612 results about "Attention model" patented technology

The invention relates to a space-time attention based video classification method, which comprises the steps of extracting frames and optical flows for training video and video to be predicted, and stacking a plurality of optical flows into a multi-channel image; building a space-time attention model, wherein the space-time attention model comprises a space-domain attention network, a time-domain attention network and a connection network; training the three components of the space-time attention model in a joint manner so as to enable the effects of the space-domain attention and the time-domain attention to be simultaneously improved and obtain a space-time attention model capable of accurately modeling the space-domain saliency and the time-domain saliency and being applicable to video classification; extracting the space-domain saliency and the time-domain saliency for the frames and optical flows of the video to be predicted by using the space-time attention model obtained by learning, performing prediction, and integrating prediction scores of the frames and the optical flows to obtain a final semantic category of the video to be predicted. According to the space-time attention based video classification method, modeling can be performing on the space-domain attention and the time-domain attention simultaneously, and the cooperative performance can be sufficiently utilized through joint training, thereby learning more accurate space-domain saliency and time-domain saliency, and thus improving the accuracy of video classification.

The invention discloses a video content description method by means of space and time attention models. The global time structure in the video is captured by means of the time attention model, the space structure on each frame of picture is captured by the space attention model, and the method aims to realize that the video description model masters the main event in the video and enhances the identification capability of the local information. The method includes preprocessing the video format; establishing the time and space attention models; and training and testing the video description model. By means of the time attention model, the main time structure in the video can be maintained, and by means of the space attention model, some key areas in each frame of picture are focused in each frame of picture, so that the generated video description can capture some key buy easy neglected detailed information while mastering the main event in the video content.

The invention discloses an image subtitle generation method and system fusing visual attention and semantic attention. The method comprises the steps of extracting an image feature from each image tobe subjected to subtitle generation through a convolutional neural network to obtain an image feature set; building an LSTM model, and transmitting a previously labeled text description correspondingto each image to be subjected to subtitle generation into the LSTM model to obtain time sequence information; in combination with the image feature set and the time sequence information, generating avisual attention model; in combination with the image feature set, the time sequence information and words of a previous time sequence, generating a semantic attention model; according to the visual attention model and the semantic attention model, generating an automatic balance policy model; according to the image feature set and a text corresponding to the image to be subjected to subtitle generation, building a gLSTM model; according to the gLSTM model and the automatic balance policy model, generating words corresponding to the image to be subjected to subtitle generation by utilizing anMLP (multilayer perceptron) model; and performing serial combination on all the obtained words to generate a subtitle.

The invention discloses a collaborative filtering recommendation method and a collaborative filtering recommendation system of a convolution neural network integrating an attention model, which relates to the technical field of data mining recommendation, improves feature extraction efficiency and scoring prediction accuracy, reduces operation and maintenance cost, simplifies cost management mode,and is convenient for joint operation and large-scale promotion and application. The invention relates to a collaborative filtering recommendation method of a convolution neural network integrating an attention model, comprising the following steps: step S1, splicing a user feature vector and an item feature vector into a new vector; S2, sending the new vector as an input vector into the multi-layer perceptron to learn and predict the score; The attention model is fused into the object potential vector to obtain the convolution neural network of the object feature vector or the hidden layer of the multi-layer perceptron.

The invention belongs to the technical field of radar remote sensing, and relates to an attention pyramid network-based SAR image multi-scale ship detection method. On the basis of an existing featurepyramid network, the invention provides a multi-scale feature extraction method with adaptive selection of significant features, namely the feature pyramid network based on a dense attention mechanism, and the method is applied to SAR image multi-scale ship target detection. Prominent features are highlighted from global and local ranges through the channel attention model and the spatial attention model respectively, and better detection performance is obtained; meanwhile, the attention mechanism is applied to the multi-scale fusion process of each layer, the characteristics can be enhancedlayer by layer, false alarm targets can be effectively eliminated, and the detection precision is improved.

