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279 results about "Data science" patented technology

Data science is a multi-disciplinary field that uses scientific methods, processes, algorithms and systems to extract knowledge and insights from structured and unstructured data. Data science is the same concept as data mining and big data: "use the most powerful hardware, the most powerful programming systems, and the most efficient algorithms to solve problems".

Empirical mode decomposition and deep learning hybrid model-based wind speed prediction method and system

InactiveCN106126896ASmall differenceImprove forecast accuracySpecial data processing applicationsInformaticsData setAlgorithm
The invention discloses an empirical mode decomposition and deep learning hybrid model-based wind speed prediction method and system. The method comprises the following steps of S1, decomposing an original wind speed time sequence according to empirical mode decomposition so as to obtain a plurality of intrinsic mode functions; S2, establishing a training data set and a test data set for each intrinsic mode function; S3, inputting a training sample, in the training data set, of each intrinsic mode function into a stack type coding network to perform training so as to obtain a wind speed prediction sub-model; S4, inputting the test data set into corresponding wind speed prediction sub-models to perform prediction so as to obtain prediction output values of the wind speed prediction sub-models; and S5, performing combination superposition processing on the prediction output values of the wind speed prediction sub-models to obtain a final overall prediction output value. According to the method and the system, the prediction precision and robustness of the prediction models are effectively improved and higher short-term wind speed prediction precision can be achieved.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Unsupervised anomaly detection, diagnosis, and correction in multivariate time series data

ActiveUS20200064822A1Electric testing/monitoringNeural architecturesAnomaly detectionDeconvolution
Methods and systems for anomaly detection and correction include generating original signature matrices that represent a state of a system of multiple time series. The original signature matrices are encoded using convolutional neural networks. Temporal patterns in the encoded signature matrices are modeled using convolutional long-short term memory neural networks for each respective convolutional neural network. The modeled signature matrices using deconvolutional neural networks. An occurrence of an anomaly is determined using a loss function based on a difference between the decoded signature matrices and the original signature matrices. A corrective action is performed responsive to the determination of the occurrence of the anomaly.
Owner:NEC CORP

Malware detection system with contextual analysis

A computerized method for detecting malware associated with an object. The method includes operations of analyzing an object to obtain a first set of attributes, where the first set of attributes include one or more characteristics associated with the object. Furthermore, the object is processed with a virtual machine to obtain a second set of attributes. The second set of attributes corresponds to one or more monitored behaviors of the virtual machine during processing of the object. Thereafter, a threat index is determined based, at least in part, on a combination of at least one attribute of the first set of attributes and at least one attribute of the second set of attributes. The threat index represents a probability of maliciousness associated with the object.
Owner:FIREEYE SECURITY HLDG US LLC

Dynamically updated predictive model

ActiveUS7979380B2Digital computer detailsChaos modelsData science
Data of at least one of past values and present values of a system is consolidated from a plurality of sources. Virtual data of future values of the system is generated by applying the acquired data to a predictive model. Additional acquired data is received. The virtual data is dynamically updated by applying the additional acquired data to the predictive model.
Owner:APPLIED MATERIALS INC

Telecommunication fraud prevention system and method based on big data and machine learning

InactiveCN106970911APrevent fraudulent incidentsCombating Telecom FraudSemantic analysisSubstation equipmentData informationMobile end
The invention discloses a telecommunication fraud prevention system and method based on big data and machine learning. The system comprises a mobile terminal, a big data analysis terminal and a fraud interdiction governance terminal, wherein the mobile terminal is used for performing fraud detection determination on current telecommunication data according to predetermined constraint rules when receiving a short message or an incoming call message, a machine learning algorithm is adopted to detect whether the telecommunication data is a telecommunication fraud, and if the detection result is that the telecommunication data is determined as a telecommunication fraud, fraud data information is uploaded to the big data analysis terminal; the big data analysis terminal is used for performing real-time statistics on the fraud data information uploaded and reported from the mobile terminal and sending fraud early-warning information to the fraud interdiction governance terminal according to a bank card account or/and a phone number with the number of received reports exceeding a certain threshold value; and the fraud interdiction governance terminal is used for taking corresponding measures in time to interdict occurrence of a telecommunication fraud event when receiving the fraud early-warning information. The system can unite the mobile terminal, an operator, a public security institution, a bank and other institutions, quick and effective prevention can be realized, and the telecommunication fraud can be cracked down in time.
Owner:INST OF SOFTWARE APPL TECH GUANGZHOU & CHINESE ACAD OF SCI

