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68 results about "Madaline" patented technology

MADALINE is a three-layer, fully connected, feed-forward artificial neural network architecture for classification that uses ADALINE units in its hidden and output layers, i.e. its activation function is the sign function. The three-layer network uses memistors. Three different training algorithms for MADALINE networks, which cannot be learned using backpropagation because the sign function is not differentiable, have been suggested, called Rule I, Rule II and Rule III. The first of these dates back to 1962 and cannot adapt the weights of the hidden-output connection. The second training algorithm improved on Rule I and was described in 1988. The third "Rule" applied to a modified network with sigmoid activations instead of signum; it was later found to be equivalent to backpropagation. The Rule II training algorithm is based on a principle called "minimal disturbance". It proceeds by looping over training examples, then for each example, it: finds the hidden layer unit with the lowest confidence in its prediction, tentatively flips the sign of the unit, accepts or rejects the change based on whether the network's error is reduced,

Medical image segmentation or classification method based on small sample domain self-adaption

The invention discloses a medical image segmentation or classification method based on small sample domain self-adaption, and the method comprises the steps: downloading medical image data and clinical image data from a public data set, and taking the processed medical image data as a source domain training data set with a known label; using the processed clinical image data as a to-be-classified or segmented target domain data set, marking a very small amount of clinical image data by a doctor, constructing a small sample domain self-adaption model by a feature extractor and a classifier realized by a convolutional neural network, and training to obtain a trained small sample domain self-adaption model; and inputting a to-be-classified or segmented target domain data set into the small sample domainself-adaption model with the best classification effect to obtain a classification or segmentation result to which the focus of the target domain data set belongs. Different objective functions are adopted according to whether the data contain labels or not, cross-domain migration of the small sample domain self-adaption model is achieved, and the method is applied to classification or segmentation of image data of clinic, pathology, ultrasound and the like.
Owner:前线智能科技(南京)有限公司

Method and device for constructing MADALINE neural network based on sensitivity

The invention discloses a method and a device for constructing a MADALINE neural network based on sensitivity. The method comprises the following steps of selecting a big enough positive integer m as a hidden layer neuronal number, constructing a three-layer MADALINE neural network, and setting initial network parameters; utilizing a marked sample set to train the neural network until a certain given extremely small threshold value e is converged in a cost function to obtain a classifier through training; calculating the sensitivity of hidden layer neurons, and ranking from small to large according to the sensitivity; eliminating the hidden layer neuron with the minimum sensitivity to obtain the MADALINE neural network of a new structure; training the new MADALINE neural network on the basis of the original parameters by reusing the marked sample set; taking the network structure of the MADALINE neural network which has the minimum hidden layer neuronal number and is capable of converging as a final network structure, wherein the network of the network structure is the classifier for final output. According to the method and the device, the construction efficiency of the neural network can be effectively improved, and the performance of the MADALINE neural network is improved.
Owner:HOHAI UNIV

Self-adaptive picture classification method in semi-supervised field based on hierarchical relationship

The invention relates to a self-adaptive picture classification method in a semi-supervised field based on hierarchical relationship, belongs to the technical field of computer vision processing, and can accurately classify images in a target domain. According to the method, a hierarchical relationship between categories is introduced, and hierarchical relationship information is provided for a prototype by utilizing parent class label and child class label information of all source domains and a small amount of labeled target domain data, so that the prototype distance of the same parent class in a prototype space is relatively short, and a self-adaptive model in the semi-supervised field is helped to obtain a better classification effect. According to the method, the maximum and minimum entropy adversarial learning is carried out on the model by using the gradient inversion layer and using the unsupervised data, so that the prototype vector which has resolution for categories and is not specific to a certain field is extracted, and the classification effect of the model on target domain data is improved. According to the method, the effect on a data set with large domain offset and a large number of categories is ideal, and it is indicated that the method can solve the complex domain offset problem.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Bearing composite fault diagnosis method based on multi-label field adaptive model

