99 results about "Functional dependency" patented technology

The functional dependency of a first X-ray absorption value of density and atomic number is determined in the instance of a first X-ray spectrum, and at least the functional dependency of a second X-ray absorption value of density and atomic number is determined in the instance of a second X-ray spectrum. Based on a recording of a first distribution of X-ray absorption values of the object to be examined in the instance of a first X-ray spectrum, and on a recording of at least one second distribution of X-ray absorption values of the object to be examined in the instance of a second X-ray spectrum, the values for density and atomic number are determined by comparing the functional dependency of a first X-ray absorption value of the first distribution of X-ray absorption values with the functional dependency(ies) of the X-ray absorption values, which are assigned to the first X-ray absorption value, of the second and / or other distributions of X-ray absorption values.

A system and a priori method of discovering dependencies between relational database column pairs and application of discoveries to query optimization is provided. For each candidate column pair remaining after simultaneously generating column pairs, pruning pairs not satisfying specified heuristic constraints, and eliminating pairs with trivial instances of correlation, a random sample of data values is collected. A candidate column pair is tested for the existence of a soft functional dependency (FD), and if a dependency is not found, statistically tested for correlation using a robust chi-squared statistic. Column pairs for which either a soft FD or a statistical correlation exists are prioritized for recommendation to a query optimizer, based on any of: strength of dependency, degree of correlation, or adjustment factor; statistics for recommended columns pairs are tracked to improve selectivity estimates. Additionally, a dependency graph representing correlations and dependencies as edges and column pairs as nodes is provided.

A computer-implemented method for detecting a set of inconsistent data records in a database including multiple records, comprises selecting a data quality rule representing a functional dependency for the database, transforming the data quality rule into at least one rule vector with hashed components, selecting a set of attributes of the database, transforming at least one record of the database selected on the basis of the selected attributes into a record vector with hashed components, computing a dot product of the rule and record vectors to generate a measure representing violation of the data quality rule by the record.

A system and method of discovering dependencies between relational database column pairs and application of discoveries to query optimization is provided. For each candidate column pair remaining after simultaneously generating column pairs, pruning pairs not satisfying specified heuristic constraints, and eliminating pairs with trivial instances of correlation, a random sample of data values is collected. A candidate column pair is tested for the existence of a soft functional dependency (FD), and if a dependency is not found, statistically tested for correlation using a robust chi-squared statistic. Column pairs for which either a soft FD or a statistical correlation exists are prioritized for recommendation to a query optimizer, based on any of: strength of dependency, degree of correlation, or adjustment factor; statistics for recommended columns pairs are tracked to improve selectivity estimates. Additionally, a dependency graph representing correlations and dependencies as edges and column pairs as nodes is provided.

The invention discloses a method, device and system for issuing commands to the bus. In a first aspect, a first method of issuing commands onto a bus of a system is provided. The first method includes the steps of: (1) receiving a first functional memory command in the system; (2) receiving a command that causes the system to execute the functional memory commands sequentially; (3) receiving a second functional memory command in the system command; and (4) using a dependency matrix to indicate that the second functional memory command needs to access the same address as the first functional memory command, regardless of whether the second functional memory command actually has an ordering to the first functional memory command dependency. The dependency matrix is ​​adapted to store data indicating whether a functional memory command received by the system has an ordering dependency on one or more functional memory commands previously received by the system. A number of other aspects are also provided.

The invention produces a higher quality image from a rendering system based on a relationship between the output of a rendering system and the parameters used to compute them. Specifically, noise is removed in rendering by estimating the functional dependency between sample features and the random inputs to the system. Mutual information is applied to a local neighborhood of samples in each part of the image. This dependency is then used to reduce the importance of certain scene features in a cross-bilateral filter, which preserves scene detail. The results produced by the invention are computed in a few minutes thereby making it reasonably robust for use in production environments.

Metrology methods and respective software and module are provided, which identify and remove measurement inaccuracy which results from process variation leading to target asymmetries. The methods comprise identifying an inaccuracy contribution of process variation source(s) to a measured scatterometry signal (e.g., overlay) by measuring the signal across a range of measurement parameter(s) (e.g., wavelength, angle) and targets, and extracting a measurement variability over the range which is indicative of the inaccuracy contribution. The method may further assume certain functional dependencies of the resulting inaccuracy on the target asymmetry, estimate relative donations of different process variation sources and apply external calibration to further enhance the measurement accuracy.

Disclosed embodiments of the present invention relate to a system and method for automatic generation of a star schema. The system and method may comprise categorizing a data field into one of a plurality of data field types, one of the data field types being an enumeration type data field. The system and method may further comprise developing dimensions for a table that represents an initial star schema design using the categorization of the data, detecting functional dependencies between the data field and other data fields, and refining the initial star schema design by modifying the table based on detected functional dependencies.

