80 results about "Learning problem" patented technology

The invention provides an intelligent learning behavior monitoring and abnormity early warning method and device, and relates to the technical field of education analysis, and the device architecture comprises a multi-modal data collection module, a behavior analysis module, a dynamic abnormity grading early warning module and a processing measure module. The multi-modal data acquisition unit integrates learning platform operation records, facial expression data and physiological data as well as environment and situation information collected by the situation awareness data acquisition unit, so that omnibearing and multi-dimensional data acquisition is realized; the long-time monitoring and personalized model construction unit uses a plurality of data mining algorithms and LSTM in deep learning to combine with an attention mechanism, accurately mines student behavior rules according to long-term data and constructs a personalized model, and can flexibly and accurately judge abnormal behaviors according to student individual conditions and learning situations. Graded early warning is provided for related personnel in time, deterioration of learning problems is effectively prevented, and timeliness and effectiveness of education intervention are improved.

The invention relates to the technical field of multi-channel audio processing, and discloses a multi-channel audio processing method and device for an ultra-low power consumption end side AI chip, and the method comprises the steps: carrying out the ADC conversion of a multi-channel analog audio signal from a microphone array, and obtaining a multi-channel digital audio data stream; performing frame segmentation and frequency domain transformation processing on the multi-channel digital audio data stream to obtain a multi-channel frequency domain feature matrix; executing variational Bayesian inference to obtain an enhanced voice signal matrix; implementing two-stage cascade processing to obtain a voice event processing result; and executing an adaptive federated learning algorithm among the distributed devices to obtain globally optimized model parameters, and deploying the globally optimized model parameters to an ultra-low power consumption end side AI chip to execute multi-channel audio processing. And a complex audio processing algorithm can be efficiently operated on an end-side AI chip with limited computing resources.

The invention discloses an artificial intelligence self-adaptive education system based on big data, and relates to the field of intelligent education, the artificial intelligence self-adaptive education system comprises an education resource management module, a student data management module, a self-adaptive learning recommendation module, an auxiliary teaching decision module and a security reinforcement module, and a cloud data management library is used for classifying and integrating education resources. The method comprises the steps of establishing a knowledge graph, performing knowledge point classification on resources by constructing the knowledge graph, performing accurate matching on personal portraits of students and the knowledge graph through an incremental self-adaptive matching model, dynamically adjusting recommended learning resources in real time, analyzing collective learning problems through a big data intelligent analysis model, and generating collective teaching suggestions. A three-layer security firewall is adopted to ensure the security of the system; the problem that an existing self-adaptive education system neglects the learning progress and weak links of classes or groups is solved, and intelligent management, personalized learning recommendation and collective problem analysis of education resources can be achieved.

The invention relates to the technical field of e-commerce, in particular to an e-commerce scene cold start recommendation method combining meta-learning and causal inference, and the method comprises the steps: obtaining user and commodity feature data, and carrying out the vectorization representation; analyzing an interactive causal relationship between user features and commodity features, constructing a causal graph, and quantifying causal influence factors of user behaviors on commodity recommendation; constructing a cold start recommendation model based on a meta-learning framework, and converting a cold start problem into a cross-task transfer learning problem; training a meta-model, and learning a general mode between different tasks; using influence factors obtained by causal inference as constraint conditions, and optimizing a target function of the meta-learning recommendation model; and designing a personalized recommendation strategy, and generating a personalized cold start recommendation result in combination with causal inference constraints. According to the method, meta-learning and causal inference are comprehensively utilized, the cold start problem in an e-commerce scene is effectively solved, and recommendation individuation and interpretation are improved.

The invention relates to the technical field of intelligent education, in particular to a learning path management system and method based on a cognitive intelligent large model and a learning machine, and the system comprises a data collection module which is used for collecting multi-dimensional learning data of students; the data analysis module is used for analyzing the learning data through a data analysis algorithm to generate a student learning portrait; the learning plan generation module is used for enabling the cognitive intelligent large model to match corresponding learning plans for the students in the knowledge graph according to the learning portraits of the students; the parent interface adjustment module is used for feeding back the learning plan adjustment information to the learning plan generation module; the learning process tracking management module is used for receiving learning data of students in real time. Through multi-dimensional data acquisition and deep analysis, in combination with a knowledge graph of a cognitive intelligent large model, a personalized learning plan is customized for students, it is ensured that a learning path highly conforms to individual demands of the students, and a window is provided for parents to know learning problems of children.

