286 results about "Similarity criterion" patented technology

Techniques are provided for searching on three dimensional (3D) objects across large, distributed repositories of 3D models. 3D shapes are created for input to a search system; optionally user-defined similarity criterion is used, and search results are interactively navigated and feedback received for modifying the accuracy of the search results. Search input can also be given by picking 3D models from a cluster map or by providing the orthographic views for the 3D model. Feedback can be given by a searcher as to which models are similar and which are not. Various techniques adjust the search results according to the feedback given by the searcher and present the new search results to the searcher.

Techniques are provided for searching on three dimensional (3D) objects across large, distributed repositories of 3D models. 3D shapes are created for input to a search system; optionally user-defined similarity criterion is used, and search results are interactively navigated and feedback received for modifying the accuracy of the search results. Search input can also be given by picking 3D models from a cluster map or by providing the orthographic views for the 3D model. Feedback can be given by a searcher as to which models are similar and which are not. Various techniques adjust the search results according to the feedback given by the searcher and present the new search results to the searcher.

A static heat transfer model is derived from a system of dynamic equations by integrating the dynamic equations over different time periods. That static heat transfer model links periodic (e.g., monthly) energy usage with cooling and heating degree hours, humidifying and dehumidifying hours. Its coefficients of measuring correlations correspond to the thermal parameters of buildings. Temporal data from a building may be used to estimate the overall heat transfer parameters. A clustering scheme may be developed to decompose all the buildings into different clusters based on one or more similarity criteria. The overall heat transfer parameters are separated into values for the wall, roof and window using multiple buildings' data in the same cluster or group.

Method and apparatus for encoding and decoding a bit stream comprising a representation of a sequence of n-dimensional data structures or matrices, in which n is typically 2. A part of the data of one data structure of the sequence can be mappable within predefined similarity criteria to a part of the data of a another data structure of the sequence. The similarity criteria may include, for instance, a spatial or temporal shift of the data within an image of a video signal such as is used in motion estimation and / or compensation of moving pictures, e.g., video images as well as coders and encoders for coding such a bitstream, e.g., a video signal for use in motion compensation and / or estimation. The data structures are typically video frames and a part of the data structure may be a block of data within a frame. The shift may be any suitable shift such as a linear translation at any suitable angle, a rotation of the data or change of size such as zooming between a part of the data in one data structure and a part of the data in another data structure of the sequence. The data structures are typically sequential frames of a video information stream. Digital filtering may be applied to a reference or other frame of data to generate one or more subbands of a set of subbands of an overcomplete representation of the frame by calculations at single rate. The digital filtering may be implemented in a separate filter module or may be implemented in software running, for example, on a microprocessor.

This invention consists of a process for the analysis and selection of financial investments based on a comparative analysis of performance and diversification. The method permits the manipulation of extremely large data sets in a manner that is simple to understand and convenient to use. This invention permits historical performance data for investments to be analyzed in respect of every possible investment period using any pre-existing or personally defined quantitative measurement algorithm. The user can apply his or her personal weightings to the various performance measurements based on a combination of attribute and time period to construct a customized scoring process, based on which a comparative ranking of the investments can be created. This invention also permits a complete universe of investments to be segmented into peer groups based on one of a number of similarity / dissimilarity criteria from which the user may choose.

A method and system for transit characteristic prediction. In one embodiment, a method may include determining respective transit latencies from a source location to a number of destination locations, and grouping the destination locations according to a similarity criterion into a number of subsets corresponding to respective geographical regions, where transit characteristics of locations grouped into a geographical region may each satisfy the similarity criterion. The method may further include determining a respective distribution associated with each of the geographical regions, where a given respective distribution correlates a given transit characteristic from the source location to a given geographical region with a respective surety factor, where the respective surety factor includes a cumulative probability that the given transit characteristic will be achieved. The method may also include dynamically updating the respective transit characteristic, the grouping of destination locations into geographical regions and the respective distributions dependent upon collecting empirical transit data.

