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44 results about "Linear solver" patented technology
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Fluid analyzer and associated methods
Devices, computer readable programs and methods determine a patient parameter, including volume and / or flow rate of a fluid draining through a drain tube from a chest cavity of a patient, by using at least one pressure value at an end of the drain tube associated with a fluid collection canister and at least one pressure value within the drain tube at a location distant from the collection canister. The pressure values are processed with a non-linear solver to determine the patient parameter.
Owner:ATRIUM MEDICAL
Method, system and program storage device for simulating fluid flow in a physical system using a dynamic composition based extensible object-oriented architecture
ActiveUS20060282243A1Minimizing combinatorial expansionMinimizing expansionDesign optimisation/simulationSpecial data processing applicationsComputational sciencePhysical system
The present invention provides a method, a system and a program storage device containing instructions for simulating the flow of fluid in a physical system using a composition-based extensible object-oriented program. A computer program includes: (i) a framework subsystem providing a graph package, a compute package and a property package; (ii) an engine subsystem including engine subsystem packages for performing numerical simulation, the engine subsystem packages including a linear solver package and a non-linear solver package; and (iii) a set of model components providing physical and numerical modeling behaviors utilized by the engine subsystem, the model components including at least one of a reservoir model, a well model, an aquifer model, a fluid model and a SCAL model. The framework subsystem, the engine subsystem and the model components work with one other to simulate the flow of fluid. Preferably, a partition package is used to create a partition of subsets of node and edge indices which can be used optimize computations by the program.
Owner:SCHLUMBERGER TECH CORP +1
Tiled architecture for stationary-method iterative linear solvers
InactiveUS20090172052A1Well formedComputation using non-contact making devicesComplex mathematical operationsAlgorithmLinear solver
A system for solving linear equations comprises a first circuit including a first multiplication module for multiplying a first row of a matrix by a first instance of a vector variable to generate a first product, and a first linear solver module for calculating an updated first element of the vector variable using the first product. A second circuit includes a second multiplication module for multiplying a second row of the matrix by a second instance of the vector variable to generate a second product, and a second linear solver module for calculating an updated second element of the vector variable using the second product. An interface module updates the second instance of the vector variable with the first updated element, and updates the first instance of the vector variable with the second updated element.
Owner:L 3 COMM CORP
Method, system and program storage device for simulating fluid flow in a physical system using a dynamic composition based extensible object-oriented architecture
ActiveUS7617082B2Minimizing expansionDesign optimisation/simulationSpecial data processing applicationsComputational scienceGraphics
The present invention provides a method, a system and a program storage device containing instructions for simulating the flow of fluid in a physical system using a composition-based extensible object-oriented program. A computer program includes: (i) a framework subsystem providing a graph package, a compute package and a property package; (ii) an engine subsystem including engine subsystem packages for performing numerical simulation, the engine subsystem packages including a linear solver package and a non-linear solver package; and (iii) a set of model components providing physical and numerical modeling behaviors utilized by the engine subsystem, the model components including at least one of a reservoir model, a well model, an aquifer model, a fluid model and a SCAL model. The framework subsystem, the engine subsystem and the model components work with one other to simulate the flow of fluid. Preferably, a partition package is used to create a partition of subsets of node and edge indices which can be used optimize computations by the program.
Owner:SCHLUMBERGER TECH CORP +1
Giga-cell linear solver method and apparatus for massive parallel reservoir simulation
ActiveUS20130211800A1Computation using non-denominational number representationDesign optimisation/simulationComputational scienceImage resolution
A linear solver methodology is applied to reservoir data to solve for large system of equations arising from high-resolution reservoir simulation of giant oil fields with minimal upscaling using either structured grids or unstructured grids. Full geologic complexity and discontinuities at the resolution desired for accurate simulation results may be taken into account. A general unstructured method is provided, so that very complex flow geometry near multi-lateral wells can be modeled.
Owner:SAUDI ARABIAN OIL CO
System for conjugate gradient linear iterative solvers
InactiveUS20110010409A1Well formedComputation using non-contact making devicesDigital computer detailsGreek letter betaProcessing element
A system for a conjugate gradient iterative linear solver that calculates the solution to a matrix equation comprises a plurality of gamma processing elements, a plurality of direction vector processing elements, a plurality of x-vector processing elements, an alpha processing element, and a beta processing element. The gamma processing elements may receive an A-matrix and a direction vector, and may calculate a q-vector and a gamma scalar. The direction vector processing elements may receive a beta scalar and a residual vector, and may calculate the direction vector. The x-vector processing elements may receive an alpha scalar, the direction vector, and the q-vector, and may calculate an x-vector and the residual vector. The alpha processing element may receive the gamma scalar and a delta scalar, and may calculate the alpha scalar. The beta processing element may receive the residual vector, and may calculate the delta scalar and the beta scalar.
