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56results about How to "Extraction implementation" patented technology

Entity relationship extracting method of Zang language

The invention relates to an entity relationship extracting method of the Zang language. The method comprises the following steps: extracting training linguistic data from the Zang-Chinese text linguistic data information; constructing a Zang word vector model; acquiring an entity relationship characteristic vector from the Zang word vector model; using the entity relationship characteristic vector as an input to construct an entity relationship classification model based on a neural network; and applying multiple layers of characteristic extractions to the entity relationship characteristic vector, thereby finally acquiring a Zang language entity relationship classification. The extraction of the Zang language entity relationship is achieved by constructing the Zang word vector model, researching and solving lexical semantic characteristics and sentence characteristic vector expression methods of the Zang language entity relationship, and further constructing the Zang language entity relationship classification model, accordingly increasing the accuracy in the Zang language entity relationship classification, and providing technical supports and services to the researches in the fields of the Zang language knowledge mapping, question-answering system, information extraction, information search, and the like.
Owner:MINZU UNIVERSITY OF CHINA

Fault detection and identification method for civil aircraft system based on LSTM-AE depth learning framework

The invention discloses a fault detection and identification method for civil aircraft system based on LSTM-AE depth learning framework and relates to the technical field of condition monitoring and fault diagnosis of complex civil aircraft system, and can be used to realize the monitoring and identification of flight faults. The invention comprises the following steps: selecting time series dataof multi-state parameters of an aircraft in flight under a certain stable condition, and according to the characteristics of the monitored object, the time series data of state parameters under suitable conditions are selected for the training of the system reconstruction model, then the fault-free state of civil aircraft system is modeled and reconstructed by making full use of the long-time series-dependent memory ability of LSTM model. The fault monitoring and identification are realized by further analyzing the reconstruction error of its state parameters. The invention solves the problemof insufficient fault monitoring means of civil aircraft system, utilizes the advantage of deep learning in big data analysis to mine massive operation and maintenance data of civil aircraft, and provides important support for fault monitoring of civil aircraft system and route fault isolation.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Contaminated soil in-situ reparation system

The invention discloses a contaminated soil in-situ reparation system which is used for repairing the contaminated soil in situ. The contaminated soil in-situ reparation system comprises an extraction well, wherein a seal cover is paved on the ground surface of the contaminated soil; an opening of the extraction well is provided with a gas collecting cover in a sealed mode; an output line of the gas collecting cover is provided with a purification pipeline and a vacuumizing pipeline in parallel; the vacuumizing pipeline is provided with an electromagnetic valve, a vacuum pump, an air blower and an adsorption box; the purification pipeline comprises a purification tank connected to the output pipeline of the gas collecting tank; the pipeline close to the purification tank is provided with an extraction fan; a medicine storage tank is arranged beside the purification tank; the extraction well is internally fixedly provided with a heat insulation pipe which is provided with a heater; a communication lead of the heater penetrates through the heat insulation pipe internally, and extends to a power supply installed outside the ground surface. The system can be used for heating the contaminated soil in the same well, extracting toxic gases, purifying the toxic gases by utilizing a chemical agent so as to purify and repair the contaminated soil in situ.
Owner:XIAN ALL SAFE SCI & TECH

Remote sensing image change detection method based on dense connection and geometric structure constraint

The invention provides a remote sensing image change detection method based on dense connection and geometric structure constraint. The method comprises the steps: carrying out the preprocessing of afront-and-back-stage change detection input image, and comprises the calculation of an image normalization parameter, the normalization of a front-and-back-stage image, and the color correction of a back-stage image; dCGC-CD model training and testing are carried out, and change area information extraction is carried out on the remote sensing images in the early and later periods; wherein the DCGC-CD model comprises a front-and-back-stage change feature differential encoding module and a multi-branch geometric structure constraint decoding module, and the front-and-back-stage image change feature differential encoding module comprises a branch for an input front-stage image and a branch for an input back-stage image; the multi-branch geometric structure constraint decoding module comprisesthree branches; wherein the first branch is used for early-stage edge prediction, the second branch is used for change area prediction, the third branch is used for later-stage edge prediction, and the structures of the first branch and the third branch and the structure of the second branch interact through a loss function to effectively constrain a final change detection result through geometric structure information.
Owner:WUHAN UNIV

Information extraction method and device

The invention provides an information extraction method and device. The information extraction method comprises the following steps: obtaining a to-be-processed document; identifying a text and a table in the to-be-processed document; performing key information identification on the text based on a keyword identification algorithm, and determining document text key information; analyzing characters of cells in the table to obtain key information of the document table; fusing the document text key information and the document table key information, and determining an information extraction result of the to-be-processed document. According to the scheme, not only can the key information of a document text be extracted, but also the key information of a document table can be extracted; in a same to-be-processed document, document text key information and document table key information may be associated, and individual document text key information or individual document table key information may be incomplete, so that the document text key information and the document table key information can be fused to an obtain information extraction result of the to-be-processed document, the information extraction efficiency of the to-be-processed document is improved, and the integrity and accuracy of information extraction can be improved.
Owner:BEIJING KINGSOFT DIGITAL ENTERTAINMENT CO LTD

