78 results about "Active learning (machine learning)" patented technology

The invention belongs to the field of natural language processing, and provides a pre-training large model physical examination text labeling method and system based on active learning. The method is realized through the following process: collecting and sorting structured and unstructured physical examination data, manually pre-labeling a small number of samples by an expert and standardizing a format; selecting a pre-training large model adaptive to the medical field task; designing a domain-specific cue word template to strengthen semantic understanding of the model; performing parameter optimization by adopting supervised fine tuning and low-rank adaptation technologies; an active learning closed loop is constructed, uncertain samples are selected through multiple rounds of iterative training to supplement labels, and the model is dynamically optimized by using a verification set; and the optimized model is applied to intelligently label the remaining data. According to the scheme, the key problems of low efficiency, poor rule method generalization ability, high machine learning model computing power demand and insufficient large model field adaptation of traditional manual labeling are solved, and the automatic extraction precision of medical entities such as pathological features and clinical indexes in the physical examination report can be effectively improved.

The invention relates to the technical field of abnormal domain name detection, in particular to an abnormal domain name detection system based on machine learning, which comprises a data processing and feature extraction module, a model training and updating module, a real-time detection and classification module, a family clustering and analysis module and an active defense and response module. Compared with a traditional abnormal domain name detection system which usually depends on a small number of characteristics such as character frequency and domain name length for detection and is difficult to comprehensively capture abnormal characteristics of domain names, the abnormal domain name detection system has the advantages that multi-modal characteristics such as character statistics, semantic characteristics and context behavior characteristics are extracted; in addition, the weight of each feature is dynamically adjusted through an attention mechanism, the problem that a single feature is easy to avoid is solved, high-uncertainty samples are screened through an active learning selector to update a training set, the problem of sample imbalance is solved, and the generalization ability of the model is improved.

Embodiments relate to system and methods involving use of a technique for managing a database for producing a material composition having a thermodynamic phase. The technique can include: receiving a binary phase diagram for each material to be used as a component of a high-entropy alloy (HEA); using one or more active learning machine learning techniques for generating a feature, the feature including: a primary feature that is representative of a probability that an HEA will exhibit a solid solution phase and / or an intermetallic phase, and a physics-based feature that is representative of a factor related to formation of a desired intermetallic HEA phase; encoding the primary feature and the physics-based feature; generating an output representation of a HEA alloy composition and phase of a predicted materials composition; and selecting a HEA composition and phase that will meet a material design criterion.

Systems and methods for training a machine learning model to classify defects with utility-function-based active learning are described. In one embodiment, one or more non-transitory, machine-readable mediums are configured to cause a processor to at least determine a utility function value for unclassified measurement images, based on a machine learning model, wherein the machine learning model is trained using a pool of labeled measurement images. Based on a determination that the utility function value for a given unclassified measurement image is less than a threshold value, the unclassified measurement image is output for classification without the use of the machine learning model. The unclassified measurement images classified via the classification without the use of the machine learning model are added to the pool of labeled measurement images. The machine learning model is trained based on the measurement images classified via the classification without the use of the machine learning model.

The invention discloses a multi-component catalyst active site prediction system and method fused with quantum embedding, and relates to the technical field of catalysis and material informatics, and the system comprises a structure and site enumeration module which generates candidate sites; the adaptive quantum embedding calculation module obtains key reaction microcosmic parameters; the unified site fingerprint and feature engineering module constructs and fuses standard site fingerprints; the physical consistency machine learning module predicts adsorption energy and other parameters and uncertainty thereof; the active learning and sample selection module selects a high-value sample optimization model; the microdynamics evaluation module calculates index values such as activity; and the multi-objective optimization and sorting module generates an optimization sorting list. According to the method, the unification of calculation precision and efficiency is realized, the problem of non-unification of locus characterization is solved, the model interpretability and extrapolation reliability are improved, and the comprehensive evaluation and optimization sorting of multi-target performance are completed.

The invention discloses a microemulsion interfacial tension efficient prediction method and system based on active learning and molecular dynamics. According to the method, 217 molecular descriptors corresponding to each molecular structure are calculated by adopting an RDKit software package, and the descriptors are used for representing molecular structure characteristics and serve as input variables of a machine learning model, so that key structure information including molecular branching degree, polarity and the like is transmitted. For an oil-water-surfactant ternary interface system, the oil-water interfacial tension in the presence of a surfactant is simulated and calculated through molecular dynamics, and an IFT value is set as a model prediction target. An active learning mechanism is introduced, and iterative sample labeling in the molecular dynamics simulation process is guided; and integrating the obtained IFT data with the molecular descriptor features, constructing a machine learning data set, and training a random forest model. According to the method, the problem of screening a high-performance surfactant layer by a middle-phase microemulsion system can be solved, and the ultra-low oil-water interfacial tension can be rapidly and efficiently screened.