Systems and method are provided for analyzing target, process and metrology configuration sensitivities to a wide range of parameters, according to external requirements or inner development and verification needs. Systems comprise the following elements. An input module is arranged to receive parameters relating to targets, target metrology conditions and production processes, to generate target data. A metrology simulation unit is arranged to simulate metrology measurements of targets from the target data and to generate multiple metrics that quantify the simulated target measurements. A sensitivity analysis module is arranged to derive functional dependencies of the metrics on the parameters and to define required uncertainties of the parameters with respect to the derived functional dependencies. Finally, a target optimization module is arranged to rank targets and target metrology conditions with respect to the simulated target measurements.

In a method for determination of flip angle distributions for various antenna transmission configurations in a magnetic resonance system, magnetic resonance measurements are implemented with the various transmission configurations, with the reception configuration being identical for all implemented magnetic resonance measurements, and all magnetic resonance measurements for the various transmission configurations are implemented with a specific pulse sequence. This pulse sequence is selected such that the total function that describes the dependency of the image signal at a specific location on the flip angle achieved at this location with the radiated radio-frequency field, as well as on further MR-relevant parameters, can be factored into a first sub-function that describes the dependency of the image signal on the achieved flip angle and a second sub-function (Tb) that describes the dependency of the image signal on the further MR-relevant parameters, and such that the functional dependency of the image signal on the achieved flip angle is known. The absolute flip angle distribution is measured for a reference transmission configuration, and the flip angle distributions of the other transmission configurations are then respectively determined on the basis of the absolute flip angle distribution of the reference transmission configuration and on the basis of the ratio of the spatially-dependent image signals of the magnetic resonance measurements of the respective transmission configuration to the corresponding spatially-dependent image signals of the magnetic resonance measurement of the reference transmission configuration.

The invention provides an information flow analytic method based on the searched convert channels of system source codes, which comprises the following steps: functions in the source codes and the statements and the variables in the functions are identified by dint of lexical analyzers and scanning system source codes; the call relations of the functions are determined, statement tree fields are constructed and functional dependence gathers of each function are given according to the functions and the function call statements identified by scanners; function information flow trees are constructed and are lopped with the statements and the variables which can generate information flow and are identified by the scanners as the input for information flow analysis; the function information flow trees are traversed, and the information flow graphs of each function are output; the shared variable visibility between dependence concentration functions and the modifiability information are acquired in functional dependence gathers according to the functional dependence gathers and the information flow graphs, thus generating shared resource matrices; covert channels are searched with the shared resource matrices as the input, and the covert channel sequences in the system are output. By adopting the information flow analytic method, the search work precision of the covert channels is improved.

The invention discloses a method for determining floor water inrush danger level of coal mining working faces in a personalized manner, and belongs to the field of coal safety mining. Factors such as water pressures of floors of the coal mining working faces, the thicknesses of water-insulation layers, destruction phenomena of floors of coal seams due to mine pressures, lithological combinations of rock strata of water-insulation sections and original guide rise and development phenomena of floor confined underground water are comprehensively considered, implicit functional dependency relationships between the influence factors and the water inrush danger level are established, and comprehensive evaluation index systems for evaluating the floor water inrush danger level can be established by means of interpolation analysis on sudden change points of implicit functions. The method has the advantages that the various factors which can affect coal mining floor water inrush thread are comprehensively considered, the functional dependency relationships between the various influence factors and water inrush coefficients are established, accordingly, the difficult problem that only water pressures and the thicknesses of water-insulation layers are considered in the traditional method or functional dependency relationships between influence factors and water inrush coefficients cannot be established is solved, and the novel method can be provided for computing the water inrush coefficients.

In a method for determination of a position of a local coil on a bed in at least one spatial direction within a magnetic resonance scanner, a signal intensity value is initially, extracted from magnetic resonance measurements implemented with the appertaining local coil for acquisition of magnetic resonance images of an examination subject and / or for measurement of further system parameters at each of various positions of the recumbent bed relative to the tomograph. The functional dependency of the extracted signal intensity values on the position of the bed relative to the scanner is then determined. The position of the local coil on the bed is determined on the basis of the determined functional dependency. A corresponding control device for a magnetic resonance system and a computer program product implement the method.