Owner:L 3 COMM INTEGRATED SYST
Unified optimization method for end-to-end camera image processing for translating a sensor captured image to a display image
ActiveUS20150206504A1Need can be replacedEasy to adaptImage enhancementTexturing/coloringCamera imageImaging processing
A computer implemented method of determining a latent image from an observed image is disclosed. The method comprises implementing a plurality of image processing operations within a single optimization framework, wherein the single optimization framework comprises solving a linear minimization expression. The method further comprises mapping the linear minimization expression onto at least one non-linear solver. Further, the method comprises using the non-linear solver, iteratively solving the linear minimization expression in order to extract the latent image from the observed image, wherein the linear minimization expression comprises: a data term, and a regularization term, and wherein the regularization term comprises a plurality of non-linear image priors.
Owner:NVIDIA CORP
Unified optimization method for end-to-end camera image processing for translating a sensor captured image to a display image
ActiveUS20170011710A1Need can be replacedEasy to adaptImage enhancementGeometric image transformationCamera imageImaging processing
A computer implemented method of determining a latent image from an observed image is disclosed. The method comprises implementing a plurality of image processing operations within a single optimization framework, wherein the single optimization framework comprises solving a linear minimization expression. The method further comprises mapping the linear minimization expression onto at least one non-linear solver. Further, the method comprises using the non-linear solver, iteratively solving the linear minimization expression in order to extract the latent image from the observed image, wherein the linear minimization expression comprises: a data term, and a regularization term, and wherein the regularization term comprises a plurality of non-linear image priors.
Owner:NVIDIA CORP
Hand-eye system self-calibration method based on active visual sense
The invention relates to a hand-eye system self-calibration method based on active visual sense, and belongs to the robot calibration technical field; the realization steps comprise the following steps: 1, building a coordinate transition relation between all reference coordinate systems in a camera imaging system; 2, building a coordinate transition relation between all reference coordinate systems in a hand-eye system; 3, building a coordinate transition relation between a CCD imaging plane and a world coordinate system in the hand-eye system; 4, controlling a camera in the hand-eye system to make the first translational motion; 5, controlling the camera in the hand-eye system to continuously make the second non-linear translational motion; 6, linear-solving a hand-eye relation rotate matrix in the hand-eye system; 7, controlling the camera to make the first non-linear translational motion; 8, linear-solving a camera inner reference matrix in the hand-eye system; 9, linear-solving a characteristic points object depth; 10, controlling the camera in the hand-eye system to make the first real rotary movement; 11, controlling the camera to make the first virtual rotation; 12, calibrating a hand-eye relation translation vector.
Owner:WUXI VOCATIONAL & TECHN COLLEGE
System for convergence evaluation for stationary method iterative linear solvers
InactiveUS20110010410A1Well formedComputation using non-contact making devicesDigital computer detailsReconfigurable computingComputer science
A system for evaluating the convergence to a solution for a matrix equation comprises at least one reconfigurable computing device such as a field programmable gate array (FPGA), an update storage element, a conversion element, a summation unit, and a comparator. The FPGA includes a plurality of configurable logic elements and a plurality of configurable storage elements, which are utilized to form the update storage element, the conversion element, the summation unit, and the comparator. The update storage element is configured to store a plurality of updates. The conversion element determines the absolute value of the updates. The summation unit accumulates the absolute values of the updates to produce a total sum, which is compared to a convergence factor by the comparator. Convergence is signaled when the total sum is less than the convergence factor.