Various embodiments of the present disclosure provide methods, apparatus, systems, computing devices, computing entities, and / or the like for labeling data by (i) generating, using a natural language machine learning model, a labeled dataset from unlabeled data, (ii) training one or more instances of a classification machine learning model based on the labeled dataset, (iii) generating, using the one or more instances of the classification machine learning model, a plurality of validation classifications, and (iv) generating a refined labeled dataset that is based on the labeled dataset and a plurality of uncertainty scores associated with the plurality of validation classifications.

The invention relates to the technical field of machine learning potential molecular simulation, and provides a montmorillonite thermal conductivity prediction method based on NEP machine learning potential, and the method comprises the following steps: constructing a montmorillonite crystal structure model, carrying out first principle molecular dynamics calculation on the montmorillonite crystal structure model, introducing lattice distortion and atomic disturbance, and generating an initial structure set; performing static single-point DFT calculation on the initial structure set, and constructing a training data set; based on an NEP machine learning framework, utilizing the training data set to train and generate a potential function; optimizing the generation process of the potential function by adopting an active learning strategy; and performing thermal conductivity prediction verification on the potential function, and obtaining a thermal conductivity prediction result of the montmorillonite based on the potential function passing the verification. The defect that a traditional classical potential function depends on an empirical or semi-empirical model and is limited in precision and applicability is overcome, the problem that the dynamic behavior and the heat conduction mechanism of a complex material are difficult to accurately capture is solved, the calculation cost is reduced, and meanwhile the precision is kept.

The invention provides a water quality detection method based on combination of machine learning and spectrophotometry, and the method comprises the steps: measuring the absorbance of a water sample under a plurality of preset wavelengths through a spectrophotometer to form a multi-dimensional absorbance data set, mapping the multi-dimensional absorbance data set to a high-dimensional space through a kernel function technology to obtain a data set with enhanced non-linear features, and carrying out the detection of the non-linear features of the multi-dimensional absorbance data set. Extracting a known water sample and the pollutant concentration corresponding to the known water sample from historical water quality data, generating a training sample set, performing pollutant concentration prediction on the data set with the enhanced nonlinear characteristics by applying a machine learning model, and dynamically adjusting the training sample set by adopting an active learning strategy to obtain a pollutant concentration prediction value, and performing safety grade evaluation on the water sample and outputting a water quality report by using the predicted value of the pollutant concentration in combination with a water quality safety standard, the technical scheme provided by the invention improves the efficiency and accuracy of water quality detection, provides powerful technical support for environmental protection and public health guarantee, and has a wide application prospect. The whole process realizes integrated operation from data acquisition to result interpretation, and ensures scientificity and reliability of water quality management decision.

A computer implemented method of managing a first model that was trained using a first machine learning process and is deployed and used to label medical data. The method comprises determining (202) a performance measure for the first model, and if the performance measure is below a threshold performance level, triggering (204) an upgrade process wherein the upgrade process comprises performing further training on the first model to produce an updated first model, wherein the further training is performed using an active learning process wherein training data for the further training is selected from a pool of unlabeled data samples, according to the active learning process, and sent to a labeler to obtain ground truth labels for use in the further training.

The present invention relates to an AI-based system and method for generating enhanced radiology reports. The system comprises a database for storing multimodal patient data, a natural language processing (NLP) module for extracting clinical information, and a machine learning module for correlating the clinical information with radiology images to identify diagnostic insights. An AI-based report generation module analyzes the images and clinical information to generate a preliminary report, which is refined based on radiologist input. The generated report is then integrated into the patient's electronic health record. The system employs techniques such as multimodal deep learning, active learning, explainable AI, and federated learning to enhance diagnostic accuracy, capture expert feedback, provide transparency, and enable multi-institutional collaboration. The invention aims to improve the accuracy, efficiency, and value of radiology reporting in patient care.

Various embodiments of the present disclosure provide methods, apparatus, systems, computing devices, computing entities, and / or the like for labeling data by (i) generating, using a natural language machine learning model, a labeled dataset from unlabeled data, (ii) training one or more instances of a classification machine learning model based on the labeled dataset, (iii) generating, using the one or more instances of the classification machine learning model, a plurality of validation classifications, and (iv) generating a refined labeled dataset that is based on the labeled dataset and a plurality of uncertainty scores associated with the plurality of validation classifications.

