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100 results about "Data diversity" patented technology

Data augmentation method and image classification method based on selection and generation

The invention provides a data augmentation method based on selection and generation and an image classification method, and the method comprises the following steps: carrying out the segmentation of an input image, and generating a plurality of image blocks to increase the number of training images; filtering the obtained image blocks, namely classifying the image blocks by utilizing a convolutional neural network, and selecting the image blocks related to the target object; image blocks obtained through filtering in the last step are reselected through multi-example learning, and image blockscontaining most areas of the object are selected; and finally, learning a corresponding relationship between the image and the text by utilizing the generative adversarial network, generating more new images by utilizing text description, and further expanding the diversity of the training image. According to the method, only one training sample and text description information thereof are used,and the image data diversity is amplified by segmenting, filtering, reselecting and generating the data. Image classification model training is carried out by using the amplified image data, thereby realizing image classification under a training sample condition.
Owner:PEKING UNIV

Method oriented to prediction-based optimal cache placement in content central network

The invention belongs to the technical field of networks, and particularly relates to a method oriented to prediction-based optimal cache placement in a content central network. The method can be used for data cache in the content central network. The method includes the steps that cache placement schemes are encoded into binary symbol strings, 1 stands for cached objects, 0 stands for non-cached objects, and an initial population is generated randomly; the profit value of each cache placement scheme is calculated, and the maximum profit value is found and stored in an array max; selection operation based on individual fitness division is conducted; crossover operation based on individual correlation is conducted; variation operation based on gene blocks is conducted; a new population, namely, a new cache placement scheme is generated; whether the array max tends to be stable or not is judged, and if the array max is stable, maximum profit cache placement is acquired. The method has the advantages that user access delay is effectively reduced, the content duplicate request rate and the network content redundancy are reduced, network data diversity is enhanced, the cache performance of the whole network is remarkably improved, and higher cache efficiency is achieved.
Owner:HARBIN ENG UNIV

Wireless ubiquitous network system structure

The invention relates to a wireless ubiquitous network system structure, belonging to the technical field of a wireless network. The wireless ubiquitous network system structure comprises a ubiquitous resource convergence layer, a ubiquitous network gateway middleware, a business capability convergence layer and a service convergence layer. The ubiquitous resource convergence layer is used for organizing isomeric ubiquitous resources and shielding the isomerism of ubiquitous resource supplying equipment; the ubiquitous network gateway middleware is used for converting 6LoWPAN (IPv6 over Low power Wireless Personal Area Networks) data output by the isomeric ubiquitous resources into IPv6 (Internet Protocol Version 6) data; the business capability convergence layer is used for distinguishing and managing the business capability of the ubiquitous resources and shielding the isomerism of wireless equipment; and the service convergence layer is used for comprehensively managing the ubiquitous resources and generating corresponding web services, and supplying a uniform application interface to a user. According to a wireless ubiquitous network system, the problem that the data of different IP (Internet Protocol) layers in a ubiquitous resource fusing process is various is solved; and a new way for the innovative development of an open and mixed ubiquitous network business is provided by a uniform application programming interface.
Owner:NANJING UNIV OF POSTS & TELECOMM

Data layered generation method based on fuzzy testing of industrial control protocol

The invention discloses a data layered generation method based on fuzzy testing of an industrial control protocol. The data layered generation method comprises the following steps of: (1), performing data layering according to a network protocol or a service requirement; (2), respectively loading script configuration files in various levels; (3), analyzing the script configuration files, and generating variables in different data types; (4), sequentially generating fuzzy testing data according to the increasing level sequence of the script configuration files; (5), stitching data generated in all the levels, so that a complete data packet is formed; and (6), sending the packaged data packet to tested equipment. The data layered generation method disclosed by the invention has the advantages that: a protocol is decomposed into multiple layers; the protocol data generation complexity is reduced; protocol data in each layer can correspond to multiple script configuration files; therefore, supports are provided for data diversity; the script configuration files can be freely combined; therefore, more service requirements can be satisfied; repetitive workloads are unnecessary; and accumulation of a fuzzy testing database is facilitated.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1

Real-time power load forecasting method based on integrated network of incremental transfinite vector regression machine

The present invention discloses a real-time power load forecasting method based on an integrated network of an incremental transfinite vector regression machine, comprising an online learning stage and an online load forecasting stage. The online learning stage comprises the following steps: acquiring a first batch of power load data and influence factor data in real time, and normalizing the data; initializing an II-ESVR model; and acquiring a (k+1)th (k is not less than 1) batch of power load data and influence factor data in real time, normalizing the data, and performing incremental learning and training. The online load forecasting stage comprises the following steps: acquiring data of a batch of related influence factors in real time, normalizing the data and using the data as an input of the model; and calculating forecasting results based on the II-ESVR model and parameters of the learning stage in real time. According to the present invention, the real-time power load forecasting method based on the integrated network of the incremental transfinite vector regression machine solves the problem of instability caused by the diversity of the data, has the characteristics of "fastness, stability and accuracy", and can meet the requirements of future development of power load forecasting.
Owner:JIANGNAN UNIV

GAN-based data enhancement unsupervised trademark retrieval system and method

The invention discloses a GAN-based data enhancement unsupervised trademark retrieval system. The unsupervised trademark retrieval system comprises a GAN data enhancement module, an instance distinguishing module and a trademark retrieval module. The GAN data enhancement module is used for generating a trademark data set and expanding a training set; the instance distinguishing module is used fortraining an unsupervised network and extracting trademark features; and the trademark retrieval module is used for calculating the similarity between the trademark database and the trademark featuresto be retrieved and sorting the trademark features according to sizes. First, a trademark data set is used to train an adversarial generative network. Then, the trained GAN module is used for generating an enhanced data set, and an original trademark data set is added to form a new trademark data set; and finally, applying the new trademark data set to a training instance distinguishing module. Inthe trademark retrieval module, trademark features of a trademark image to be retrieved and a new trademark data set are extracted through a trained instance distinguishing module. According to the method, the problems of difficult data labeling and insufficient data diversity in trademark retrieval are effectively solved.
Owner:GUANGDONG UNIV OF TECH

Monocular human body three-dimensional attitude estimation method based on data enhancement architecture

The invention belongs to the technical field of computer graphics, and relates to a three-dimensional human body attitude estimation method, which can accurately regress to obtain a three-dimensional posture only through a two-dimensional posture obtained by a single image, gets rid of the technical constraint that the accurate three-dimensional posture can be obtained by depending on high-cost hardware, and improves the accuracy of human body attitude estimation. According to the method, the cost of human body three-dimensional posture-dependent applications such as human-computer interaction, augmented reality and virtual reality is greatly reduced. Meanwhile, the three-dimensional posture capturing precision of unusual actions is greatly expanded, more complex actions can appear in the applications such as human-computer interaction, and the interestingness and practicability of the applications are greatly improved; the method is scientific and reliable in principle, data diversity is expanded on the basis of an existing data set, the model generalization ability is improved, vivid and natural three-dimensional human body postures are obtained by relying on image data collected by a monocular camera in a richer real scene, the precision of three-dimensional attitude estimation of unusual actions can be remarkably improved, and the method is suitable for popularization and application. The method can be applied to more diversified scenes.
Owner:青岛联合创智科技有限公司
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