A wireless power transfer system includes a power receiver (105) and a power transmitter (101) generating a wireless inductive power transfer signal for powering the power receiver (105) during a power transfer phase. An apparatus, often the power transmitter (101) comprises a first communication unit (305) communicating with a second communication unit of an entity using an electromagnetic communication signal. The entity may typically be the power receiver (105). The apparatus comprises a reference processor (307) for measuring and storing a reference value of a characteristic of the communication signal and a measurement unit (309) which repeatedly during the power transfer phase determines a measured value of the characteristic. A comparator (311) compares the measured values to the reference value and an initiator (313) triggers an entity detection process if the comparison indicates that a measured value and the reference value do not meet a similarity criterion. The entity detection process detect a presence of another entity.

The related motion vector prediction technique for audio and video coding / decoding comprises: selecting surrounded coding block A, B, C and D for the target block E; using the motion vectors of three candidate blocks from four as the candidate of prediction vector, calculating the prediction value for coding block E by one of disclosed method (most similarity criterion or most not-similarity criterion). This invention improves compression efficiency, and applies two criterions fit to different sequences.

An executing electronic arrangement for producing foodstuff recommendations and facilitating shopping in grocery stores, includes semantic context management entity configured to maintain semantic context-defining user information relative to a plurality of users, which indicates user preferences relative to groceries based on obtained explicit or implicit preference information, a base item recommendation entity configured to determine, for a first user, a plurality of more generic grocery recommendations based on the semantic context of the first user and the semantic contexts of a number of other users considered as neighbors to the first user according to predetermined similarity criteria, and a product recommendation entity configured to derive, for the first user, a shopping list incorporating a plurality of recommended products relative to a predetermined store offering such products, representing more specific instances of the determined more generic grocery recommendations and being derived utilizing knowledge of the store's product range or current stock.

Systems can identify visible surfaces for pixels in an image (portion) to be rendered. A sampling pattern of ray directions is applied to the pixels, so that the sampling pattern of ray directions repeats, and with respect to any pixel, the same ray direction can be found in the same relative position, with respect to that pixel, as for other pixels. Rays are emitted from visible surfaces in the respective ray direction supplied from the sampling pattern. Ray intersections can cause shaders to execute and contribute results to a sample buffer. With respect to shading of a given pixel, ray results from a selected subset of the pixels are used; the subset is selected by identifying a set of pixels, collectively from which rays were traced for the ray directions in the pattern, and requiring that surfaces from which rays were traced for those pixels satisfy a similarity criteria.

The invention discloses a method for establishing a dynamic and static aero-engine onboard model and belongs to the technical field of aero-engine control. Firstly, sample data compression is conducted through a similarity criterion and a taylor expansion principle so that the sample data size can be greatly reduced and time can be greatly shortened; then, a dynamic onboard model based on a sparse autocoder and a static onboard model based on a BP neural network are trained through dynamic data and static data in compressed sample data respectively; finally, corresponding quasi-steady-state judgment logic is set, the sparse autocoder dynamic model is used in the dynamic process, and the BP network static model is used in the static process. Compared with the prior art, the established aero-engine onboard model has higher precision under the dynamic condition and the static condition and is better in instantaneity and lower in requirement for data storage space.

An earth-rock dam break centrifugal model test analysis method is characterized by comprising the following steps that (1) an earth-rock dam break test special model box is arranged; (2) the working principle and the stress similarity criterion of a centrifugal machine are used, an earth-rock dam prototype and a 1 / N-contraction-scale centrifugal test model are obtained, under the Ng centrifugal acceleration condition, the linear size ratio of the model and the prototype is 1 / N, and the earthing stress of the model and the prototype is the same; (3) according to the seepage similarity criterion, the obtained permeability coefficient of centrifugal model earth is N times of the permeability coefficient of prototype earth; (4) according to the shearing strength similarity criterion, the particle diameter of model cohesiveless earth-rock materials is reduced by N times; and (5) according to the water flow similarity criterion, the similarity criterion of commonly-used physical quantity in an earth-rock dam break centrifugal model test is obtained. The method is not limited or restricted by fields, a large amount of earth and a large number of water resources are of no need during testing, and the method has the advantages of being low in cost and short in time.