Methods, apparatus, and computer-implemented methods are provided for training machine learning (ML) techniques to generate a property model for predicting whether a compound has a particular property. An iterative process / feedback loop can be performed to generate a property model, the process including generating, based on the property model, a list of prediction results for a plurality of compounds and their association with the particular property, validating the property model based on compounds from the list of prediction results having an association with the particular property, and updating the property model based on the property model validation. The process / loop can be repeated using the updated property model until it is determined that the property model has been effectively trained. The property model validation can include selecting a list of compound candidates, performing simulation analysis and / or laboratory analysis on the list of compound candidates for association with the particular property, and updating the property model using the simulation and / or laboratory results.

The application provides an alloy LIBS quantitative analysis method based on a Bayesian convolutional neural network and active learning. The method comprises the following steps: S1, spectrum data acquisition and preprocessing; S2, model construction and training; S3, active learning iteration optimization. Compared with a traditional machine learning model, the alloy LIBS quantitative analysis method provided by the application has high accuracy and good interpretability. Under the same number of labeled samples, the application shows better regression performance compared with a random sampling and a representative sampling strategy. Even if the number of labeled samples is reduced to 65% of the data set, the prediction performance of most components can reach 90% of full supervised learning, high accuracy is maintained, and good engineering application prospects are achieved.

This invention relates to a method for constructing a machine learning potential energy model based on hierarchical active learning, comprising the following steps: constructing a database of background solvent molecules and lithium salt molecules; initializing a machine learning potential energy model committee; outer active learning automatically exploring the chemical species composition space of the electrolyte, generating electrolyte formulations and initial structures; determining whether a structure needs to be included in the labeling range based on uncertainty calculations; automatically constructing a liquid phase environment based on classical force field simulation methods; performing high-precision simulations based on first-principles calculations and labeling the energy and force values ​​of the structures; inner active learning driving the machine learning potential energy model to explore the configuration space and label the energy and force values ​​of structures with high uncertainty; obtaining a first-principles structure database of the real liquid phase environment through several iterations; and training to obtain the final high-performance machine learning potential energy model. This invention systematically and comprehensively samples the chemical species composition space of the electrolyte and the molecular simulation configuration space based on hierarchical active learning, thereby ensuring the predictive performance and simulation accuracy of the machine learning potential model on unknown and complex electrolyte systems.

Systems, methods, and devices for active learning are provided. The system includes a data storage device, a dataset analysis tool, a synthetic data generation module, an anomaly module, an image search engine module, an explainable AI module, an automated training platform, and optionally, a federated learning module. The system may be configured to operate on a general-purpose or dedicated computer and may further include a processor, memory, and a network interface. The system analyzes the provided dataset and generates synthetic data for augmenting the data within the provided dataset through the interaction of its components. The provided data and the generated data are used to train a machine learning model. The system may be operated iteratively and sequentially to continuously improve the machine learning model trained by the system by applying explainable artificial intelligence techniques with little or no human intervention.

The invention discloses an efficient deep batch active learning method and system based on gradient regularization, and relates to the technical field of machine learning and artificial intelligence, and the method comprises the steps: obtaining an unmarked sample, inputting the unmarked sample into a pre-established deep neural network model, and carrying out the output to obtain an output probability vector and a feature vector of a penultimate layer; according to the output probability vector and the feature vector of the penultimate layer, allocating a pseudo tag to the unmarked sample, calculating a gradient block of each category of the output layer based on the pseudo tag, performing regularization processing on the gradient blocks, retaining the gradient blocks corresponding to the category of the preset output probability, performing zero setting on the other gradient blocks, and generating a sparse gradient matrix; the method comprises the following steps: performing classification-level and sample-level hierarchical distance calculation on the basis of a sparse gradient matrix to obtain a sample-level distance, performing diversity sampling according to the sample-level distance, selecting representative samples by using a k-means + + clustering algorithm for labeling, and realizing acceleration and performance optimization of sample selection in deep batch active learning.