Owner:L 3 COMM INTEGRATED SYST
Image recovery using thresholding and direct linear solvers
Owner:SEIKO EPSON CORP
Giga-cell linear solver method and apparatus for massive parallel reservoir simulation
ActiveUS9208268B2Computation using non-denominational number representationDesign optimisation/simulationComputational scienceImage resolution
Owner:SAUDI ARABIAN OIL CO
System for conjugate gradient linear iterative solvers
InactiveUS8577949B2Computation using non-contact making devicesDigital computer detailsProcessing elementComputer science
A system for a conjugate gradient iterative linear solver that calculates the solution to a matrix equation comprises a plurality of gamma processing elements, a plurality of direction vector processing elements, a plurality of x-vector processing elements, an alpha processing element, and a beta processing element. The gamma processing elements may receive an A-matrix and a direction vector, and may calculate a q-vector and a gamma scalar. The direction vector processing elements may receive a beta scalar and a residual vector, and may calculate the direction vector. The x-vector processing elements may receive an alpha scalar, the direction vector, and the q-vector, and may calculate an x-vector and the residual vector. The alpha processing element may receive the gamma scalar and a delta scalar, and may calculate the alpha scalar. The beta processing element may receive the residual vector, and may calculate the delta scalar and the beta scalar.
Owner:L 3 COMM INTEGRATED SYST
Method and system for operating a hydrocarbon production facility
InactiveCN1688994AData processing applicationsAnalogue computers for chemical processesMathematical modelComputerized system
A computerized system and method for operating a hydrocarbon or chemical production facility, comprising mathematically modeling the facility; optimizing the mathematic model with a combination of linear and non-linear solvers; and generating one or more product recipes based upon the optimized solution. In an embodiment, mathematic model further comprises a plurality of process equations having process variables and corresponding coefficients, and preferably wherein the process variables and corresponding coefficients are used to create a matrix in a linear program. The linear program may be executed via recursion or distributed recursion. Upon successive recursion passes, updated values for a portion of the process variables and corresponding coefficients are calculated by the linear solver and by a non-linear solver, and the updated values the process variables and corresponding coefficients are substituted into the matrix.
Owner:FINA TECH
Matched Order Fulfillment with Linear Optimization
A method for matching compound orders from a group of market participants includes receiving, via a communication network, compound order data, the compound order data specifying a maximum amount of a financial instrument of a plurality of financial instruments to be bought or sold by each market participant, accessing a memory in which price data is stored, the price data indicating a current price of each financial instrument, implementing, with a processor, a linear solver to maximize fulfillment of the compound orders via order matching for execution at the current prices in accordance with the maximum amounts specified in the compound order data and in accordance with a maximum net risk exposure level for each market participant arising from the fulfillment of the compound orders, and transmitting trade data indicative of the order matching for execution of trades among the market participants at the current prices.
Owner:CHICAGO MERCANTILE EXCHANGE
Tiled architecture for stationary-method iterative linear solvers
InactiveUS8166090B2Computation using non-contact making devicesComplex mathematical operationsAlgorithmComputer science
A system for solving linear equations comprises a first circuit including a first multiplication module for multiplying a first row of a matrix by a first instance of a vector variable to generate a first product, and a first linear solver module for calculating an updated first element of the vector variable using the first product. A second circuit includes a second multiplication module for multiplying a second row of the matrix by a second instance of the vector variable to generate a second product, and a second linear solver module for calculating an updated second element of the vector variable using the second product. An interface module updates the second instance of the vector variable with the first updated element, and updates the first instance of the vector variable with the second updated element.
Owner:L 3 COMM CORP
Unified optimization method for end-to-end camera image processing for translating a sensor captured image to a display image
ActiveUS9558712B2Need can be replacedEasy to adaptImage enhancementGeometric image transformationCamera imagePattern recognition
Owner:NVIDIA CORP
Fluid analyzer and associated methods
Devices, computer readable programs and methods for determining a patient parameter, including volume and / or flow rate of a fluid draining through a drain tube from a chest cavity of a patient, by using at least one pressure value at an end of the drain tube associated with a fluid collection canister and at least one pressure value within the drain tube at a location distant from the collection canister. The pressure values are processed with a non-linear solver to determine the patient parameter.
Owner:ATRIUM MEDICAL
Convergence Estimation OF Non-Linear PDE And Linear Solvers
ActiveCN107016155ADesign optimisation/simulationComplex mathematical operationsComputerized systemComputer science
The invention discloses a computer realization method for providing simulation of a physical real-world system, a computer system and a computer program product. A method, according to an embodiment, provides a simulation of a physical real-world system, by first generating a system of equations that includes a discrete representation of the real-world system being simulated. Next, the real-world system is simulated. In simulating the system, a user specified tolerance of a solution of the system of equations is obtained. Then, the system of equations is iteratively solved until a solution to the system of equations for a given iteration is within the user specified tolerance of the solution of the system of equations for approximately infinite iterations. In such an embodiment, the solution to the system of equations for the given iteration is determined to be within the user specified tolerance using an experimentally determined constant, an estimate of a minimum eigenvalue of the system of equations for the given iteration, and a residual of the system of equations for the given iteration.