The invention discloses a method for modeling a predictable physical model for fractured anisotropic oil reservoir water flooding development, and the method comprises the following steps: (a) establishing similarity criteria for simulating the fractured oil reservoir development according to characteristics of the process of fractured oil reservoir water flooding oil development and by utilizing theories of seepage mechanics and similarity analysis, wherein the similarity criteria comprise similarities in shape and space, shaft geometry, physical properties of rock, oil-water viscosity, gravity-pressure, matrix and fracture movable oil amount ratio, oil content distribution in matrix, matrix imbibition and fracture displacement characteristic time, imbibition intensity distribution and time process; (b) realizing the similarity criteria and a design method of model parameters; and (c) modeling an oil reservoir macroscopic physical model which meets the multiple similarities so as to comprehensively simulate and predict seepage characteristics and the development process of real fractured oil reservoir. A predictable physical simulation similarity criterion system for the fractured anisotropic oil reservoir is established, has comprehensive functions and is easy to realize.

A method for labeling images that have a visual appearance digitizes the images in order to create image data. The method calculates plurality of features from a subset of said image data and organizes the images unsupervised in an organization process. The organizing is based on the features and the similarity criterion. After the set of images is retrieved utilizing the organization of the stored images, a label is assigned to the retrieved image or to its part. As well the labels are verified and training material is created for a supervised classifier.

The invention discloses a servo system position IP controller model-free self-correcting method based on fractional order. The method includes: setting a reference model, exciting a system to obtain an offline database, initiating the related parameters of the system, updating the database according to input and output data newly collected at a current moment, selecting similar data queues according to a similarity criterion function, selecting the order of a fractional order controller, and using particle swarm optimization algorithm to perform self-correcting on fractional-order IP controller parameters. The method has the advantages that the fractional order feature of the system is considered, performance such as overshoot, rising time, error convergence speed and controller parameter variation is appraised comprehensively, the instantaneity of the system is guaranteed by using the similarity criterion function, the method is unaffected by unmodeled dynamics, and the robustness, disturbance rejection ability and control precision of the system are increased.

A method and apparatus for automatically estimating a correction to be made to an image deformed with respect to a sequence of images. The method includes detecting of information pixels in the images; calculation of a region of interest located in a binary mapping image made from the images; for each image, search in the image, for the position of a mobile region that maximizes a similarity criterion to the region; and the estimated correction to be made to the image is compared with each image being the affine transformation of the mobile region moving from its found position at which similarity criterion is maximized to the region. The correction is only applied if the balance is equal to the improvement to the similarity criterion in the region of interest and the deterioration of the similarity criterion outside the region of interest is positive.

A design method of an aeroelastic model for a long-span transmission tower-line system is disclosed. On the basis of boundary layer wind tunnel test data of a rigid model, a finite element model is utilized to calculate that relaxed Froude number similarity criterion of transmission towers, the influence of the elastic stiffness of a transmission line and two kinds of variable proportion transmission line models upon wind-induced response is changed, an aeroelastic model with long span is designed. The influence of material nonlinearity and gradient wind height of concrete filled steel tube onwind-induced response is further analyzed by the finite element model. The method has the advantages that the aeroelastic model of long span can be reasonably designed by increasing the elastic stiffness of the transmission line and adopting an accurate line length similarity ratio; consideration of the material nonlinearity of concrete-filled steel tubes has little effect on wind-induced response at design wind speed, and the wind-induced response decreases when considering the gradient wind height.

Methods and systems for tissue classification of a tissue sample are provided. The methods and systems transform the tissue image data to a biomarker enhanced tissue network (BETN) such that an individual cell or a sub-cellular structure in the tissue image data corresponds to a node in the BETN, define a feature vector based on a feature set representative of a tissue type of interest, cluster nodes of the BETN based on a similarity criterion of one or features of the feature vector, and classify the nodes in the tissue image data based on the grouping of the nodes of the BETN.