A method for raising the resolving power, specificity, and peak capacity of conventional ion mobility spectrometry is disclosed. Ions are separated in a dynamic electric field comprising an oscillatory field wave and opposing static field, or at least two counter propagating waves with different parameters (amplitude, profile, frequency, or speed). As the functional dependencies of mean drift velocity on the ion mobility in a wave and static field or in unequal waves differ, only single species is equilibrated while others drift in either direction and are mobility-separated. An ion mobility spectrum over a limited range is then acquired by measuring ion drift times through a fixed distance inside the gas-filled enclosure. The resolving power in the vicinity of equilibrium mobility substantially exceeds that for known traveling-wave or drift-tube IMS separations, with spectra over wider ranges obtainable by stitching multiple segments. The approach also enables low-cutoff, high-cutoff, and bandpass ion mobility filters.

The invention relates to a method, a circuit arrangement and an X-ray system, in particular a CT system (1), are disclosed wherein, in order to correct the count rate drift of a detector for ionizing radiation having quantum-counting detector elements (Dn, m) which include a combination of at least two counters (ZS1, ZS2, ZS3) with significantly different energy thresholds (S1, S2, S3), and on the basis of previously determined functional dependencies of count rates on one another and using at least one of the counters (ZS1, ZS2, ZS3) per detector element as the reference, the count rates of the respective other counters with different energy thresholds are corrected.

Systems and methods for automatically building a deadlock free inter-communication network in a multi-core system are described. The example implementations described herein involve automatically generating internal dependency specification of a system component based on dependencies between incoming / input and outgoing / output interface channels of the component. Dependencies between incoming and outgoing interface channels of the component can be determined by blocking one or more outgoing interface channels and evaluating impact of the blocked outgoing channels on the incoming interface channels. Another implementation described herein involves determining inter-component communication dependencies by measuring impact of a deadlock on the blocked incoming interface channels of one or more components to identify whether a dependency cycle is formed by blocked incoming interface channels.

A method of testing a large number of products in which every product to be tested is subjected to at least one test mode that is carried out in a test sequence successively on all products by means of a test operation comprising several successively performed measurement operations, where statistical information on the test operation of products already tested is allowed for and where a test result is allocated for every product tested. In every test mode the order of the measurement operations of a test operation is specified such that the measurement operations are arranged in accordance with their fault frequency per measurement time and the functional dependencies between the measurement operations. Every test operation within the test sequence of a test mode is allocated a measurement mode which has a certain quantity of measurement operations to be performed and which is specified in accordance with the quantity and the products already tested in a test sequence.

In a method for determination of flip angle distributions for various antenna transmission configurations in a magnetic resonance system, magnetic resonance measurements are implemented with the various transmission configurations, with the reception configuration being identical for all implemented magnetic resonance measurements, and all magnetic resonance measurements for the various transmission configurations are implemented with a specific pulse sequence. This pulse sequence is selected such that the total function that describes the dependency of the image signal at a specific location on the flip angle achieved at this location with the radiated radio-frequency field, as well as on further MR-relevant parameters, can be factored into a first sub-function that describes the dependency of the image signal on the achieved flip angle and a second sub-function (Tb) that describes the dependency of the image signal on the further MR-relevant parameters, and such that the functional dependency of the image signal on the achieved flip angle is known. The absolute flip angle distribution is measured for a reference transmission configuration, and the flip angle distributions of the other transmission configurations are then respectively determined on the basis of the absolute flip angle distribution of the reference transmission configuration and on the basis of the ratio of the spatially-dependent image signals of the magnetic resonance measurements of the respective transmission configuration to the corresponding spatially-dependent image signals of the magnetic resonance measurement of the reference transmission configuration.

An automatic operation method of databank based on web service includes carrying out standardization treatment on relation mode of databank to generate out standardized configuration file of databank, setting up databank according to generated configuration file of databank ad generating view of databank then packaging web service being used for operating databank.

Angle-resolved reflectometers and reflectometry methods are provided, which comprise a coherent light source, an optical system arranged to scan a test pattern using a spot of coherent light from the light source to yield realizations of the light distribution in the collected pupil, wherein the spot covers a part of the test pattern and the scanning is carried out optically or mechanically according to a scanning pattern, and a processing unit arranged to generate a composite image of the collected pupil distribution by combining the pupil images. Metrology systems and methods are provided, which reduce diffraction errors by estimating, quantitatively, a functional dependency of measurement parameters on aperture sizes and deriving, from identified diffraction components of the functional dependency which relate to the aperture sizes, correction terms for the measurement parameters with respect to the measurement conditions.