Owner:DASSAULT SYSTEMES SIMULIA CORP
Accelerating method of linear solver, storage database and GPU system
ActiveCN107529638AEasy to readEasy accessResource allocationComplex mathematical operationsGraphicsGrid cell
The embodiment of the invention provides an accelerating method of a linear solver, a storage database and a graphics processing unit system, wherein the storage database comprises a first storage unit, a second storage unit and an index unit; the first storage unit is used for storing a grid cell identifier of a storage task block; the second storage unit is used for storing an identifier of an inner face and inner face data corresponding to the inner face identifier, the inner face is a plane for connecting two grid cell units, and the inner face data corresponding to the inner face identifier mapped to a same grid cell unit is stored in an adjacent storage region of the second storage unit; and the index unit is used for constructing and storing an index range of the grid cell identifier, wherein the index range comprises a mapping relationship between the grid cell identifier and the inner face identifier. According to the accelerating method of the linear solver, the storage database and the graphics processing unit system provided by the invention, accelerated calculation of the linear solver can be achieved, so that the calculating efficiency is improved.
Owner:浙江远算科技有限公司
System and Method for Simulation of Gas Desorption in a Reservoir Using a Multi-Porosity Approach
A hydrocarbon shale reservoir simulation system and method represented by a model having at least four different types of porosity nodes is described. The method includes the computer-implemented steps of characterizing porosity nodes within the model as one of natural fracture pore systems, matrix pore systems, induced fracture pore systems or vug pore systems. Following characterization, transfer terms between nodes are identified. Transfer terms may include transfer terms between vug nodes, matrix nodes, natural fracture nodes and induced fracture nodes. Once transfer terms have been assigned, the linear system for the model can be solved utilizing a linear solver. The method further includes the steps of utilizing the characterized pore nodes to define one or more subgrids that represent a zone within the reservoir, wherein the zone includes at least one node of each porosity type; and wherein the linear solver is applied by subgrid or associated sub-grids.
Owner:LANDMARK GRAPHICS
Equation distribution pressure-based method for realizing bearing shell load simulation
ActiveCN106980739AGuaranteed accuracySimple to satisfy, time-consuming to computeGeometric CADDesign optimisation/simulationEngineeringStressed state
The invention discloses an equation distribution pressure-based method for realizing bearing shell load simulation. Radial force of a bearing is loaded in a radial hemihedral region in an equation distribution pressure form; the value of the force is changed with the position; a direction is always perpendicular to a loading surface, so that a stress state of a shell is closer to reality; by adopting a linear solver, stress and displacement calculation results of the shell are obtained; and a simpler and more reliable basis is provided for shell quality assessment, structure design optimization, rib position arrangement and the like. According to the method, a bearing part and a contact pair do not need to be established, so that calculation convergence is ensured and the labor and calculation costs are greatly reduced on the premise of ensuring calculation accuracy; and therefore, the requirements of simple modeling, short calculation time and low resource occupation are met and the accuracy of a calculation result can be ensured.
Owner:SHANGHAI AUTOMOBILE GEAR WORKS
System for matrix partitioning in large-scale sparse matrix linear solvers
InactiveUS20100169403A1Complex mathematical operationsComputation using denominational number representationParallel computingProcessing element
A system for solving large-scale matrix equations comprises a plurality of field programmable gate arrays (FPGAs), a plurality of memory elements, a plurality of memory element controllers, and a plurality of processing elements. The FPGAs may include a plurality of configurable logic elements and a plurality of configurable storage elements. The memory elements may be accessible by the FPGAs and may store a matrix and a first vector. The memory element controllers may be formed from configurable logic elements and configurable storage elements and may supply at least a portion of a row of the matrix and at least a portion of the first vector. Each processing element may receive at least the row of the matrix and the first vector and solve an iteration for one element of the first vector.
Owner:L 3 COMM CORP
Fluid analyzer and associated methods
Devices, computer readable programs and methods determine a patient parameter, including volume and / or flow rate of a fluid draining through a drain tube from a chest cavity of a patient, by using at least one pressure value at an end of the drain tube associated with a fluid collection canister and at least one pressure value within the drain tube at a location distant from the collection canister. The pressure values are processed with a non-linear solver to determine the patient parameter.
