current voltage monitor running status parameters; a voltage prediction model is established; according to the voltage prediction model, the voltage change trend of a monitoring point within future requested time is predicted, if the prediction result exceeds the upper limit range and the lower limit range of voltage of the monitoring point, an alarm prompt is displayed at the position, on a map view, of the monitoring point, and the alarm prompt is also displayed at a corresponding position of a thematic layer where a monitoring point administrative department to which the monitoring point belongs is located. Mapping of grid voltage monitoring and visualization of operating data are achieved, effective early warning is provided for grid voltage abnormities, and grid equipment can be conveniently adjusted, overhauled and scheduled before the abnormities occur.
Owner:NORTHEASTERN UNIV

Trojan horse scanning method and system

The invention relates to a Trojan horse scanning method, which comprises the following steps of: obtaining files to be scanned; extracting the attribute information of the files to be scanned one by one from the obtained files to be scanned; and comparing the extracted attribute information with the stored attribute information, judging whether the attribute information of the files to be scanned is the same as the stored attribute information or not, if not, scanning the files to be scanned corresponding to the extracted attribute information. According to the Trojan horse scanning method and system, when the attribute information of the files to be scanned is different from the pre-stored attribute information, the files to be scanned are safely scanned so as to judge whether the files to be scanned is identified as a normal state or not, the files to be scanned with the attribute information same as the pre-stored attribute information is not safely scanned, and the probability that the files to be scanned with the attribute information same as the pre-stored attribute information is not amended is very high, therefore, the number of the files needing to be scanned is greatly reduced, the resource consumption is flexibly reduced, the security of the files is ensured, and the scanning speed of the files is improved.
Owner:TENCENT TECH (SHENZHEN) CO LTD
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