34 results about "Recursive partitioning" patented technology

A method is provided for deriving optimized operating parameter settings for industrial furnaces of different designs as commonly used in power generation that will achieve robust and desirable operations (for example, low NOx and low CO emissions while maintaining specific furnace exit gas temperatures). The method includes the application of recursive partitioning algorithms to historical process data to identify critical combinations of ranges of operational parameter (combinations of settings) that will result in robust (low-variability) desirable (optimized) boiler performance, based on empirical evidence in the historical data. The method may include the application of various algorithms for recursive partitioning of data, as well as the consecutive application of recursive partitioning methods to prediction residuals of previous models (a methodology also known as boosting), as well as the application of other prediction algorithms that rely on the partitioning of data (support vector machines, naive Bayes classifiers, k-nearest neighbor methods).

Placement or floorplanning of an integrated circuit is performed by constructing legal layouts at every level of a hierarchy of subsets of modules representing the integrated circuit, by scalably incorporating legalization into each level of the hierarchy, so that satisfiability of constraints is explicitly enforced at every level, in order to eliminate backtracking and post-hoc legalization.

The invention discloses an image encoding method and an image encoding device. The method comprises the following steps: dividing domain blocks according to a value block scale range; performing isomorphic transformation on a matrix composed of 4 low frequency coefficients obtained by performing wavelet transformation on the domain blocks; performing recursive partitioning on value blocks until scale of the value blocks is less than the maximum scale; performing wavelet transformation on the value blocks to obtain 4 low frequency coefficients, calculating a value block direction K1 and a domain block direction K2, calculating a luminance factor and a shift factor and error thereof if the K1 is identical with the K2, and judging if the error is less than 5; if yes, writing position information of the value block and the domain blocks, transformation information and value block scale information into a code stream file, or performing quadtree partitioning on the value blocks; and writingending information into the code stream file when all the value blocks find corresponding domain blocks. The invention accelerates encoding speed and effectively improves compression ratio and decoded image quality, thus realizing effective image compression.

The invention provides an extensible object notation method and device for use in a video coder/decoder. In a coding process, the object property of a coding unit is judged according to the partition structure and object information of the coding unit in order to write the object property into the bit stream of an output video; in a decoding process, the object property is decoded to obtain object information comprising shapes and locations. An extensible object notation device for use in the video coder/decoder is provided by using the method. For a maximum coding unit, recursive partitioning is performed according to a mode decision. For a coding unit of which partitioning is ended, a judgment on whether the coding unit belongs to an object is made. If the coding unit does not belong to the object, an identity coding module is entered to code an object index identity for the coding unit. If the coding unit belongs to the object, an object notation accuracy decision module is entered.

The invention relates to a hybrid mesh partition method in the field of electronic technologies, in particular to the hybrid mesh partition method with the design of integrity of a system-level packaging power supply. The hybrid mesh partition method comprises the following steps: (1) decomposing an irregular power supply/ground plane into a series of convex polygons by utilizing convex partition treatment; (2) obtaining an optimal rectangular mesh based on the recursive partitioning technology of the rectangular mesh, setting auxiliary ports on sides of the rectangular mesh, and establishing the transfer impedance relationship among the ports; (3) adopting a triangular mesh to fill the remaining structure, and carrying out modeling of an equivalent circuit for the triangular mesh; (4) establishing the electrical relationship among the ports at an interface of the rectangular mesh and the triangular mesh; and (5) solving simultaneous overall equations. The hybrid mesh partition method has the advantages of a wide range of applications, few internal nodes, high analysis precision and efficiency and the like.

A method and computer workstation are disclosed which determine the location in the ground space of selected point in a digital image of the earth obtained by an airborne camera. The image is rectangular and has four corners and corresponds to an image space. The image is associated with data indicating the geo-location coordinates for the points in the ground space corresponding to the four corners of the image, e.g., an image formatted in accordance with the NITF standard. The method includes the steps of: (a) performing independently and in parallel a recursive partitioning of the image space and the ground space into successively smaller quadrants until a pixel coordinate in the image assigned to the selected point is within a predetermined limit (Δ) of the center of a final recursively partitioned quadrant in the image space. The method further includes a step of (b) calculating a geo-location of the point in the ground space corresponding to the selected point in the image space from the final recursively partitioned quadrant in the ground space corresponding to the final recursively partitioned quadrant in the image space. The methods are particularly useful for geo-location from oblique reconnaissance imagery.

A method for screening compounds for biological activity is disclosed. A test library of compounds is selected. Then, a first analytical model is formed using a first recursive partitioning process. The first recursive partitioning process is performed on at least some of the compounds in the test library of compounds and uses a first descriptor set. Subsequent analytical models are formed using subsequent recursive partitioning processes using the digital computer and use multiple descriptor sets. A consensus compound set is determined using the first analytical model and one or more of the subsequent analytical models.