A computing system including one or more processing devices configured to compute a simulation of a chemical system. Computing the simulation includes, at a machine learning force fields (MLFF) model, computing local label sets of respective local regions. Each local label set includes MLFF labels. Computing the simulation further includes computing local uncertainty values and identifying local regions based on the uncertainty values. For each identified local region, computing the simulation further includes computing a substructure that surrounds that region. The substructure is selected by computing a substructure boundary that approximately minimizes a substructure uncertainty. Computing the simulation further includes selecting atomic positions within the substructure that approximately minimize the substructure uncertainty. Computing the simulation further includes computing substructure labels via quantum chemical simulation, training the MLFF model using the substructure labels, and outputting a potential energy surface (PES) specified by the MLFF labels and the substructure labels.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for training a machine learning model. In one aspect, a method comprises: determining a respective importance score for each mRNA codon in a set of possible mRNA codons; at each of a plurality of training iterations in a sequence of training iterations, selecting a current batch of mRNA sequences for training the machine learning model at the training iteration using the importance scores for the mRNA codons, and training the machine learning model on at least the current batch of mRNA sequences; and outputting the trained machine learning model.

The invention provides an infertility patient pregnancy prediction method based on active learning and an integrated model, and the method comprises the following steps: carrying out the preprocessing of collected data, including classification variable coding, standardization processing and multi-dimensional abnormal value detection; generating a few categories of synthetic samples through an SMOTE technology, and optimizing data distribution in combination with a Tomek Links method; training a pregnancy prediction model based on machine learning models such as a random forest and XGBoost; the prediction results of the multiple basic models are fused through the Blending technology; based on an uncertainty sampling strategy, selecting samples for labeling and carrying out mixed training; and the pregnancy success prediction probability and credibility are output by inputting patient data. According to the method, the prediction accuracy and stability of the model can be improved, the robustness of the model to noise data and boundary samples is improved, the generalization ability of the model on new data is improved to a certain extent, doctors and patients can obtain more accurate treatment decision support, and the success rate and efficiency of IVF-ET treatment are improved.

A method of automated control of a microscope in cryogenic electron microscopy (cryo-EM), wherein the microscope is configured to collect high-magnification micrographs of particles suspended in vitreous ice. Such particles are found in grid squares, and a square contains holes from which high-magnification micrographs are imaged. The method is carried out during an active data collection session, leveraging a pipeline that comprises a set of models. The pipeline evaluates a set of collection locations to determine whether to continue collection at a current grid / square or instead at a new grid / square. The evaluation is based on a set of one or more quality scores derived from one or more pretrained models and machine learning-based active learning. Based on the determination, control information is provided to automatically control the microscope to move to a next target for data collection.

The application discloses an intelligent collaborative optimization design method for a flexible OLED module protection structure, and belongs to the technical field of flexible electronic protection and intelligent structure optimization. In view of the problems of the prior art, such as dependence on manual experience iteration, difficulty in taking into account the impact resistance and bending resistance, long design cycle, high trial and error cost, lack of physical constraints in traditional data-driven models, and insufficient prediction accuracy, the application first constructs a material-interface-module full-level mechanical response database, and collects test and simulation data under multiple working conditions. Then, the calibration and accuracy verification of material constitutive parameters are carried out, and a high-fidelity finite element simulation model is established to expand the data samples. On this basis, an agent model and a multi-objective optimization model are constructed by combining a machine learning algorithm, a high-precision mapping relationship between the structure parameters and the comprehensive protection performance is established, and finally, according to the target performance, reverse deduction and collaborative optimization are carried out, and the optimal structure parameters are output, and an active learning mechanism is introduced to realize the iterative updating of the model. The application realizes the paradigm shift of the flexible OLED module from "forward experience trial and error" to "target-driven reverse intelligent design", can simultaneously improve the impact resistance and bending resistance of the module, realizes the lightweight of the structure, greatly improves the design efficiency, and is suitable for the optimization design of the module protection structure of the folding screen, the crimping screen and the wearable flexible display terminal.

A machine learning algorithm trained to classify objects in automotive sensor data is provided with automotive sensor data as an input. Based on this input, the machine learning algorithm determines an object class. Then, a latent space vector corresponding to activation values within a latent space of the machine learning algorithm is obtained and at least one latent space vector variance is calculated. If the at least one latent space vector variance exceeds a variance threshold, a latent space vector distance quotient is determined, which is indicative of a distance of the latent space vector to a closest object class latent space vector of the same object class relative to a distance of the latent space vector to a closest latent space vector of a different object class. Finally, the automotive sensor data is provided to an object classifier based on the latent space vector distance quotient.

The present application belongs to the technical field of computer vision and machine learning, and discloses a supervised data generation method based on video semantic structured analysis, which comprises the following steps: initialization, construction of a labeled set and an unlabeled set, training of a video script generation model, preparation of a large visual-language model, determination of the number of active learning selection stages and the budget selected in each stage; sampling the video in the unlabeled set to obtain frames, generating image descriptions through the large visual-language model, and simultaneously generating scripts through the video script generation model; converting the image descriptions and scripts in text form into scene graphs by referring to SPICE; and calculating the learnability score of the unlabeled video by internally and externally measuring the samples, wherein the method follows a pool-based active learning process, effectively utilizes learnability, diversity and uncertainty to supervise data labeling of the most valuable videos.