The invention belongs to the technical field of intelligent education, and discloses a multi-modal artificial intelligence learning assistant based on an embedded platform, and the method comprises the steps: a data collection and processing module receives learning problems and student learning data, and carries out the standardization processing, and obtains a problem standardized data set; the cognitive model construction module constructs a learner cognitive model based on the problem standardized data set and student learning data, and marks knowledge gap nodes; the teaching scheme generation module determines a self-adaptive teaching scheme including knowledge depth parameters, a learning material combination strategy and an explanation expression strategy according to the structural features of the cognitive model; the learning sequence construction module constructs a customized learning sequence according to the knowledge gap nodes and the knowledge depth parameters; and the learning content generation module generates personalized learning content according to the learning sequence and the teaching scheme. Through the self-adaptive processing flow driven by the cognitive model, personalized teaching for different students is realized, and the learning efficiency and the learning effect are remarkably improved.

The invention discloses a large-model sensitive large-content filtering method in a learning scene, and the method comprises the steps: extracting an image-side visual coding feature and a text-side semantic coding feature of a learning problem from the learning problem inputted by a user through employing a neural network model based on deep learning; and multi-modal feature fusion is further carried out on the characters and the pictures to form more comprehensive and accurate question joint representation, and the joint representation can fully mine the deep relation between the characters and the pictures, so that sensitive or improper contents in complex input are effectively identified, and automatic and intelligent filtering of the compound learning questions is realized. The problems that a traditional single-mode filtering scheme is narrow in coverage, low in detection accuracy, low in manual auditing efficiency and the like are solved, the recognition capacity of a platform for sensitive content is improved, and then a firm and reliable safety guarantee is provided for an intelligent education platform.

The invention belongs to an image classification method, and particularly discloses a long-tail learning image classification method with in-distribution and out-distribution noise labels. According to the method, a long-tail learning framework with in-distribution and out-of-distribution noise tags in an open world is adopted to build a deep learning model, and the deep learning model is used for solving the challenging learning problem of simultaneously processing ID and OOD noise samples on long-tail data. Specifically, according to the method, firstly, OOD noise samples are filtered and uniform labels are distributed by utilizing model consistency prediction, so that the detection capability of the model on the OOD noise samples is enhanced; meanwhile, ID noise samples are separated by using JS divergence, and misclassification of clean samples in distribution is reduced, especially in a tail category; in addition, an additional semantic classifier is introduced to reduce the bias of the pseudo labels to majority categories; and finally, strong enhanced consistency regularization is introduced, so that the generalization performance and robustness of the model are further improved, and the classification performance of the model on a multi-bias data set is enhanced.

The invention relates to the technical field of big data, in particular to an intelligent teaching evaluation method, system and device based on data analysis and a medium. According to the method, the initial evaluation index is obtained by responding to the evaluation trigger instruction, and the standardization of the evaluation process is ensured; secondly, historical learning data of students are collected, knowledge point mastering coefficients are calculated, and quantitative analysis of individual learning conditions is achieved; calculating the overall grasp degree of the class, setting an early warning threshold value, and timely discovering a universal problem in learning; further identifying weak knowledge points and analyzing pre-association and subsequent influence of the weak knowledge points, and deeply understanding the root of learning disorder and possibly caused chain reaction; and finally, dynamically updating an evaluation index according to an analysis result, generating a teaching suggestion report, and providing a targeted teaching optimization scheme for teachers. The learning problem can be found and intervened as soon as possible, more effective teaching suggestions can be provided according to the relevance between the knowledge points, and the scientificity and practicability of teaching evaluation are remarkably improved.

The invention discloses an engineering vehicle driver behavior analysis system based on federal learning. The system comprises a multi-source sensing layer which forms vehicle-road-person collaborative all-weather scenarized data input; the edge calculation layer is used for capturing a complex space relationship of a driving scene, embedding a lightweight cross-modal attention module, calculating an attention weight, and processing long-sequence driving operation data by adopting a Mamba state space model to capture a long-term dependency relationship of a driver state; the federated learning layer adopts a pFedMe algorithm to realize a driver customized model, during local training, the model learns local data distribution characteristics through a Moreau Envelopes regularization item, the cloud aggregates distribution of adaptive local data of each driver, models a federated learning process as a meta-learning problem, and performs training updating; a privacy and security layer; and differential privacy dynamic adjustment, Paillier improved homomorphic encryption and a Hyperledger Fabric block chain are adopted to prevent a log from being tampered.