The present invention relates to a method for generating a cyclic video sequence (SC), characterized in that it comprises implementing equipment (10) by data-processing means (11) by steps of:(a) Reception from video-acquisition means (2) of a video sequence (S);(b) Determination of a first singular point (P1) of the video sequence (S) in a first interval (I1) of said sequence (S) and of a second singular point (P2) of the video sequence (S) in a second interval (I2) of said sequence (S), said first and second singular points (P1, P2) having a maximum similarity according to a given similarity criterion.(c) Generation of a connecting sequence (SR) between the image of the video sequence (S) corresponding to the second singular point (P2) and the image of the video sequence (S) corresponding to the first singular point (P1) by morphing;(d) Construction of said cyclic video sequence (SC) by concatenation of a fragment (S′) of said video sequence (S) extending from the first singular point (P1) to the second singular point (P2), and of said connecting sequence (SR).

A method, apparatus, and memory storing instruction that generate one or more playlists. In one aspect, a playlist is generated by calculating coincidences distances between pairs of items in a group and generating a playlist of plural of the items in the group responsive to the coincidence distances. In another aspect, two related playlists are generated, for example by using a same coincidence criteria for the playlists or by using mutual similarity criteria between the playlists.

A user interface provides for contextual navigation in locating desired content based on similarity / dissimilarity criteria. Each item that is identified in a device is provided with at least one multi-dimensional descriptor. A content of each item can be stored remotely from the device. A search criteria is selected that relates to the descriptor and a selected active item. A search is conducted to identify all other items identified in the device that have a relationship with the search criteria. The results are presented to the user and can be ranked according to a selected relationship order.

A system receives, based on processing of an inspected frame of an inspected image generated by collecting signals indicative of a pattern on an article, at least one candidate defect location in the inspected frame. The system defines a candidate patch within the inspected frame. The candidate patch is associated with the candidate defect location. The system identifies at least one similar patch in the inspected frame using a predefined similarity criterion and determines whether a defect exists at the candidate defect location based on a comparison of at least a portion of the candidate patch with at least a corresponding portion of the at least one similar patch.

The invention relates to a stability evaluation method for a marine natural gas hydrate pilot production reservoir and belongs to the field of natural gas hydrate production. The method comprises the steps that geological survey is performed on the marine natural gas hydrate pilot production reservoir, indoor physical simulation is performed according to similarity criteria, and a stability evaluation model of the marine natural gas hydrate pilot production reservoir is constructed to pre-evaluate the stability of the marine natural gas hydrate pilot production reservoir in the pilot production process. Through the method, mechanical responses, dynamic evolution and unstable critical conditions of the natural gas hydrate decomposition reservoir along with natural gas hydrate decomposition can be accurately described, accurate pre-evaluation is provided for the pilot production process of marine natural gas hydrate, and relevant disasters in a pilot production project of the marine natural gas hydrate can be avoided.

The invention relates to a method intended to automatically create a description of a video sequence—i.e. its table of contents—by analyzing the video sequence. First is a temporal segmentation of the video shots of the sequence, using camera motion parameters. This segmentation uses a similarity criterion involving, for sub-entities of each shot, the level of homogeneity of these sub-entities on the motion parameters of the camera used to acquire the original images and generate the bitstream constituting the processed sequence.

A method in one example implementation includes obtaining a plurality of host file inventories corresponding respectively to a plurality of hosts, calculating input data using the plurality of host file inventories, and then providing the input data to a clustering procedure to group the plurality of hosts into one or more clusters of hosts. The method further includes each cluster of hosts being grouped using predetermined similarity criteria. In more specific embodiments, each of the host file inventories includes a set of one or more file identifiers with each file identifier representing a different executable software file on a corresponding one of the plurality of hosts. In other more specific embodiments, calculating the input data includes transforming the host file inventories into a matrix of keyword vectors in Euclidean space. In further embodiments, calculating the input data includes transforming the host file inventories into a similarity matrix.