Owner:ATRIUM MEDICAL
Inventory determination method and device
The invention discloses an inventory determination method and device, and relates to the technical field of warehouse logistics. The specific embodiment of the method comprises the following steps: acquiring article data of various articles; according to the cost parameter, determining the inventory holding cost of the article, and taking the minimum inventory holding cost as an objective function of the service level optimization model; performing linear conversion on a nonlinear function in the service level optimization model according to replenishment parameters, demand parameters and inventory parameters of the articles; solving the service level optimization model by using a linear solver according to the objective function and the converted linear function; and determining the service level of the article according to the solving result, and further determining the inventory of the article according to the service level. According to the embodiment, the inventory determination accuracy is improved, the linear solver is used for solving, the solving speed can be increased, the solving efficiency can be improved, the safe inventory of various commodities in actual storage can be accurately determined, and the storage cost is reduced.
Owner:BEIJING JINGDONG ZHENSHI INFORMATION TECH CO LTD
System for convergence evaluation for stationary method iterative linear solvers
InactiveUS9176928B2Computation using non-contact making devicesCode conversionReconfigurable computingEvaluation system
A system for evaluating the convergence to a solution for a matrix equation comprises at least one reconfigurable computing device such as a field programmable gate array (FPGA), an update storage element, a conversion element, a summation unit, and a comparator. The FPGA includes a plurality of configurable logic elements and a plurality of configurable storage elements, which are utilized to form the update storage element, the conversion element, the summation unit, and the comparator. The update storage element is configured to store a plurality of updates. The conversion element determines the absolute value of the updates. The summation unit accumulates the absolute values of the updates to produce a total sum, which is compared to a convergence factor by the comparator. Convergence is signaled when the total sum is less than the convergence factor.
Owner:L 3 COMM INTEGRATED SYST
Acceleration method, storage database and gpu system of linear solver
ActiveCN107529638BEasy to readEasy accessResource allocationComplex mathematical operationsComputational scienceGraphics
Embodiments of the present invention provide an acceleration method for a linear solver, a storage database, and a graphics processor system, wherein the storage database includes: a first storage unit for storing grid unit identifiers of task blocks; a second storage unit , which is used to store the identification of the inner face and the inner face data corresponding to the inner face identification, the inner face is a plane connecting two grid cells, and is mapped to the inner face identification of the same grid cell identification. The internal surface data is stored in the adjacent storage area of the second storage unit; the index unit is used to construct and store the index range of the grid unit identifier, and the index range includes the grid unit identifier and the Mapping relationship of internal face IDs. The acceleration method for a linear solver, a storage database, and a graphics processing system provided by the embodiments of the present invention can realize the accelerated operation of the linear solver and improve the calculation efficiency.
Owner:浙江远算科技有限公司
Integrating interval constraint propagation with nonlinear real arithmetic
ActiveUS8538900B2Digital computer detailsComputation using non-denominational number representationReal arithmeticSatisfiability
A system and method for deciding the satisfiability of a non-linear real decision problem is disclosed. Linear and non-linear constraints associated with the problem are separated. The feasibility of the linear constraints is determined using a linear solver. The feasibility of the non-linear constraints is determined using a non-linear solver which employs interval constraint propagation. The interval solutions obtained from the non-linear solver are validated using the linear solver. If the solutions cannot be validated, linear constraints are learned to refine a search space associated with the problem. The learned constraints and the non-linear constraints are iteratively solved using the non-linear solver until either a feasible solution is obtained or no solution is possible.
Owner:NEC CORP
Apparatus, method and system for improved reservoir simulation using an algebraic cascading class linear solver
Owner:CHEVROU USA INC +1
A straight line in space linearly solves the internal parameters of the parabolic catadioptric camera
The invention relates to a method to solve parabolic catadioptric camera parameters through one straight line in space. The method is that a calibration object composed of the straight line in the space is used for self-calibration of a parabolic catadioptric camera. Three images of the calibration object are shot by the parabolic catadioptric camera from different directions. A parabolic catadioptric image of a straight line is a quadric curve. Boundary pixel point coordinates and image point coordinates of the three calibration objects images are extracted from the images to respectively fit curvilinear equations. Images of circular ring points on image planes are obtained according to a polarity principle. Camera parameters are solved by utilizing the linear constraint of the images on the circular ring points on an image of an absolute conic. By utilizing the method, the calibration object can be fully and automatically calibrated, and errors caused by measurement in the calibration process are reduced. Because a straight line is a more concise and more global element, calibration precision of the camera in the calibration process is improved.
Owner:YUNNAN UNIV
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