The invention discloses a content optimization system based on adaptive wisdom English teaching, and particularly relates to the technical field of artificial intelligence, which comprises a learning data acquisition module, a content intelligent recommendation module, a teaching strategy adjustment module and a content optimization and generation module, the learning data acquisition module is used for acquiring learning data of students from learning behaviors of the students and processing and analyzing the acquired learning data so as to evaluate the English levels of the students, and the content intelligent recommendation module is used for constructing student portraits based on the English level evaluation results of the students and analyzing the learning contents so as to recommend the students. The learning recommendation module is used for providing personalized optimal learning recommendation for students, the teaching strategy adjustment module is used for analyzing learning data of the students, diagnosing learning problems and formulating corresponding adjustment strategies so as to improve the learning effect and mastering conditions of the students, and the content optimization and generation module is used for optimizing and generating content according to feedback of the students and performance of the students. The existing teaching content is optimized, and new content is generated.

The invention discloses a data stream processing method and system based on deep reinforcement learning, and relates to the technical field of industrial Internet of Things. Comprising the following steps: S1, constructing a topological graph neural network, determining a feature similarity weight of equipment topological features through a multi-head graph attention mechanism, and dynamically aligning the equipment topological features of a source domain and a target domain; s2, setting a main channel through a deep reinforcement learning model, setting an auxiliary channel through a time sequence contrast element learning model, and obtaining health degree evaluation and fault mode characteristics of the equipment; and S3, monitoring a data flow according to the health degree evaluation and the fault mode characteristics, and recombining a network structure through a neural architecture search model. According to the method, the transfer learning problem caused by equipment isomerism in the industrial Internet of Things is solved, the physical distance, the process coupling and the feature similarity can be dynamically balanced, the initial accuracy of the source domain model in the target domain is improved, and the annotation data volume required by the target domain is reduced.

The invention provides a differential game method for solving the man-machine sharing control problem of an automatic driving vehicle, and the method comprises the steps: building a man-machine non-cooperative differential game model based on a driver target trajectory and a trajectory planned by an automatic driving system and considering the control constraint of a matrix inequality form, the non-cooperative differential game model adopts Nash equilibrium to represent a man-machine game problem; a neural network and other function approximation methods are introduced based on the non-cooperative differential game model, and a differential game system of unknown parameters is established; an integral parallel learning method is adopted, and track data is used as unknown parameters in a numerical integral identification system; and based on the identified differential game system, learning a Nash equilibrium solution in a man-machine game problem through an adaptive iterative learning algorithm. According to the scheme, on the premise of not depending on accurate parameters of a system model, the situation that control is restrained is considered, and the control strategy of the driving system is improved by solving the man-machine non-cooperative Nash equilibrium solution.

An analogy of Post-Selections is: “Somebody claims that his scheme provided a lottery ticket number that has won $1M, but he conceals that the scheme has spent 2 millions of lottery tickets of $1 each. The reported ticket is only the luckiest. The luckiest ticket was Post-Selected after the actual lottery test. The luckiest lottery ticket will not have the same luck next time.” Many machine learning methods suffer from Post-Selections, from neural networks, to reservoir computation, to swam intelligence to evolutionary computation. The numbers $1M, 2M and $1 and the chance to win in the analogy differ across different machine learning problems, but the nature of the flaw in the reports is basically the same. This invention presents a method that does not need any Post-Selections since it trains only one network that is computed in a closed form that corresponds to the most-probable network from training experience.