Methods and systems for placing an overlay in video content are provided. A method receives video content and input indicating an overlay to be placed in the video. The method determines, based on overlay and video properties, locations where the overlay can be placed. The method presents suggested locations for the overlay and receives a selection of a suggested location. The overlay is placed in the selected location. A system includes memory with instructions for inserting an overlay into video content. The system receives an indication of an overlay to be placed in the video, performs attention modeling on the video to identify zones likely to be of interest to a viewer. The system presents locations within the identified zones where the overlay can be inserted and receives a selection of a location. The system inserts the overlay into the selected location and renders the video with the inserted overlay.

The invention relates to an event trigger word extraction method, in particular to an event trigger word extraction method based on a document level attention mechanism, comprising the following steps: (1) preprocessing training corpus; (2) performing word vector training by using PubMed database corpus; (3) constructing a distributed representation way of a sample; (4) constructing a characteristic representation way based on BiLSTM-Attention; (5) adopting CRF learning, and acquiring an optimal sequence labeling result of the current document sequence; and (6) extracting event trigger words.The method provided by the invention has the advantages that firstly a BIO tag labeling way is adopted, and recognition including multi-word trigger word recognition is realized; secondly a corresponding simple word and characteristic distributed representation way is constructed for a trigger word recognition task; and thirdly, a BiLSTM-Attention model is proposed, a distributed representation structure specific to the currently input document level information is realized by introducing an Attention mechanism, and trigger word recognition effect is improved.

The invention discloses a depth video behavior identification method and system, and the method comprises the steps: enabling the dynamic image sequence representation of a depth video to serve as theinput of CNNs, embedding a channel and space-time interest point attention model after a CNNs convolution layer, and carrying out the optimization adjustment of a convolution feature map, and finally, applying the global average pooling to the adjusted convolutional feature map of the input depth video, generating feature representation of the behavior video, inputting the feature representationinto an LSTM network, capturing time information of human body behaviors, and classifying the time information. According to the method, evaluation is carried out on three challenging public human body behavior data sets, experimental results show that the method can extract space-time information with identification ability, and the performance of video human body behavior identification is remarkably improved. Compared with other existing methods, the method has the advantage that the behavior recognition rate is effectively increased.

The invention discloses a text label marking device, which is used for marking a text label. The device comprises an input module suitable to receive text inputs and convert and output texts to a vector matrix, a convolutional neural network module connected with the input module and suitable to output local semantic features of the texts according to the vector matrix, a recurrent neural networkmodule connected with the input module and suitable to output long-distance semantic features of the texts according to the vector matrix, an attention model module connected with the convolutional neural network module and the recurrent neural network module and suitable to output weights of individual characters in the texts according to the local semantic features and the long-distance semanticfeatures, and an output module connected with the attention model module and suitable to receive the weights of the individual characters in the texts and output text labels and probabilities of thelabels. The invention furthermore discloses a training method for the text label marking device, a corresponding text label marking method and a computing device.

The invention discloses a fused attention model-based Chinese text classification method. The method comprises the following steps of: respectively segmenting a text into a corresponding word set anda corresponding character set through word segmentation preprocessing and character segmentation preprocessing, and training a word vector and a character vector corresponding to the text by adoptionof a feature embedding method according to the obtained word set and character set; respectively carrying out semantic encoding on the word vector and the character vector by taking a bidirectional gate circulation unit neural network as an encoder, and obtaining a word attention vector and a character attention vector in the text by adoption of a word vector attention mechanism and a character vector attention mechanism; obtaining a fused attention vector; and predicting a category of the text through a softmax classifier. The method is capable of solving the problem that more redundant features exist in the classification process as existing Chinese text classification methods neglects character feature information of texts, the extracted texts are single in features, all the pieces of semantic information of the texts are difficult to cover and features having obvious contribution to the classification are not focused.

