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31 results about "Vector process" patented technology

Range-extended target adaptive detection method under inverse Gaussian texture complex Gaussian clutter

The present invention belongs to the technical field of radar target detection and discloses a range-extended target adaptive detection method under inverse Gaussian texture complex Gaussian clutter for the target detection under a wideband radar system. The method comprises a step of establishing the binary hypothesis model of radar target detection, a step of using a spherically invariant vector process model to construct an inverse Gaussian texture complex Gaussian clutter signal, a step of using a generalized likelihood ratio to obtain a range-extended target adaptive detector under the inverse Gaussian texture complex Gaussian clutter, a step of determining the detection threshold of the adaptive detector, a step of obtaining radar echo data and determining the detection statistic amount of the radar echo data according to the adaptive detector, and a step of judging whether the radar echo data has a range-extended target according to the detection statistic amount and the detection threshold, and if the detection statistic amount is larger than the detection threshold, determining that the radar echo data has the range-extended target, otherwise, determining that the radar echo data has no range-extended target.
Owner:XIDIAN UNIV

Named entity identification method, named entity recognition device, storage medium and electronic equipment

The invention provides a named entity recognition method, a named entity recognition device, a storage medium and electronic equipment. The method comprises the steps of obtaining a to-be-recognized target text, and determining a target segmented word of the target text; determining a character image of a target character contained in the target segmented word, and determining a glyph vector of the character image; generating a character vector according to the glyph vector and the semantic vector of the target character, and generating a word vector according to all character vectors in the target segmented word; and performing named entity identification processing on the target text based on the word vector of the target segmented word, and determining a named entity in the target text.According to the named entity recognition method, the named entity recognition device, the storage medium and the electronic equipment, glyph features are introduced in the word vector generation process and named entity recognition can be performed more accurately in combination with the glyph features and semantic features. The recognition accuracy can be improved, and the defect of inaccuraterecognition caused by insufficient modeling information of rare words can be overcome.
Owner:北京香侬慧语科技有限责任公司

LDPC linear programming decoding method based on acceleration alternating direction multiplier method

The invention discloses an LDPC linear programming decoding method based on an acceleration alternating direction multiplier method. The LDPC linear programming decoding method mainly solves the problems that an existing message class transmission algorithm has the error floor and can be easily influenced by a short link. According to the technical scheme, the LDPC linear programming decoding method comprises the steps that first, decoding parameters are initialized; second, iteration updating is carried out on an auxiliary vector, a solution vector and a Lagrangian multiplier vector in the decoding parameters in sequence; third, acceleration processing is carried out to correct the solution vector and the Lagrangian multiplier vector; fourth, according to the corrected solution vector, infinite norms of vectors corresponding to all check nodes are calculated, and the maximum infinite norm is worked out; fifth, whether the decoding process ends or not is judged according to the obtained maximum value and the number of times of iteration; sixth, the solution vector processed through the last time of iteration is output to serve as a decoded code word. The LDPC linear programming decoding method is high in convergence rate and free of the error floor, efficiency of a decoding module in a communication system can be remarkably improved, and the LDPC linear programming decoding method is applicable to the technical field of communication.
Owner:XIDIAN UNIV

Method for comprehensively evaluating key parameter errors of complicated mechanical systems

The invention discloses a method for comprehensively evaluating key parameter errors of complicated mechanical systems. The method includes rejecting useless parameters by means of analyzing evaluation influence factors, and then constructing systems for evaluating the key parameter hierarchical structure errors of the complicated mechanical systems on the basis of the idea of AHP (analytic hierarchy processes); converting sorting computation on evaluation indexes into pairwise comparison on the evaluation indexes by the aid of characteristic vector processes on the basis of improved Delphi processes, measuring the importance of the various evaluation indexes by the aid of scales, computing pairwise ratios and constructing judgment matrixes; allocating weights of indexes for comprehensively evaluating key parameters and then comprehensively evaluating and analyzing the key parameters by the aid of power exponent comprehensive evaluation processes; acquiring influence of parameters of bottom layers on parameters of each upper layer according to power exponent evaluation models and ultimately acquiring influence of the key parameters on the precision of the complicated mechanical systems by parity of reasoning. Vectors corresponding to characteristic values of the judgment matrixes are relative weight number sorting relation vectors of the evaluation indexes. The method has the advantage that the influence degrees of input parameters on the precision of the complicated mechanical systems can be effectively analyzed by the aid of the method.
Owner:NANJING UNIV OF SCI & TECH

Bidirectional GRU relation extraction data processing method and system, terminal and medium