The invention discloses a multi-agent cooperative complementary attention information processing and reward guiding method, and relates to the technical field of multi-agent reinforcement learning, and the method comprises the following steps: carrying out the reclassification of the observation information of an agent, and dividing the observation information into environment information, internal state information and external state information; according to the invention, in the information processing and decision-making capability, the intelligent agent observation information is re-classified, and an attention complementation mechanism is adopted, so that the information processing efficiency and the strategy network decision-making performance are improved; in the aspect of training effect, the target network is integrated with an excitement reward mechanism, so that the problem of low-efficiency learning of training the attention network in the initial stage is solved, and the collaboration intention of the intelligent agent is improved; compared with the QM IX algorithm, the COMA algorithm and the QPLEX algorithm, the method has the advantages that the strategy convergence efficiency is better in the isomorphic scene in the interstellar bumbert multi-agent challenge scene, the ablation experiment proves the necessity of combining the complementary attention network and the excitement reward mechanism, and the training stability and the final performance of the attention network are improved through cooperation of the complementary attention network and the excitement reward mechanism.

The invention discloses an emergency protection place multi-target site selection optimization method based on integrated reinforcement learning, and belongs to the field of place site selection optimization, and the method comprises the steps: S1, obtaining candidate point and demand point data in a region, and constructing a multi-target reinforcement learning problem; s2, Markov modeling is carried out, and a deep reinforcement learning problem is decided based on a single agent; s3, constructing an integrated reinforcement learning framework; s4, training the constructed integrated reinforcement learning network; s5, obtaining a site selection result by using an integrated reinforcement learning framework, and performing visual presentation; according to the method, an integrated learning strategy and a self-adaptive optimization technology are introduced, and a spatial information technology with remote sensing and geographic information system cores is combined, so that multi-target site selection optimization of the urban emergency protection site is realized, and the robustness and practicability of the model are enhanced through aggregation of the Actor-Critic network.

The present invention relates to the technical field of e-commerce, specifically to a cold start recommendation method for e-commerce scenarios that combines meta-learning and causal inference. The method includes: obtaining user and product feature data and performing vectorized representation; analyzing the interactive causal relationship between user features and product features, constructing a causal graph, and quantifying the causal influence factor of user behavior on product recommendation; constructing a cold start recommendation model based on the meta-learning framework, and transforming the cold start problem into a cross-task transfer learning problem; training the meta-model to learn the general patterns between different tasks; using the influence factor obtained by causal inference as a constraint condition to optimize the objective function of the meta-learning recommendation model; designing a personalized recommendation strategy, and generating personalized cold start recommendation results by combining causal inference constraints. The method of the present invention comprehensively utilizes meta-learning and causal inference, effectively solves the cold start problem in e-commerce scenarios, and improves the personalization and interpretability of recommendations.

The invention relates to a method for homomorphic determination of a positive or negative character of a corresponding message [mu] from an encrypted message c encrypted by means of a fault-tolerant learning problem-type method, the message [mu] belonging to a discrete toroidal surface Tp or belonging to a space bijection to Tp, having formula (p), each integer pi being co-prime, the encrypted message c consisting of q components Ci, with formula (c), vi is a Bezout coefficient associated with an integer pi. The method comprises expanding the encrypted message c at least once according to formula (c [1]), wherein p is an odd number greater than or equal to 3. The method further comprises merging the parameters representing the symbols of c and the symbols of c [1].

The invention relates to an intelligent education projector system based on an AI large model and an interaction method. The intelligent education projector system comprises a projector body, a data acquisition unit, a core processor, a projection processing module and a voice playing module. According to the invention, the projector is integrated with AI education, so that the projector has an education function, and the teaching experience of a user is improved. According to the method, active input data such as audios, texts and pictures of a user can be collected, and the multi-modal data are coded to generate corresponding feature vectors. The vectors are input into a multi-mode large model which is trained in advance and subjected to education field data fine adjustment, so that an execution strategy aiming at the current problem is obtained. And finally, targeted teaching reply content is generated based on the strategy. According to the design, multi-modal information is fully utilized, students can be guided to solve learning problems, and the students are helped to consolidate and summarize learning contents in a targeted manner.

The invention provides a data analysis method for personalized diagnosis and intervention of student learning questions, and the method comprises the following steps: S1, collecting an answer event sequence of a target student in a target question, the answer event sequence comprising an operation type and a corresponding timestamp; and S2, performing process segmentation on the answer event sequence based on a time interval of adjacent answer events, a submission event, a jump event and a rollback event. According to the method, process segmentation, step alignment and abnormal evidence extraction are carried out on the answering event sequence in the answering process of the student, and the learning abnormity of the student is specifically positioned to the corresponding standard question solving step and the trigger evidence thereof, so that a structured learning question positioning result is formed; therefore, a learning analysis result is converted from a single result index into traceable and explainable process diagnosis information, coarse-grained judgment only depending on an answer result or an abnormal score is avoided, and usability and pertinence of learning problem analysis are improved.