The invention discloses a visual question and answer fusion enhancement method based on multi-modal fusion. The method comprises the following steps of 1, constructing a time sequence model by utilizing a GRU structure, obtaining feature representation learning of a problem, and utilizing output which is extracted from Faster R-CNN and is based on an attention model from bottom to top as the feature representation; 2, performing multi-modal reasoning based on an attention model Transformer, and introducing the attention model for performing multi-modal fusion on a picture-problem-answer tripleset, and establishing an inference relation; and 3, providing different reasoning processes and result outputs for different implicit relationships, and performing label distribution regression learning according to the result outputs to determine answers. According to the method, answers are obtained based on specific pictures and questions and directly applied to applications serving the blind,the blind or visually impaired people can be helped to better perceive the surrounding environment, the method is also applied to a picture retrieval system, and the accuracy and diversity of pictureretrieval are improved.

The invention relates to a bidirectional LSTM model emotion analysis method based on attention enhancement. According to the method, an attention mechanism and a bidirectional LSTM model are combined;text semantic information is learned by using a bidirectional LSTM model; the attention mechanism is used for enhancing attention to key words, the method comprises the steps that firstly, input sentences are expressed through pre-trained word vectors, then expression is conducted through a bidirectional LSTM model and attention model learning, the vectors expressed through the two parts are spliced, and finally text sentiment analysis work is completed through a classifier. According to the method, the semantic information of the text is learned by using bidirectional LSTM; a self-attentionmechanism established on a word vector is used for enhancing the attention degree of emotion keywords in the sentence; A word vector attention mechanism and a bidirectional LSTM are of a parallel structure, experiments show that the model provided by the invention shows superior performance, and exceeds a known best model on a plurality of indexes, so that the requirements of practical applicationcan be well met.

The invention provides an attention model-based image identification method and system. The method comprises the steps of firstly obtaining an input feature graph with an image matrix in a shape [W,H,C], wherein W is width, H is height and C is a channel number; and secondly performing space mapping on the input feature graph by using a preset space mapping weight matrix, performing activation through an activation function to obtain a space weight matrix, and multiplying the space weight matrix by the image matrix of the input feature graph by bit to obtain an output feature graph, wherein the preset space mapping weight matrix is a space attention matrix [C,1] with attention depending on image width and height, at the moment, the shape of the space weight matrix is [W,H,1], or the presetspace mapping matrix is a channel attention matrix [C,C] with attention depending on the image channel number, at the moment, the shape of the space weight matrix is [1,1,C]. The pertinence of feature extraction can be effectively improved, so that the extraction capability of image local features is enhanced.

The invention discloses an image description method and system based on a vision and semantic attention combined strategy. The steps include utilizing a convolutional neural network (CNN) to extract image features from an image whose image description is to be generated; utilizing a visual attention model of the image to process the image features, feeding the image features processed by the visual attention model to a first LSTM network to generate words, then utilizing a semantic attention model to process the generated words and predefined labels to obtain semantic information, then utilizing a second LSTM network to process semantics to obtain words generated by the semantic attention model, repeating the abovementioned steps, and finally performing series combination on all the obtained words to generate image description. The method provided by the invention not only utilizes a summary of the input image, but also enriches information in the aspects of vision and semantics, and enables a generated sentence to reflect content of the image more truly.

An embodiment of the invention provides a character identifying method and system. The method includes collecting an original image of a nature scene; performing pre-treatment on the original image; performing OCR layout analysis on the original image subjected to the pre-treatment and obtaining a plurality of pixel matrixes; performing characteristic extraction on the pixel matrixes by adopting a CNN (Convolutional Neural Network) and obtaining a plurality of characteristic patterns; performing character identification on the characteristic patterns by adopting an LSTM (Long Short Term Memory) provided with an Attention Model and obtaining a character sequence, wherein a forget gate of the LSTM provided with the Attention Model is replaced with the Attention Model. According to the invention, by utilizing the LSTM algorithm provided with the Attention Model, the characteristic sequence extracted by using the CNN algorithm is identified as the corresponding character sequence, so that required text information is obtained and operation parameters are reduced. At the same time, through control of different influence on current characters by different context content, information in long term memory can be transmitted to the current characters perfectly, so that character identification accuracy is improved.