Question-answer interaction method for children stories

The invention discloses a question-answer interaction method for children stories. The method comprises the following steps: 1, a story interaction system judges an interaction type at the beginning of interaction between a child and the story interaction system, executes a step 2 if actively telling a story, and executes a step 3 if the story is requested; 2, the system acquires historical interaction information and child model information, and selects a story category and a story text from a children story library and a story question bank according to the historical interaction information and the child model information; 3, the system plays the selected story; 4, the system executes intelligent interaction operation under the guidance of intelligent story interaction control; 5, the system executes corresponding operation according to candidate SIDL interaction operation selected in the step 4; 6, the system acquires feedback information from the child, and records the historical interaction information; 7, the system updates the historical interaction information, and recalculates a story model according to the updated historical interaction information; 8, the system judges whether a story conversation ending condition is met or not, ends a story conversation if the story conversation ending condition is met, otherwise turns to the step 4 for re-execution.
Owner:中科国力(镇江)智能技术有限公司

Method and device for processing network information

ActiveCN103425703AImprove click-through rateIncrease reachSpecial data processing applicationsComputer networkClick-through rate
The invention discloses a method and a device for processing network information. The method includes enabling a content matching module to match corresponding candidate network information for a current user; enabling a network information recommending module to select recommended network information from the candidate network information; enabling a recommendation reason generating module to generate recommendation reason information of the recommended network information; enabling a display module to display the recommended network information and the recommendation reason information for the current user. The method and the device have the advantages that a network information click rate can be increased by the aid of the method and the device, and accordingly a target web page arrival rate can be increased.
Owner:SHENZHEN TENCENT COMP SYST CO LTD

Network news outline extraction method

ActiveCN106021442AReduce storage requirementsImprove storage efficiencyBiological neural network modelsNatural language data processingEngineeringWeb news
The invention provides a network news outline extraction method. The method comprises the following steps: firstly obtaining network news, extracting a keyword from characters in the network news on the basis of a Chinese vocabulary chain, and carrying out picture classification on the basis of a deep learning method; establishing a news ID and storing the news; and comparing the news. According to the network news outline extraction method, a key abstract is extracted according to Chinese information in the network news and the news pictures are classified to form the news ID, so that one piece of news corresponds to one news ID, the storage requirement of the system is greatly reduced and the storage efficiency is improved. Through the unceasing real-time updating of a mentioned news library and provided functions such as rapid query and addition, the news retrieval efficiency is improved, the workload of checking and evaluating the news by the workers is greatly reduced, and effective news screening ancillary work is provided.
Owner:JIANGSU UNIV

Industrial fault analysis expert system based on knowledge graph

InactiveCN110705710AEnhance expressive abilityProcessing speedKnowledge representationInference methodsFuzzy inferenceEngineering
The invention provides an industrial fault analysis expert system based on a Knowledge Graph. The industrial fault analysis expert system based on the Knowledge Graph comprises the following steps that expert experience knowledge is obtained and preprocessed to eliminate anomalies and complement missing values; knowledge data fuzzification is carried out, and a knowledge graph is constructed in the field of industrial fault analysis by applying a semantic net technology and a graph calculation engine according to the knowledge data fuzzification. The simplification and high efficiency of a knowledge graph structure are ensured through a graph dynamic self-optimization process, and the calculation efficiency is improved; industrial faults are diagnosed and analyzed based on a fuzzy reasoning method, and data or equipment abnormity is efficiently and accurately judged.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Real-time demand prediction method and device and electronic device

ActiveCN111612122APrediction is accurateForecastingNeural architecturesData packEngineering
The invention provides a real-time demand prediction method and device, and an electronic device. The method comprises the steps of receiving a demand prediction request of a client; wherein the demand prediction request carries a target time interval and a target position identifier, and the target position identifier comprises at least one sub-position identifier; reading target historical datacorresponding to the target time interval and the target position identifier from a preset offline database; wherein the target historical data comprises demanded quantities in different time intervals corresponding to the sub-position identifiers; inputting the target historical data into a demand quantity prediction model corresponding to the target position identifier to obtain a predicted demand quantity of each sub-position identifier in the target time interval; wherein the demand prediction model is generated by training a plurality of models including a graph convolutional neural network. According to the method, the prediction request of the user can be responded in real time, and an accurate demand prediction result is predicted through the demand prediction model trained by theplurality of models including the graph convolutional neural network.
Owner:BEIJING DIDI INFINITY TECH & DEV

Deep belief network-based airfoil profile icing ice shape prediction method and device