The invention discloses a continuous learning algorithm based on multi-task learning, which is used for solving the problems of real-time target detection and continuous learning of an unmanned system in a complex dynamic environment. The method comprises the steps that S1, an intelligent unmanned vehicle carries a high-precision sensor to collect multi-dimensional environment data, and importance samples are screened through a maximum gradient retrieval algorithm; s2, performing preliminary training on the pre-training model by using the screening data to enable the pre-training model to have basic target detection and recognition capability; s3, building a sea area image data enhancement continuous learning framework, and enhancing the image feature learning ability of the model under different weather conditions through an image compression reconstruction model, a cross attention module and an alternate training mode; s4, developing a stability and plasticity balancing strategy based on multi-task learning, relieving disastrous forgetting by solving a dual-objective optimization problem, and introducing a novel objective selection strategy to enhance the core set selection efficiency; s5, adding a regularization technology based on an influence function, and optimizing the performance of the model in the current environment; s6, in combination with a fine tuning technology, a general data pre-training model is firstly used, then the model is fine-tuned by using environment specific data, and the detection precision in a specific environment is improved; and S7, carrying out online learning and model evaluation optimization, continuously collecting new data to update the model, establishing a real-time evaluation and feedback mechanism, and continuously optimizing a target detection algorithm. According to the invention, powerful real-time target detection and continuous learning capabilities are provided for the unmanned system in a complex and changeable actual scene.

Systems and methods, for selecting a neural network for a machine learning (ML) problem, are disclosed. A method includes accessing an input matrix, and accessing an ML problem space associated with an ML problem and multiple untrained candidate neural networks for solving the ML problem. The method includes computing, for each untrained candidate neural network, at least one expressivity measure capturing an expressivity of the candidate neural network with respect to the ML problem. The method includes computing, for each untrained candidate neural network, at least one trainability measure capturing a trainability of the candidate neural network with respect to the ML problem. The method includes selecting, based on the at least one expressivity measure and the at least one trainability measure, at least one candidate neural network for solving the ML problem. The method includes providing an output representing the selected at least one candidate neural network.

This invention discloses a face recognition method based on semi-supervised dual-source face feature fusion, addressing the semi-supervised, multi-view, and cost-sensitive learning problems existing in real-world face recognition applications. The method includes: acquiring multiple face image data under preset dual views; inputting the face image data into a trained semi-supervised cost-sensitive canonical correlation analysis model; performing dual-source feature fusion using the cost-sensitive feature extraction matrix in the semi-supervised cost-sensitive canonical correlation analysis model to obtain the feature representation of the face image data; and classifying the face image data using a classification model based on the feature representation to obtain the face recognition result. This invention can obtain accurate and reliable face recognition results using only a small number of supervised dual-source face images, effectively improving the classification performance of the face recognition model.

The invention discloses a cementing material production energy consumption evaluation method based on Internet of Things acquisition, and the method comprises a meta learning and transfer learning fusion framework. The method further comprises the following steps: S1, the meta learning and transfer learning fusion framework firstly divides source domain cementing material production data by taking batches and classification tasks as basic units for training the cementing material production data, and divides the source domain cementing material production data into source domain cementing material production data by taking the tasks as units; and the divided cementing material production data is used as a basic input unit of meta learning. Through a multi-task learning normal form of meta learning, by utilizing division of a support set and a query set, under the condition of a small number of cementing material production data samples, rapid adaptive learning of the model is realized, the problem of small sample learning is solved, in addition, through knowledge migration from source domain cementing material production data to target domain data by transfer learning, the learning efficiency is improved. And the cross-domain learning problem is processed, and the adaptability of the model to different production environments is enhanced.