The invention provides a speech recognition model establishing method based on bottleneck characteristics and a multi-scale and multi-headed attention mechanism, and belongs to the field of model establishing methods. A traditional attention model has the problems of poor recognition performance and simplex attention scale. According to the speech recognition model establishing method based on thebottleneck characteristics and the multi-scale and multi-headed attention mechanism, the bottleneck characteristics are extracted through a deep belief network to serve as a front end, the robustnessof a model can be improved, a multi-scale and multi-headed attention model constituted by convolution kernels of different scales is adopted as a rear end, model establishing is conducted on speech elements at the levels of phoneme, syllable, word and the like, and recurrent neural network hidden layer state sequences and output sequences are calculated one by one; and elements of the positions where the output sequences are located are calculated through decoding networks corresponding to attention networks of all heads, and finally all the output sequences are integrated into a new output sequence. The recognition effect of a speech recognition system can be improved.

The invention discloses a CNN and selective attention mechanism based SAR image target detection method. An SAR image is obtained; a training data set is expanded; a classification model composed of the CNN is constructed; the expanded training data set is used to train the classification model; significance test is carried out on a test image via a simple attention model (a spectral residual error method) of image visual significance to obtain a significant characteristic image; and morphological processing is carried out on the significant characteristic image, the processed characteristic image is marked with connected domains, target candidate areas corresponding to different mass centers are extracted by taking the mass centers of the connected domains as the centers, and the target candidate areas are translated within pixels in the surrounding to generate an target detection result. According to the invention, the CNN and the selective attention mechanism are applied to SAR image target detection in a combined way, the efficiency and accuracy of SAR image target detection are improved, the method can be applied to target classification and identification, and the problem that detection in the prior art is low in detection efficiency and accuracy is solved mainly.

The invention provides a human body behavior identification method based on a Bi-LSTM-Attention model. The method comprises the following steps: step S1, inputting an extracted video frame into an Inception V3 model, using the Inception V3 model to increase the depth of a convolutional neural network and reduce network parameters at the same time, and fully extracting depth features of the video frame to obtain related feature vectors; step S2, transmitting the feature vector obtained in the step S1 to Bi-LSTM neural network for processing, fully learning time sequence characteristics betweenthe video frames through the BI-LSTM neural network; and step S3, transmitting the time sequence feature vectors obtained in the step S2 to an attention mechanism model to adaptively perceive the network weight which has a great influence on the identification result, so that the features related to the network weight can get more attention. The recognition rate of human body behaviors can be improved.

The invention provides an image subtitle generating method based on a novel attention model. The image subtitle generating method mainly includes the steps of establishing a significance forecasting model; selecting a significant image region; forming significance and text perception attention, generating subtitles; analyzing the attention state, wherein different parts of input images are focused in the subtitle generating process through a novel subtitle structure, particularly, significant parts and parts needing to be combined with the context in the images are given through the significance forecasting model; images are extracted through a convolutional neural network, and corresponding subtitles are generated through the recurrent neural network; through attention model extension, two attention paths are created in the significance forecasting model, wherein one attention path importantly concerns the significant region, and another attention path importantly concerns the context region; the two paths jointly cooperate in the subtitle generating process, excellent subtitles are generated step by step, and a further contribution is provided for the innovative solution of image subtitle generating.

The present invention relates to a fine-grained zero-sample classification method based on multi-layer semantic supervised attention model. The local visual features of fine-grained images are extracted by a convolution neural network, and the local visual features of fine-grained images are supervised by the text description information of categories as category semantic features, and the local visual features of fine-grained images are weighted gradually. The loss function of the multi-level semantic supervised attention model is obtained by mapping the class semantic features to the hiddenspace local visual features. The global visual features of fine-grained images are combined with the local visual features weighted by the multi-layer semantic supervised attention model as the new visual features of images. The category semantic features are embedded into the new visual feature space, and the visual features and semantic features of the output of the multi-layer semantic supervised attention network are aligned, and the softmax function is used for classification. The method of the invention can input the extracted visual features and category semantic features, and output the classification result of the image.