ActiveCN111291505AExtension of timeImprove forecast accuracyDesign optimisation/simulationNeural architecturesDeep belief networkRestricted Boltzmann machine
The invention is suitable for the technical field of ice shape prediction, and provides a deep belief network-based airfoil profile icing ice shape prediction method and device. The method comprises the following steps: constructing and training a Fourier coefficient deep belief network model and an upper and lower limit deep belief network model in advance; performing data normalization on the icing condition to be predicted to obtain a normalized icing condition; inputting the normalized icing condition into the Fourier coefficient depth confidence network model and the upper and lower limitdepth confidence network model; substituting ai, bi, xiu and xil into an ice-shaped curve Fourier series expansion formula to obtain a wing-shaped icing ice-shaped curve; the Fourier coefficient deepbelief network model and the upper and lower limit deep belief network model are composed of a plurality of restricted Boltzmann machines and a BP neural network layer. According to the method, the network training time is greatly reduced, the network prediction precision is improved, and the technical problems that gradient disappearance and local minimization are likely to happen to a pure BP neural network are solved.
Owner:LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT

Water conservancy and hydropower engineering multi-source data fusion method based on BIM+GIS

ActiveCN112765720AGuaranteed miniaturizationQuality improvementGeometric CADData processing applicationsData collectingData science
The invention discloses a water conservancy and hydropower engineering multi-source data fusion method based on BIM+GIS. The method comprises the steps of S1, exporting a fused model in a native BIM platform for lightweight processing; S2, fusing two types of multi-source model data; and S3, acquiring, processing and fusing oblique photography data in GIS software. The invention provides a technical scheme for processing, importing and keeping the model light weight, high quality and high system availability based on the native BIM platform model, and solves the problems that the BIM visualization platform model is large in volume and slow in platform loading; and the technical scheme of data acquisition, fusion and application of oblique photography data from field surveying and mapping, data processing and data fusion is verified.
Owner:YELLOW RIVER ENG CONSULTING

Network user behavior prediction system

InactiveCN106228178ASupport for Analytical MiningImprove analysis accuracyCharacter and pattern recognitionNeural architecturesData setBehavioral analytics
The invention discloses a network user behavior prediction system, and the system comprises a data collection and storage module, a data preprocessing module, a user network behavior analysis module and a data presentation module, wherein the data collection and storage module, the data preprocessing module, the user network behavior analysis module and the data presentation module are connected sequentially. The data collection and storage module is used for collecting and storing the useful mobile Internet data of a user through collection equipment. The data preprocessing module is used for carrying out the data clearing and cleaning of the useful data, filtering the data comprising noise and abnormality, forming an effective data set of user's behavior analysis, and enabling the effective data set to be transmitted to the user network behavior analysis module. The user network behavior analysis module is used for carrying out the arrangement and analysis of the effective data set, carrying out the analysis of the behaviors of the user, and outputting a user's behavior analysis result. The data presentation module is used for presenting the user's behavior analysis result to the user. The system supports the analysis and mining of a large amount of mobile Internet data of the user, and is good in prediction effect.
Owner:吴本刚

Data transfer apparatus and data transfer method

ActiveUS20120290746A1Improve data transfer efficiencyElectric digital data processingData packEngineering
A packet accompanying data valid information is transferred at high efficiency within an integrated circuit or between integrated circuits. A character indicating data enable information is provided and an identifier indicating a data enable character is assigned onto the packet. When the data enable information is valid in series, the data enable characters are eliminated from the packet to be transferred.
Owner:CANON KK

Government affair service reservation system based on big data

InactiveCN109615100AReduce waiting time in lineImprove work efficiencyReservationsResource utilizationArrival time
The invention discloses a government affair service reservation system based on big data, a big data server comprises a reservation list classification module, a data processing module and a storage module, and a business hall terminal comprises a business processing module and a window recording module. And through the operation of the big data server, a receipt with a preferred handling place and suggested arrival time can be sent to the user. The user density of each business hall can be adjusted according to the big data in the reservation stage, the queuing waiting time of the users is shortened, the working efficiency of government affair services is improved, and the resource utilization rate is increased. Business handling information is stored and analyzed through the big data server, the number of samples of data is increased, the accuracy of optimal handling places and suggested arrival time is further improved, and then the use experience of appointment is improved. A guarantee is provided for a user who has passed the number due to the reason through the number passing adjustment module, and the reservation completion rate can be improved.
Owner:HEFEI UNIV OF TECH

Big data platform-based data screening system

The invention discloses a big data platform-based data screening system, and relates to the technical field of data screening. The system comprises a data analysis screening system and a big data platform; the data analysis screening system performs information interaction with the big data platform through a data transmission and storage module; the big data platform performs information interaction with a data classification unit, a database and a terminal device through the data transmission and storage module; the data classification unit is connected with multiple data collection modules;and the data analysis screening system comprises a data extraction module, a data analysis unit, an image analysis unit, a data screening unit and an abnormal data module. Under the action of the data analysis screening system and the big data platform, the problems of long screening time, low efficiency, insufficiently simple and clear screened data information, high configuration requirements on a user terminal device and server resource waste due to multiple screening and complex processing mode are solved.
Owner:HEFEI HEJUNZHENGCE INFORMATION TECH CO LTD
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