The invention belongs to the technical field of relation extraction, and discloses a bidirectional GRU relation extraction data processing method and system, a terminal and a medium, and the method comprises the steps: carrying out the preprocessing of a reference data set SemEval-2010Task 8; performing word vectorization on the corpus through an EMLo pre-training model; performing preliminary denoising processing on the word vectors through a multi-head attention mechanism; coding the word vector by using a Bi-GRU network to obtain a hidden layer vector containing context information in the sentence; the hidden layer vector serves as input and is transmitted to a keyword attention layer, and the attention weight is calculated by combining output of the hidden layer with the entity pair relative position feature and the entity hiding similarity feature; and inputting the hidden layer vector processed by the attention mechanism into a classification layer to obtain a final relation extraction result. Experimental results show that the model provided by the invention achieves the most advanced performance without any other NLP tools.
Owner:HUBEI UNIV OF TECH

Method for concealing time-domain errors on basis of inter-frame modes and movement repair

InactiveCN103313064AAppropriate complexityMotion Vector RecoveryTelevision systemsDigital video signal modificationTime domainMotion vector
The invention relates to a method for concealing time-domain errors on the basis of inter-frame modes and movement repair. The method is mainly technically characterized by comprising steps of classifying processes for concealing the errors according to inter-frame mode information of upper, lower, left and right correct receive blocks adjacent to a current damaged macro block and respectively repairing damaged movement vectors; acquiring reconstruction values of the damaged block in reference frames by the aid of a movement compensation process and repaired movement vectors. The method has the advantages that the inter-frame mode information of the correct receive blocks adjacent to the damaged macro block is sufficiently utilized, the movement vectors of the damaged block are repaired by the aid of the different processes for concealing the errors, the movement compensation process on the basis of sub-blocks is used for complicated areas, a boundary matching process is used for relatively flat areas, a zero movement vector process is used for static areas, accordingly, the movement vectors of the damaged block can be accurately recovered, an error concealment effect is improved, the algorithm complexity is proper, and the instantaneity of the method in mobile application can be guaranteed.
Owner:ACAD OF BROADCASTING SCI SARFT +1

Multi-intention recognition method and system based on bert + bolstm + crf and xgboost models

The invention belongs to the technical field of natural language understanding, and particularly relates to a multi-intention recognition method and system based on bert + bolstm + crf and xgboost models. According to the technical scheme, the bert is used for processing the preprocessed data set to obtain the dynamic word vector, and the dynamic word vector is different from a word vector obtained by using a word2vec or glove model in the past. Word vectors output by the Bert model have dynamic characteristics, and the problem that one word is polysemy can be solved. The word vector is converted into a sentence vector through bi < l > stm + crf, a bi < l > stm + crf model can process context text information with a long distance at the same time, and an optimal sentence vector prediction sequence is obtained through the relation of neighbor labels. An Xgboost model is used in the aspect of recognition of the subjective map, and the model is high in recognition precision and more flexible, so that the model is used in the subjective map. After all the ideograms are obtained, a TF-I DF model is utilized to select a standard intention, and the standard intention is taken as an intention judgment basis. And inputting the sentence vector processed by the bert + bi l stm + crf model into a new bert model, and finally outputting a sub-intention.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Program stream control method for vector processor and system

The invention discloses a program stream control method for a vector processor and a system. The method includes steps of outputting a vector data processing state when a vector data processing unit executes a vector data operation instruction outputted by a fetch unit; acquiring a the vector data processing state by the aid of a program stream control unit; generating a program stream changing mark according to the vector data processing state; starting to sequentially obtain instructions from program stream changing addresses by the aid of the fetch unit according to the program steam changing mark; and outputting acquired instructions to the vector data processing unit. The system comprises the fetch unit, the vector data processing unit and the program stream control unit, the vector data processing unit consists of a state generating unit used for generating the vector data processing state, and an output end of the state generating unit is connected with the program stream control unit. The program stream control method for the vector process and the system have the advantages that a program stream can be changed during processing, vector data processing time is saved, data processing volume is reduced, and data processing efficiency is high.
Owner:NAT UNIV OF DEFENSE TECH

Temporal Error Concealment Method Based on Inter Mode and Motion Repair

InactiveCN103313064BAppropriate complexityMotion Vector RecoveryDigital video signal modificationTime domainMotion vector
The invention relates to a method for concealing time-domain errors on the basis of inter-frame modes and movement repair. The method is mainly technically characterized by comprising steps of classifying processes for concealing the errors according to inter-frame mode information of upper, lower, left and right correct receive blocks adjacent to a current damaged macro block and respectively repairing damaged movement vectors; acquiring reconstruction values of the damaged block in reference frames by the aid of a movement compensation process and repaired movement vectors. The method has the advantages that the inter-frame mode information of the correct receive blocks adjacent to the damaged macro block is sufficiently utilized, the movement vectors of the damaged block are repaired by the aid of the different processes for concealing the errors, the movement compensation process on the basis of sub-blocks is used for complicated areas, a boundary matching process is used for relatively flat areas, a zero movement vector process is used for static areas, accordingly, the movement vectors of the damaged block can be accurately recovered, an error concealment effect is improved, the algorithm complexity is proper, and the instantaneity of the method in mobile application can be guaranteed.
Owner:ACAD OF BROADCASTING SCI SARFT +1

Method and system for measuring interruption duration of embedded system at high precision and medium

