8 results about "Bayes analysis" patented technology

The invention discloses a construction method of a malignant pleural effusion prediction model, a marker combination and application, equipment and a medium. The construction method comprises the following steps: S1, obtaining characteristics of a biomarker combination; the biomarker combination is composed of three biomarkers of NGAL, CEA and CA50; s2, based on the characteristics of the biomarker combination, adopting Logistic regression analysis to respectively construct regression models corresponding to the three biomarkers, and respectively outputting parameters alpha NGAL, beta NGAL, alpha CEA, beta CEA, alpha CA50 and beta CA50; and S3, based on the output parameters in the step S2, adopting Bayesian analysis to construct a malignant pleural effusion prediction model. The method can be used for predicting the MPE probability in the pleural effusion patient, the identification and prediction accuracy is high, and compared with pleural biopsy and thoracoscopic sampling biopsy, the method has the advantages of being rapid, minimally invasive and the like.

The invention provides an intrinsic measurement method and device for thorium. The intrinsic measurement method comprises the following steps: recording detection time of alpha particles released by decay of to-be-measured < 220 > Rn gas and daughter < 216 > Po in a measurement chamber; performing Bayesian analysis according to the detection time, and calculating a 220Rn-216Po true coincidence count; and according to the < 220 > Rn count, the < 216 > Po count and the < 20 > Rn-< 216 > Po true coincidence count, calculating the activity concentration of the thorium. According to the intrinsic measurement method and device, two alpha particles emitted by successive decay of 220Rn and 216Po are utilized to form an intrinsic characteristic conforming to a signal, so that the detection efficiency is reduced; the detection efficiency is reduced, so that the method and the device do not need to measure the detection efficiency of the standard scale from the outside, and have self-traceability; meanwhile, the influence of the change of the detection efficiency on the measurement accuracy is avoided, and the measurement accuracy is improved.

The application discloses a kind of original light element abundance prediction and parameter estimation method, including setting cosmological parameter and the sampling range of rigid phase correction factor, batch generation structured data set containing multiple light element theoretical abundance using numerical calculation code;Deep network model integrating multi-head attention mechanism and deep residual block is constructed, and the nonlinear mapping from parameter space to abundance space is established by supervised training;The model is encapsulated as a likelihood function interface, integrated into the Cobaya Bayesian analysis framework, and the forward inference is performed using the computing kernel;Combined with the actual observation data constraint, the parameter space is automatically sampled using the Markov Chain Monte Carlo algorithm, and the posterior probability density distribution of each physical parameter is output.The application effectively solves the problem of low efficiency in solving high-dimensional rigid equation set in original nucleosynthesis, and can quantitatively analyze the tension between lithium abundance observation data, and reveal the potential physical path of rigid phase correction parameter to alleviate the lithium problem.

This invention relates to an improved CBBA (Continuous Computational Bayes Analysis) task allocation method for unmanned surface vessels (USVs) based on MOAWC-Kmeans clustering, belonging to the field of unmanned autonomous collaborative control technology. The method first uses the MOAWC-Kmeans algorithm to intelligently pre-cluster tasks, employing adaptive weight calculation, intelligent initialization, constraint-optimized allocation, and a boundary task secondary optimization mechanism to achieve task grouping. Second, distributed task allocation is performed based on the improved CBBA algorithm, with each USV prioritizing bidding for tasks within its pre-clustered cluster. This method introduces a hard time window constraint mechanism, dynamically pruning to remove non-compliant tasks. During path construction, a two-layer strategy combining greedy construction and local search is used to optimize the path structure in real time. After negotiation convergence, unassigned tasks are greedily inserted according to the time window urgency index, and the Or-opt path reconstruction mechanism is used for deep path reconstruction. Finally, load balancing adjustments further optimize cluster efficiency. Compared with existing technologies, this invention significantly improves the task completion rate, path efficiency, and load balancing of heterogeneous USV clusters, making it suitable for complex application scenarios such as maritime search and rescue and patrol monitoring.

The embodiment of the application discloses a DBN model lightweight method of a multiple-electric aircraft starting power generation system based on GBIC, relates to the technical field of reliability design and modeling of complex equipment systems, and comprises the following steps: a DBN model of a starting power generation system is established, nodes in the DBN model correspond to key components and working states of the starting power generation system, directed edges in the DBN model are used for describing mutual relations between nodes, redundant structures in the DBN model are identified and lightweight processing is performed, and a fault state of the starting power generation system is identified by using the DBN model subjected to the lightweight processing.The embodiment of the application introduces a grey system theory and a Bayesian information criterion aiming at the problems of complex and low efficiency of reasoning calculation in the process of a dynamic Bayesian analysis method of a complex polymorphic system, realizes lightweight of the dynamic Bayesian network of the complex polymorphic system, eliminates redundant structures, and guarantees the accuracy of results.

This invention discloses a method, apparatus, computer-readable storage medium, and product for identifying liver lobule regions based on spatial transcriptome sequencing data, relating to the field of liver lobule region technology. The method includes: normalizing the spatial transcriptome data matrix of the liver and performing regression analysis to identify highly variable genes; performing principal component analysis on the highly variable genes to determine principal components; performing Bayesian analysis on the principal components to perform unsupervised clustering of cells / regions in the spatial transcriptome data matrix to obtain cell / region cluster information; and identifying liver lobule regions based on the cluster information. This invention achieves rapid identification of liver lobule regions based on spatial transcriptome sequencing data by spatial clustering, limiting the number of clusters, and combining this with the expression abundance distribution of specific biomarkers.

The application discloses a kind of movie rating system and method based on big data, including data acquisition layer, data storage and processing layer, model construction layer, service layer and user interface layer: data acquisition layer: carry out data acquisition;Data storage and processing layer: the data cleaning and pretreatment to the data collected, extract features from the data after pretreatment;Model construction layer: responsible for processing and analyzing big data, generating movie rating, using naive bayes analysis user behavior data, quantifying positive / negative sentiment, when the sentiment of a particular group is imbalanced, use focal loss to reduce the weight of easily classified samples, based on movie features, multi-dimensional features and time features, use multi-task learning to train multiple XGBoost models, predict ratings in different dimensions respectively, naive bayes analysis results provide sentiment input for different dimensions, at the same time, combined with group characteristics, provide personalized ratings for different groups.

The application discloses a PD movement subtype classification method based on transcranial Doppler and Bayesian analysis, and relates to the technical field of medical diagnosis, and comprises the following steps: S1, collecting the cerebral blood flow velocity signals of a subject under different physiological conditions through a transcranial Doppler device, and synchronously collecting the arterial blood pressure signals through a continuous noninvasive blood pressure monitoring device; S2, processing the signals collected in S1, and extracting characteristic indexes reflecting the dynamic cerebral blood flow automatic regulation function; S3, combining the characteristic indexes with basic hemodynamic parameters to form a characteristic vector; S4, inputting the characteristic vector into a pre-trained Bayesian discriminant model; and S5, according to the output of the Bayesian discriminant model, classifying the subject into different Parkinson's disease movement subtypes. The application has the advantages of improving classification objectivity, capturing dynamic physiological signal characteristics, and realizing precise subtype identification.