A method, system, and computer program product are provided for performing a multi-modal deformable imaging registration between two different modalities for which a functional dependency is missing or very difficult to identify. The method provides a nonlinear mapping between every pair of points in the two image modalities by calculating the nonlinear mapping for only a limited number of identifiable landmarks within the two modalities and a statistical deformation model of the structure of interest. The method comprises: calculating a mean deformation and a plurality of deformation mode Eigen vectors for a body structure from images from the same imaging mode with different deformation states for a plurality of subjects; performing a registration of a limited number of uniquely identifiable landmark points between images from two different imaging modalities for the same subject to calculate the deformation field for the landmarks from the images; determining weights for each deformation mode Eigen vector using deformation field values at the landmarks with the mean deformation and the deformation mode vectors; and summing the mean deformation field and the linear combination of the weighted deformation mode vectors to determine the deformation field between the different imaging modes for all the points within the images.

The invention relates to an OLAP grouping aggregation method based on a function dependency relationship. The method comprises following steps: a function dependency tree structure among grouping attributes is defined, and the function dependency relationship between the grouping attributes and attributes among tables is defined; the grouping attribute of the GROUP BY clause is detected according to the grouping attribute function dependency tree; a query grouping attribute is divided into two subgroups which are formed by function dependency key attributes and other grouping attributes respectively; mode resolution is performed on a dimension table according to the function dependency relationship, wherein the dimension table adopts surrogate key mechanism and memory column storage mechanism; under the mechanisms of dimension table mode resolution and surrogate key index, grouping aggregation calculation further converts the subgroup attributes into function dependency attributes; after the grouping aggregation calculation is completed, the function dependency attributes are directly mapped to a memory offset address of related dimension table records according to function dependency attribute values to complete the operation of extracting other related grouping attributes. By means of the method, the size of grouping attributes can be reduced, and the Hash grouping calculating efficiency is increased.

The invention relates to a method, an X-ray apparatus and a computer software product, which make it possible to determine the distributions of material density and atomic number in objects to be examined of the human or animal type and in objects to be examined that are used in material and safety engineering. The functional dependency of a first X-ray absorption value of density and atomic number is determined in the instance of a first X-ray spectrum, and at least the functional dependency of a second X-ray absorption value of density and atomic number is determined in the instance of a second X-ray spectrum. Based on a recording of a first distribution of X-ray absorption values of the object to be examined in the instance of a first X-ray spectrum, and on a recording of at least one second distribution of X-ray absorption values of the object to be examined in the instance of a second X-ray spectrum, the values for density and atomic number are determined by comparing the functional dependency of a first X-ray absorption value of the first distribution of X-ray absorption values with the functional dependency(ies) of the X-ray absorption values, which are assigned to the first X-ray absorption value, of the second and / or other distributions of X-ray absorption values.

Method for controlling a device for changing the spreading ring sector of a disc spreader including a controllable metering device, a distributor disc arranged underneath the metering device and provided with thrower blades, and the device for changing the spreading ring sector of the granular material on the ground. Functional dependencies of a setting parameter of the device for changing the spreading ring sector on a throwing parameter are stored in a database of a control unit assigned to the device for adjusting the spreading ring sector, and a set point value of the throwing parameter or of the setting parameter corresponding thereto is input in the control unit. An actual value of the throwing parameter is determined using a sensor, arranged near to the circumference of the distributor disc, and the actual value of the throwing parameter is compared with the set point value thereof in the control unit.

The invention relates to a cloud service API adaptation method based on execution path similarity. The problem that multi-cloud deployment needs to face diversity and complexity of different cloud computing platforms is solved. According to the method, the function dependency graph is constructed by using the execution track with the function as the unit, the function dependency graph is analyzedthrough methods such as formula calculation and the maximum public subgraph, the similarity between codes of different cloud service providers is obtained, and therefore the application range of a management mode is defined. Meanwhile, an execution track graph is constructed by using the execution track taking the module as a unit, and a standardized execution track is analyzed based on a rule, sothat a multi-cloud management mode is constructed.

The present invention provides an optimization method of an industrial hydrocracking reaction condition. The method comprises the steps: 1) collecting production data of the industrial hydrocracking reaction of an industrial hydrocracking device in different operation conditions; 2) taking the production data as a target function to be optimized of a hydrocracking process, and taking operation conditions as related optimization variables; 3) building the implicit numerical function relation or the dominant function analysis relation of the target function, the constraint function and the calculation parameters; and 4) employing a target optimization algorithm to perform target optimization. The optimization method of an industrial hydrocracking reaction condition establishes an accurate high-dimensional implicit function dependency relation between refined oil product performance indexes and operation technology conditions, and is able to associate the refined oil product performance indexes with the operation technology conditions through adoption of a numerical method. The optimization method of the industrial hydrocracking reaction condition is not restricted by the convexity of a complex target function to be optimized and the differentiability, and is more adapted to the high non-linear characteristic of the hydrocracking reaction.