One embodiment of the invention is a recursive partitioning method that places circuit elements in an IC layout. This method initially defines a number of partitioning lines that divide an IC region into several sub-regions (also called slots). For a net in the region, the method then identifies the set of sub-regions (i.e., the set of slots) that contain the circuit elements (e.g., the pins of circuit modules) of that net. The set of sub-regions for the net represents the net's configuration with respect to the defined partitioning lines. Next, the placement method identifies attribute or attributes of a connection graph that models the net's configuration with respect to the partitioning lines. The connection graph for each net provides a topology of interconnect lines that connect the slots that contain the net's circuit elements. According to some embodiments of the invention, the connection graph for each net can have edges that are completely or partially diagonal.

The invention provides a self-operated measuring unit for reaction of the pupil aperture to light based on digital image processing. The self-operated measuring unit consists of a uniform light stimulator, an infrared image acquisition module and pupil measuring software, wherein the uniform light stimulator is used for controlling hardware and a light source array to establish a photostimulation environment conforming to an International Society for Clinical Electrophysiological of vision (ISCEV) standard; the infrared image acquisition module is used for dynamically acquiring images and transmitting the images into a memory; the pupil measuring software is used for performing filtering processing and equilibrium processing on the images, performing recursive partitioning on the images according to a gray average and a variation proportion, extracting feature information including area, perimeter and circularity for judging whether the images are pupils of human eyes, and performing curve fitting, identification, and position and radius parameter extraction on verified pupils. According to the measuring unit provided by the invention, three kinds of stimulation light in red, white and blue conforming to the required strength of reaction of pupil to light can be generated, the size change of the reaction of pupil aperture to light is measured in real time, the shrinkage change rate of beam-focusing stimulation is calculated, and stability and accuracy are realized.

The invention discloses a hypertension medication recommendation model based on recursive partitioning calculation and a construction method thereof. The method comprises the steps: obtaining a hypertension data set through ICD coding, and analyzing and processing the data set to be in a standardized text medical record format; formatting a text medical record into a classification variable containing hypertension medication characteristics, and defining a model framework; dividing the data set into a test sample set and a verification sample set through an age stratified sampling method; based on the test sample set, calculating the fitting degree of the model and judging the complexity of medication nodes by using a recursive partitioning algorithm; establishing a model parameter pool, and setting parameter composition; and solving optimal model parameters based on the verification sample set to realize construction and optimization of the hypertension medication recommendation model. By means of big data analysis, recognition methods of different medication schemes in individualized application of hypertension patients are analyzed, and rapid selection of a single medication scheme or a combined medication scheme is achieved according to treatment classification characteristics of the patients.

The invention provides a computer automated measurement method of solid oxide fuel cell (SOFC) electroconductance, belonging to the technical field of chemical energy materal performance test, which is characterized by realizing parameter measurement selective setup of a programmable parameter table and dividing parameters in the programmable parameter table into two categories of measurement parameters and selective measurement parameters, namely whether the selective measurement parameters need to be measured can be selected; realizing multiple selection methods of measurement parameter download function for storing data in a database and field equipment; and realizing random-length seamless continual temperature programming process in a temperature increasing stage and adopting a method for downloading the temperature increasing stage in a recursive partitioning manner to solve the problem of extending the length of the temperature increasing stage limited by field temperature controller to cause the temperature increasing process to be in seamless and continual operation. The realization of the method changes the traditional manual measurement method, extends and enhances the self functions of the temperature controller, and leads the measurement system to have flexible operation efficiency, higher cost performance and high precision and efficiency of automatic measurement of the SOFC electroconductance.

The invention discloses a QTBT fast judgment method and system based on a KB filter. The system comprises an obtaining module, a selection module, a search module and a judgment module. The method comprises the following steps: carrying out filtering processing on a video frame image through the KB filter to obtain a filtered image; selecting a corresponding high frequency point threshold value; searching high frequency point maximum value of an image region; judging whether the searched high frequency point maximum value is smaller than the selected high frequency point threshold value; if so, jumping out of the current coding unit recursive partitioning program; or otherwise, carrying out recursive partitioning continuously on a current coding unit based on a QTBT algorithm. Through the method and system, whether the CU is subjected to recursive partitioning continuously can be pre-judged based on the image features, thereby greatly reducing video encoding time; and the QTBT fast judgment method and system based on the KB filter can be widely applied to the QTBT algorithm video coding field.

The invention discloses an HEVC intraframe coding method based on a support vector radix, which comprises the following steps of: 1, judging whether a current coded frame is a first frame, if not, directly jumping to the step 4, or directly carrying out quadtree recursive partitioning of an HEVC standard; 2, carrying out statistics on characteristic values under different coding depths and forming training samples; 3, according to the training samples obtained by statistics, training a support vector radix classifier; 4, carrying out extraction of a characteristic value on a current coding block, classifying the characteristic value by the support vector radix classifier obtained by the training samples, and determining a coding depth; 5, carrying out normal coding under the coding depth; and 6, if coding on a video sequence is completely finished, ending the operation, or jumping to the step 1 again. According to the HEVC intraframe coding method disclosed by the invention, on the basis of keeping reducing calculation complexity, hardware implementation cost is not additionally increased. Additional cost cannot be increased for manufacturing of hardware equipment, and meanwhile, power consumption also can be saved.