The invention provides a method for diagnosing a bearing compound fault in an unknown target domain under a variable working condition. The method comprises the following steps: constructing a fault feature extractor consisting of a deep residual network based on a multi-layer domain adaptive method; inputting a preprocessed bearing vibration signal, and carrying out distribution difference matching on features, extracted through a plurality of residual blocks, of source domain data and target domain data to obtain migratable features; representing the composite fault as a combination of single faults through multi-label learning; and a binary association strategy is used to train corresponding binary classifiers for various single faults, and the features of the single faults are separated from the composite faults and are diagnosed respectively. According to the method, the problems that a traditional diagnosis scheme depends on expert knowledge and is difficult to effectively decouple and recognize the composite fault are solved, accurate diagnosis of the composite fault of the bearing under variable working conditions is achieved, meanwhile, dependence of an existing method on marked data is eliminated, and accurate diagnosis can be conducted on a related but invisible target domain.
Owner:SUZHOU UNIV

Multi-objective optimization community discovery system and method based on dynamic social network attributes

The invention discloses a multi-objective optimization community discovery system and method based on dynamic social network attributes. The system comprises a receiving unit, a data preprocessing unit, a computing unit, a display unit and a main control unit. The method comprises the following steps: abstracting a dynamic network into a dynamic network diagram formed by combining networks of T time steps, and dividing the network of the current time step t into K communities, so that a network division result is kept continuous. The invention provides a multi-objective optimization method tosolve the problem of dynamic network community division. The multi-objective optimization method comprises an initialization part and an iteration part. According to the method, a probability selection method is provided to initialize a scheme and generate an initial scheme set, a structure evolution adaptive model is further provided and comprises community structure quality and community evolution continuity, and Pt quality and evolution continuity between Pt-1 and Pt are guaranteed by using different evaluation functions. The invention provides an objective function dynamic evolution continuity measurement for evaluating community evolution continuity.
Owner:SHANGHAI UNIV

Vehicle damage feature detection method and device, computer equipment and storage medium

The invention relates to the field of artificial intelligence, and discloses a vehicle damage feature detection method and device, computer equipment and a storage medium. The vehicle damage feature detection method comprises the steps of obtaining a to-be-detected vehicle damage image and inputting the to-be-detected vehicle damage image into an unsupervised domain adaptive network model; extracting vehicle features through a migration learning model based on a pytorch, and generating a local feature map and a global feature map; outputting a migration feature vector group according to the vehicle features, obtaining a first self-adaptive feature vector group through a strong local feature self-adaptive model, and obtaining a second self-adaptive feature vector group through a weak globalfeature self-adaptive model; and performing regularization processing on the migration feature vector group, the first adaptive feature vector group and the second adaptive feature vector group to obtain an identification result. According to the vehicle damage feature detection method, the damage type and the damage area in the to-be-detected vehicle damage image can be automatically identified.The invention also relates to a blockchain technology. The unsupervised domain adaptive network model in the invention can be stored in the blockchain.
Owner:PING AN TECH (SHENZHEN) CO LTD

Anti-shielding self-adaptive target tracking method and system

The invention discloses an anti-shielding self-adaptive target tracking method and system, a scale correlation filter is trained while a position correlation filter is trained, scale self-adaptive transformation can be realized, if the transformation does not exist, the size of a target frame is not changed in the training process and is the same as the size of a rectangular frame which is determined manually at the beginning, and the target frame is not changed in the training process. However, after scale transformation, the size of the target frame can be automatically changed along with the distance of the target, the target frame becomes smaller when the target moves farther from the camera, and the target frame becomes larger when the target moves closer, so that the accuracy and robustness of the whole algorithm are improved. According to the target tracking method, an adaptive model updating strategy is adopted, and whether the target is shielded or lost or not is detected by calculating a PSR value, so that a search area is expanded, the problem that tracking cannot be continued once the target is shielded or lost due to target movement and the like in a traditional target tracking method is solved, and the target tracking efficiency is improved. And the continuity and reliability of target tracking are improved.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
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