The invention discloses a cardiovascular vulnerable plaque recognition method and system based on an attention model and a multi-task neural network. The method comprises the steps of (1) eliminatingnoise in an original polar coordinate image based on a top-down attention model, (2) classifying and segmenting a vulnerable plaque image in a preprocessed image by using a multi-task neural network,and (3) performing regional refinement on a classified and segmented vulnerable plaque image. The system includes a subsystem which eliminates the noise in the original polar coordinate image to obtain the preprocessed image based on the top-down attention model, a subsystem which classifies and segments a vulnerable plaque in the preprocessed image by using the multi-task neural network and a subsystem which carries out regional refinement on the classified and segmented vulnerable plaque image, and the subsystems are connected in order. The noise interference of a blood vessel to subsequentvulnerable plaque recognition is eliminated, and thus the positioning of the vulnerable plaque is more accurate.

A visual question and answer method based on a multi-modal decomposition model is provided. The method is characterized in that the image is trained in an ImageNet dataset and image features are extracted, the question is marked as texts into feature vectors; a collaborative attention model is introduced into the basic network architecture, image and question related features are learned, and fine-grained correlation among multi-modal features are characterized; and multi-modal features enter a multi-modal decomposition bilinear pool (MFB) or a multi-modal decomposition high order cell (MFH) module image to generate a fusion image question feature z, and the z is put into the classifier to predict the best matching answer. According to the method provided by the present invention, the collaborative attention model is used to predict the correlation between each spatial grid in the image and the question, and the best matching answer can be accurately predicted in a facilitated manner;and in combination with the image attention mechanism, the model can effectively understand which image region is important to the question, so that the performance of the model and the accuracy of the question and answer can be significantly improved.

The invention discloses a target detection method based on a time-space multiscale motion attention analysis. The method comprises a first step of creating a time-space motion blending attention model, a second step of carrying out time-space filtering on a motion vector field, wherein motion vector fields with different time scales are obtained by filtering the motion vector field on a time dimension, and an optimum time scale is obtained according to a certain principle, and a third step of carrying out multiscale motion attention blending. The target detection method based on the time-space multiscale motion attention analysis has the advantages that an appropriate time scale is selected to deal with the motion vector field to carry out attention calculation, the effects on the target measurement by the factors such as light stream estimation errors are reduced, boundedness of a traditional method is overcome, moving target zones can be effectively detected in an overall situation motion scene, and the target detection method based on the time-space multiscale motion attention analysis has good robustness compared with the same kind of methods.

The invention discloses a traffic prediction method and device based on a dynamic space-time diagram convolution attention model. Comprising the following steps: modeling a road traffic network into a graph structure; modeling a dynamic space-time diagram convolution attention model by using the diagram structure and the diagram signal; through an encoder unit of the dynamic space-time diagram convolution attention model, capturing dynamic space correlation among sensor nodes at different moments, capturing time correlation of step lengths at historical moments and time correlation among multi-step prediction, and obtaining a hidden state including each prediction step length; and enabling the decoder unit to receive the hidden state of each prediction step length, and obtaining a prediction result of recording speed values of all sensor nodes in the next one hour by adopting a scheduling sampling strategy. Experiments prove that the method of the invention can effectively obtain a traffic prediction result in the next one hour, and the model of the method of the invention exceeds SOTA.

The present disclosure relates to a text generation method, an apparatus, an electronic device and a computer readable medium. The invention relates to the field of computer information processing. The method comprises the following steps: determining a subject term set, a song title, a song rhyme foot and a paragraph structure according to the input information of a user; and generating text through the set of subject words, the song name, the song rhyme and the paragraph structure, and a depth learning model with an attention model. The present disclosure relates to a text generation method,an apparatus, an electronic device and a computer readable medium capable of generating a variety of effective poems conforming to music.