Method for identifying and extracting water conservancy space relation words

The invention discloses a method for identifying and extracting water conservancy spatial relationship words. The method comprises the following steps: acquiring a spatial relationship seed set basedon quantitative statistical characteristics; constructing an original syntax mode; generalizing a syntax mode, and generalizing a plurality of original syntax modes for expressing the same kind of spatial relationship into one mode, so that the number of modes is reduced, and the abstraction degree is improved; and based on the generalized syntax mode, realizing extraction of the spatial relationship. According to the method, the spatial relationship extraction problem in the field of water conservancy is concerned, automatic identification of the spatial relationship, construction of a spatial relationship word set, acquisition of a spatial relationship syntactic mode and extraction of a spatial relationship tuple are realized by utilizing a weak supervision method, and a large amount ofmanpower and time are saved. Water conservancy data resource extraction oriented to the spatial relationship is realized, free texts in the water conservancy field are converted into structured data,and large-scale and professional spatial relationship supplementation is carried out on the atlas, so that more accurate query service is provided for users.
Owner:HOHAI UNIV

Method and system for automatically extracting Chinese financial events based on graph attention network

The invention relates to a graph attention network-based Chinese financial event automatic extraction method and system, and the method comprises the steps: S1, obtaining the related data of a Chinese financial event and a financial domain dictionary from a related domain website, and carrying out the preprocessing of the obtained data; s2, constructing prototype events, manually marking financial event data of typical categories as seed data, and obtaining prototype events corresponding to each category; and S3, constructing a Chinese financial event automatic extraction model, classifying Chinese financial events to be classified, and extracting event elements. According to the method, small sample data can be utilized to expand Chinese financial event corpora, the problem of scarcity of Chinese event extracted corpora can be solved, and powerful data support is provided for related research; and meanwhile, the event extraction effect can be improved by utilizing the graph attention network and the bidirectional long-short-term memory network, and the prototype event and similarity calculation are combined, so that the demand of the model on the labeled sample can be greatly reduced, and the generalization ability of the model is improved.
Owner:BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY

Underwater plowing device for river regulation and restoration

The invention discloses an underwater plowing device for river regulation and restoration. The underwater plowing device comprises a body and is characterized in that a water flow driving mechanism is arranged on the upper portion of the interior of a shell, a plowing mechanism is arranged on the lower portion of the interior of the shell, a separating mechanism is arranged on the portion, located on one side of the plowing mechanism, of the lower portion of the interior of the shell, the water flow driving mechanism comprises a clamping assembly and a centripetal extraction assembly, the clamping assembly is arranged on the outer side of the centripetal extraction assembly, and the clamping assembly is in transmission connection with the centripetal extraction assembly; the plowing mechanism comprises a soil loosening assembly and a soil ploughing assembly, the soil loosening assembly is arranged on one side of the soil ploughing assembly, and the soil loosening assembly and the soil ploughing assembly are fixed; and the separating mechanism comprises an extraction assembly, and the extraction assembly is in transmission connection with the soil ploughing assembly. The underwater plowing device has the characteristics that when the water flow speed is high, a riverbed can be plowed in time, the depth of the riverbed is increased, flood is avoided, and garbage deposited at the bottom of the riverbed is collected.
Owner:SUZHOU BECKE ELECTRIC TECH CO LTD

Oxygen bomb and oxygen bomb air exhaust joint

The invention discloses an oxygen bomb and an oxygen bomb air exhaust joint. The oxygen bomb air exhaust joint comprises a joint body; a through hole for arranging and sealing the periphery of an oxygen bomb head of the oxygen bomb in a sleeving manner is formed in the middle part of the joint body; and the side wall of the through hole is provided with a joint air pipe which extends in the radialdirection and is arranged in a penetrating way. The oxygen bomb air exhaust joint is suitable for the oxygen bomb assembled by a needle valve with a solid structure and the oxygen bomb head providedwith a connecting air pipe on the side wall, and is used for realizing the vacuumizing operation of the oxygen bomb. During vacuumizing, firstly, the joint body is arranged on the oxygen bomb head ina sleeving manner; then, the needle valve is unscrewed with respect to the oxygen bomb head, so that the oxygen bomb air pipe, the connecting air pipe and the joint air pipe communicate with each other in sequence; and then, the oxygen bomb air exhaust joint is connected with vacuumizing equipment to realize the vacuumizing of the oxygen bomb. After vacuumizing, the needle valve is screwed with respect to the oxygen bomb head, and the oxygen bomb air exhaust joint is taken down. The oxygen bomb air exhaust joint is suitable for the oxygen bomb and the needle valve thereof, and is high in structural strength, corrosion resistance, excellent in tightness and long in service life.
Owner:长沙开元仪器有限公司
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