The invention discloses a method for measuring interruption duration of an embedded system with high precision, and relates to the technical field of computers. Comprising the following steps: S1, specifying an interrupt exception type corresponding to an exception vector number; s2, when the interrupt exception occurs, the system jumps to a general exception entry function of the system; s3, the general exception entry function judges exception types through exception type numerical values; s4, calling an interrupt vector processing macro function in the interrupt entry function; s5, at the inlet of the interrupt vector processing macro function, firstly executing the interrupt duration measurement starting macro function to obtain an input interrupt timestamp, then calling and executing the interrupt processing function to obtain an output interrupt timestamp, and finally executing the interrupt duration measurement ending timing and data statistics function macro function at the outlet of the interrupt vector processing macro function; and S6, after the interrupt processing is completed, returning to a system state. According to the non-invasive performance analysis method, hardware resources can be fully utilized and the debugging efficiency can be improved on the premise of not modifying a program function flow.
Owner:GUANGZHOU YIHUI INFORMATION TECH CO LTD

Linear Programming Decoding Method for ldpc Codes Based on Accelerated Alternating Direction Multiplier Method

The invention discloses an LDPC linear programming decoding method based on an acceleration alternating direction multiplier method. The LDPC linear programming decoding method mainly solves the problems that an existing message class transmission algorithm has the error floor and can be easily influenced by a short link. According to the technical scheme, the LDPC linear programming decoding method comprises the steps that first, decoding parameters are initialized; second, iteration updating is carried out on an auxiliary vector, a solution vector and a Lagrangian multiplier vector in the decoding parameters in sequence; third, acceleration processing is carried out to correct the solution vector and the Lagrangian multiplier vector; fourth, according to the corrected solution vector, infinite norms of vectors corresponding to all check nodes are calculated, and the maximum infinite norm is worked out; fifth, whether the decoding process ends or not is judged according to the obtained maximum value and the number of times of iteration; sixth, the solution vector processed through the last time of iteration is output to serve as a decoded code word. The LDPC linear programming decoding method is high in convergence rate and free of the error floor, efficiency of a decoding module in a communication system can be remarkably improved, and the LDPC linear programming decoding method is applicable to the technical field of communication.
Owner:XIDIAN UNIV

Method and apparatus for vector process facing sliding window

The present invention relates to high efficiency processor designs, in the field of digital signal processing and intelligent computing, a method for slide window vector processing is disclosed, includes a set of vector instructions, a vector instruction designates a first source vector to perform corresponding operation with a second source vector according to an operation type, a sliding windowoperation skip step number is specified by a value in a third scalar register, and result elements obtained by the operation are sequentially written into a result vector register. The invention alsodiscloses a device for sliding window vector processing. A method and apparatus for processing a sliding window vector, The traditional vector and windowed vector operations are uniformly represented,and the vector processing is realized by a unified vector instruction and control method, which improves the performance of the vector processing device, and can flexibly represent various sliding window vector operations, and meets the needs of many new tasks with window operations.
Owner:北京智涵芯宇科技有限公司

Program stream control method for vector processor and system

The invention discloses a program stream control method for a vector processor and a system. The method includes steps of outputting a vector data processing state when a vector data processing unit executes a vector data operation instruction outputted by a fetch unit; acquiring a the vector data processing state by the aid of a program stream control unit; generating a program stream changing mark according to the vector data processing state; starting to sequentially obtain instructions from program stream changing addresses by the aid of the fetch unit according to the program steam changing mark; and outputting acquired instructions to the vector data processing unit. The system comprises the fetch unit, the vector data processing unit and the program stream control unit, the vector data processing unit consists of a state generating unit used for generating the vector data processing state, and an output end of the state generating unit is connected with the program stream control unit. The program stream control method for the vector process and the system have the advantages that a program stream can be changed during processing, vector data processing time is saved, data processing volume is reduced, and data processing efficiency is high.
Owner:NAT UNIV OF DEFENSE TECH

FFT code bit inverse sequence algorithm vectorization implementation method and device based on shuffling operation

The invention discloses an FFT (Fast Fourier Transform) code bit inverse sequence algorithm vectorization implementation method and device based on shuffling operation. The method comprises the following steps of: loading data which needs to be subjected to code bit inverse sequence processing into respective q registers in p vector processing units VPE of a vector processing part VPU to form vector data; configuring a shuffling mode memory, and generating a plurality of shuffling rules to indicate the position of the data source of the current position; traversing and selecting each current shuffling mode; based on shuffling rules corresponding to the current shuffling modes, shuffling vector data in respective q registers in p vector processing units (VPEs) loaded to a vector processing unit (VPU) until all the shuffling rules are traversed; and finally outputting vector data obtained by shuffling operation. The method is simple to implement, high in implementation efficiency, low in power consumption and good in effect, and can give full play to the calculation performance of the vector processing component to implement simple and efficient FFT'code bit reverse sequence 'calculation.
Owner:NAT UNIV OF DEFENSE TECH
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