The application provides a password-based authentication key agreement method based on a lattice, which allows a user to use a password to agree with a server on a session key and authenticate the user identity. The method is constructed based on an ideal lattice, and its security is established on a ring-based learning problem with errors, so that the method can effectively resist quantum attacks. The user's credentials are saved in the form of password-encrypted in the server end, and only the user with the correct password can decrypt the legal credentials and establish the subsequent session key. When the session key is established, the user and the server perform an authenticated key exchange with a key hiding attribute to prevent the user's credential information from being leaked. Even if an enemy obtains the user's password-encrypted credential ciphertext and exhaustively searches the password space to decrypt the ciphertext to obtain a possible user credential set, the correct password corresponding to the credential cannot be identified from the set, so the application can resist offline dictionary attacks. In addition, two-way key confirmation can ensure the consistency of the session key and verify the user identity.

The present invention provides a method and system for maximizing the influence of a dynamic network structure based on a learning automaton, comprising: 0 ,G 1 ,…} is mapped into a short-term stable non-stationary environment consisting of a set of stable environments {E 0 ,E 1 ,…}, initialize the seed node set and current influence; based on the learning automaton LA algorithm, in the environment E 0 Explore and get the initial network G 0 Based on the adaptive sliding window algorithm, two consecutive network topology structures G 0 →G 1 Perform change detection; between the old and new network G 0 →G 1 The historical information of the interaction between the learning automaton and the environment is transferred to obtain the seed node set S in the new network * The present invention transforms the influence maximization problem into an optimization learning problem by learning an automaton algorithm without using network structure information and without limiting a specific propagation model, thereby achieving rapid selection of an influential seed node set.

This invention discloses a data stream processing method and system based on deep reinforcement learning, relating to the field of industrial Internet of Things (IIoT) technology. It includes: S1: Constructing a topological graph neural network and determining the feature similarity weights of device topological features through a multi-head graph attention mechanism, dynamically aligning the device topological features of the source and target domains; S2: Setting up a main channel through a deep reinforcement learning model and an auxiliary channel through a temporal contrastive meta-learning model to obtain device health assessment and fault mode features; S3: Monitoring the data stream based on the health assessment and fault mode features, and reorganizing the network structure through a neural architecture search model. This invention solves the transfer learning problem caused by device heterogeneity in the IIoT, dynamically balancing physical distance, process coupling, and feature similarity, improving the initial accuracy of the source domain model in the target domain, and reducing the amount of labeled data required in the target domain.

The invention discloses a distributed machine learning method and device based on fault-tolerant learning, equipment and a medium, and relates to the technical field of machine learning, and the method comprises the steps: obtaining data used for training a machine learning model as original data; encrypting the original data based on the fault-tolerant learning problem to obtain encrypted data; transmitting the encrypted data to a plurality of computing nodes, so that each computing node respectively trains a machine learning model by using the encrypted data; acquiring an encryption result transmitted by each computing node; the encryption result is obtained by encrypting model parameters of the trained machine learning model based on a fault-tolerant learning problem; and determining a trained machine learning model according to an encryption result. Original data is encrypted through a fault-tolerant learning problem to obtain encrypted data, and each computing node uses the encrypted data to train a machine learning model instead of plaintext original data, so that the data security is improved; and the central node decrypts the encryption result transmitted by the computing node to obtain model parameters, so that efficient distributed machine learning is realized.

The invention discloses an open intelligent algorithm adaptive combination method and system based on meta learning and a dynamic pipeline. According to the method, by introducing an algorithm directed acyclic graph construction mechanism of a type system and an adapter, dynamic integration of heterogeneous components in an open algorithm library is realized, and the limitation that a traditional AutoML system algorithm combination space is closed and depends on a preset process is overcome. Environment perception and a performance monitoring closed loop during operation are integrated into a decision process, and a dynamic adjustment mechanism based on deviation triggering is designed, so that the system has the capability of coping with concept drift and resource fluctuation after deployment. By constructing and continuously updating the knowledge base recording the task-environment-performance mapping relation, the system has the ability of making decisions based on historical experience. According to the meta-learning mechanism, when the system processes similar tasks, repeated search overhead can be reduced, continuous evolution of performance is achieved, and a feasible technical path is provided for solving the continuous learning problem of a universal intelligent system.

We provide the system. [Solution] A means for acquiring the user's learning history information and selecting learning problems optimized for the user, A means for dynamically generating dialogue content based on the selected learning questions, A means for receiving user voice input, converting it into text data, and analyzing the text data, A means of providing feedback to users based on the analysis results, A means for detecting a user's mental stress and providing dialogue content for mental care as needed, A means of recording the user's learning results and updating the learning profile for the next session, A system that includes this.