The application discloses an adaptive fault diagnosis method and device based on active learning and related medium, and the method comprises the following steps: obtaining historical fault data of equipment, wherein the historical fault data comprises a source domain and a target domain; sampling fault data in the target domain based on an energy-based sampling strategy to obtain a target sample set of the target domain; labeling the fault data in the target sample set, and merging the target sample set and the fault data in the source domain into a sample data set; training and learning sample data in the sample data set by using a supervised machine learning model to construct a fault diagnosis model; and using the fault diagnosis model to perform fault diagnosis classification on specified equipment state data. The valuable fault data is selected by using the energy-based sampling strategy, and is used for training and learning of the fault diagnosis model, so that the fault diagnosis accuracy and efficiency of the equipment can be improved.

The present disclosure relates to systems, non-transitory computer-readable media, and methods for efficiently acquiring biological data via active machine learning. In particular, in some embodiments, the disclosed systems generate, utilizing a map prediction machine learning model, similarity prediction confidence scores for a plurality of perturbation pairs. In addition, in some embodiments, the disclosed systems determine, from the similarity prediction confidence scores utilizing an acquisition function, a perturbation pair for developing a ground truth similarity. Moreover, in some embodiments, the disclosed systems generate a tuned map prediction model by comparing a similarity prediction for the perturbation pair generated by the map prediction machine learning model with the ground truth similarity. Furthermore, in some embodiments, the disclosed systems utilize, in response to determining that a measure of confidence for the tuned map prediction model satisfies a stopping criterion, the tuned map prediction model to generate a blended map of biology.

An industrialized system (1) and method for rice grain recognition is proposed. An optical image (123) is captured by a user (5) and transmitted to a digital platform (11), wherein the system (1) segments the optical image (123) and extracts and / or measures appropriate grain features (41) describing different aspects of the grain (4) from the image (123). The image (123) is processed by the system (1), which includes a selector (1122) that selects different machine learning structures (11211, ..., 1121i), applies the different machine learning structures (11211, ..., 1121i) to the extracted features (41) for rice grain (4) recognition, and selects the best machine learning structure among the applied machine learning structures (11211, ..., 1121i) by a random sampling process. The best of the selected applied machine learning structures (11211, ..., 11211) is further optimized by changing the appropriate threshold value (11231) based on the included confusion matrix (11221) by the threshold trigger (1123). The active learning structure (113) provides a feedback loop to the user or human expert (5) based on the confusion matrix (11221) including the values ​​of true positive (TP), false negative (FN), false positive (FP) and true negative (TN) for the classified rice grains, wherein the system (1) is retrained based on the feedback parameters of the feedback loop (1132).

The application provides a position parameter estimation method and device, comprising: obtaining a semi-supervised data set and a received waveform at a target time; inputting the semi-supervised data set and the received waveform into a pre-constructed semi-supervised position parameter estimation model to obtain a distribution inference result; wherein the semi-supervised position parameter estimation model is trained based on a deep neural network using a sample data set using a variational inference theory, and at least comprises an encoder and a regressor. The semi-supervised position parameter estimation model provided by the application has the ability of active learning in inference, can effectively utilize the semi-supervised data set for parameter inference, can significantly reduce the communication, calculation and data set acquisition costs generated by the deployment of the machine learning algorithm in the positioning system, and realizes higher precision and higher generalization of the position parameter estimation.

The invention discloses a method, a device and equipment for estimating a reaction etching selection ratio of a laminated material, relates to the technical field of etching in microelectronic manufacturing, and is used for solving the problem that a micro-scale etching selection ratio is difficult to efficiently obtain in the prior art. Comprising the steps of obtaining a basic data set of a laminated material; integrating and screening the basic data set to obtain an initial sample; based on the initial sample, optimizing the basic data set by adopting an iterative optimization mechanism of a machine learning dynamic situation function of active learning iterative sampling to obtain a final potential function; and performing molecular dynamics simulation based on the final potential function, and estimating the reaction etching selection ratio of the laminated material in combination with an adaptive time step algorithm. According to the invention, a high-precision machine learning potential function can be formed and a dynamic model of an etching process can be completed; and quantitatively calculating the reaction rate difference of each layer of material, and deducing the etching selection ratio.